Landsat Missions

Glossary and Acronyms

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Glossary

 

Glossary: Includes terms related to the Landsat Project.

 

Acquisition - (1) An image captured by a satellite sensor. (2) The process of searching for and locking onto a received signal.

Acquisition Date - The date the image was acquired. Format: YYYY/MM/DD

Acquisition of Signal - The time a site receives a signal from a spacecraft.

Algorithm - In the context of remote sensing, algorithms generally specify how to determine higher-level data products from lower-level source data. For example, algorithms prescribe how atmospheric temperature and moisture profiles are determined from a set of radiation observations originally sensed by satellite sounding instruments.

Altitude - The angle, in degrees, above the level horizon where an object in the sky appears (the height in space).

Analog - A form of transmitting information characterized by continuously variable quantities, as opposed to digital transmission, which is characterized by discrete bits of information in numerical steps. An analog signal is used to transmit audio (such as voice, radio, stereo, and control tones) and is responsive to changes in light, sound, heat and pressure.

Analog-to-Digital Conversion - The process of converting analog signals to a digital representation.

Anomoly - (1) A deviation from the norm. (2) The angular distance between the position of a planet and its last perihelion (point nearest to the sun), or between that of a satellite and its last perigee (point nearest to the center of the earth).

Antenna - A device for transmitting and receiving radio waves.

Aperture - The diameter of an opening; the diameter of the primary lens or mirror of a telescope. A cross-sectional area of the antenna that is exposed to the satellite signal.

Ascending Node (AN) - Direction a satellite is traveling relative to the Equator. An ascending node implies a northbound Equatorial crossing.

Asychronous - Not synchronized.

Attitude - The angular orientation of a remote sensing system with respect to a geographical reference system. The orientation of the sensor along with information about the accuracy and precision with which this orientation is known. This data is required to perform proper calibration of instrument data. The attitude is usually stored in Euler angle or quaternion form and may be 1) calculated by the on-board computer and telemetered to the ground or 2) calculated by ground processing facilities using a variety of attitude sensor data.

Band (channel) - A slice of wavelengths from the electromagnetic spectrum. Landsat ETM+ has eight bands that collect radiation from different parts of the electromagnetic spectrum. Of the eight bands, three bands are visible light, one band is panchromatic, three bands are infrared, and one band is thermal infrared.

Band Gain - The band gain condition detected at the start of a WRS scene. H indicates band acquired in high gain mode. L indicates band acquired in low gain mode.

Bit - A single digital unit of information.

Bit Error Rate - The fraction of a sequence of message bits that are in error (a bit error rate of 10-6 means that there is an average of one error per million bits).

Browse data - A reduced data volume representation of an image scene that can be viewed to determine general ground area coverage and cloud coverage. Browse data typically consist of three spectral bands.

Calibration - The act or process of comparing certain specific measurements in an instrument with a standard.

Calibration Data - In remote sensing, measurements pertaining to the spectral or geometric characteristics of a sensor or radiation source. Calibration data are obtained by using a fixed energy source such as a calibration lamp, a temperature plate, or a geometric test pattern.

Calibration Parameter File (CPF) - The Calibration Parameter File (CPF) supplies the radiometric and geometric correction parameters required during Level 1 processing to create superior products of uniform consistency across the Landsat 7 system. They fall into one of three major categories: geometric parameters, radiometric parameters, or artifact removal parameters. Each CPF is stamped with applicability dates; then sent to the LP DAAC for storage and eventual bundling with outbound Level 0 products. The Image Assessment System (IAS) updates and distributes the CPF at least every 90 days.

Channel - A one-way communications link.

Coherent Noise - A spurious, periodic pattern of noise within an image, generally of electronic origin.

Data Continuity - A NASA requirement to ensure that Landsat 7 data are compatible to those obtained by earlier Landsat satellites.

Data set - A logically meaningful grouping or collection of similar or related data.

Descending node - Direction a satellite is traveling relative to the Equator. A descending node implies a southbound Equatorial crossing.

Digital - A means for encoding information in a communications signal by using bits (binary digits). Conversion of information into bits of data for transmission through wire, fiber optic cable, satellite, or over air techniques. Method allows simultaneous transmission of voice, data or video.

Downlink - A communications channel for receiving transmissions from a spacecraft.

Dynamic Range - The range between the maximum and minimum amount of input radiant energy that an instrument can measure.

Electromagnetic - Relating to the interplay between electric and magnetic fields.

Electromagnetic radiation - Energy transfer in the form of electromagnetic waves or particles that propagate through space at the speed of light.

Electromagnetic spectrum - The entire range of radiant energies or wave frequencies from the longest to the shortest wavelengths--the categorization of solar radiation. Satellite sensors collect this energy, but what the detectors capture is only a small portion of the entire electromagnetic spectrum. The spectrum is usually divided into seven sections: radio, microwave, infrared, visible, ultraviolet, x-ray, and gamma-ray radiation.

Enhanced Thematic Mapper Plus (ETM+) - The sensor aboard Landsat 7 that picks up solar radiation reflected by or emitted from the Earth.

Ephemeris - A table of satellite orbital locations for specific time intervals. The ephemeris data help to characterize the conditions under which remotely sensed data are collected and are commonly used to correct the sensor data before analysis.

Equator - An imaginary circle around a body that is everywhere equidistant from the poles, defining the boundary between the northern and southern hemispheres.

EROS Center - Earth Resources Observation and Science Center is a national archive, production, distribution, and research facility for remotely sensed data and other geographic information.

ETM+ Format 1 - The ETM+ Format 1 major frames contain all data (e.g., imaging and calibration) from and associated with Bands 1?6. The MSCD and PCD data are duplicated in both ETM+ formats.

ETM+ Format 2 - The ETM+ Format 2 major frames contain all data (e.g., imaging and calibration) from and associated with Bands 6?8. The MSCD and PCD data are duplicated in both ETM+ formats.

Full WRS Scene - A full WRS scene with overlap is 375 ETM+ scans. A nominal scene without overlap is 335 ETM+ scans. Due to a movement of the bumpers, which resulted in a larger turn-around interval and an increase in the nominal number of minor frames per major frame (from 7,423 to 7,473), the nominal size of a scene without overlap may decrease. Further bumper wear changes may decrease the number of scans without overlap. The number of overlap scans will increase to compensate for the decrease in the non-overlap scene size.

Gain - (1) A general term used to denote an increase in signal power in transmission from one point to another; usually expressed in decibels. (2) An increase or amplification. (3) A measure of amplification expressed in dB.

Gaussian Noise - Statistically random radio noise characterized by a wide frequency spectrum that is continuous and uniform over a specified frequency band.

Geostationary orbit - "Describes an orbit in which a satellite is always in the same position (appears stationary) with respect to the rotating Earth. The satellite travels around the Earth in the same direction, at an altitude of approximately 35,790 km (22,240 statute miles) because that produces an orbital period equal to the period of rotation of the Earth (actually 23 hours, 56 minutes, 04.09 seconds). A worldwide network of operational geostationary meteorological satellites provides visible and infrared images of Earth's surface and atmosphere."

Gimbal - A device with two mutually perpendicular and intersecting axes of rotation, thus giving free angular movement in two directions, on which an object may be mounted.

Greenwich Mean Time (GMT) - The mean solar time of the meridian of Greenwich, England, used as the prime basis of standard time throughout the world.

High Gain/Low Gain Antenna - A high gain antenna is highly focused, whereas a low gain antenna receives or transmits over a wide angle.
Infrared radiation - Electromagnetic radiation with wavelengths between about 0.7 to 1000 micrometers. Infrared waves are not visible to the human eye. Longer infrared waves are thermal infrared waves.

Interval - The time duration between the start and end of an imaging operation (land observation) by the ETM+ instrument on board the Landsat 7 spacecraft. The raw wideband data collected during an interval consists of a contiguous set of WRS scenes.

No J entries
No K entries
Landsat - Land Remote Sensing Satellite Program managed by the U.S. Geological Survey. The Landsat Satellite series began in 1972 to gather information about land surface features of the planet. Landsat 5, launched in 1984, and Landsat 7, launched in 1999, are still operational.

Data from the satellites have been used for monitoring land cover conditions, geological / mineralogical exploration, urban growth, and cartography. Global coverage is available and data sets are provided by the USGS at the cost of reproduction.

Landsat 7 Contact Period - The time duration between the start and end of raw wideband data transmissions from the Landsat 7 spacecraft to a ground station [e.g., the Landsat 7 Ground Station (LGS).

Latitude - The angular distance North or South from the Earth's equator measured in degrees with the equator at 0o and the poles 90o N and 90o S.

Level 0R Files - The generic term used to denote the grouping of band, MSCD, PCD, and calibration data files for a single subinterval.

Level 0R product - A US data product in which the data has been spatially reformatted but the data values remain unchanged. No radiometric or geometric corrections have been performed on the data. The reformatting is fully reversible. The data is band sequential. Attached to the image data are radiometric calibration image data, payload correction data, quality data, and metadata.

Level 0R Quality and Accounting Data - The data quality and accounting information collected by the Landsat 7 Processing System (LPS), on a subinterval basis, from processing of the ETM+ major frames constructed from the wideband Virtual Channel Data Units (VCDUs) received during a Landsat 7 contact period.

Longitude - The angular distance East or West between the meridian of a particular place on Earth and that of Greenwich, England, expressed in degrees or time.

Loss of Signal - The inability to receive a satellite signal because the satellite's orbital path has taken it below the antenna's horizon.

Lower Scene Corners - The corners associated with the leading edge (last scan) of a scene. For descending path scenes, the lower left corner corresponds to the southwest corner of a scene and the lower right corner corresponds to the southeast corner of a scene. For ascending path scenes, the lower left corner corresponds to the northeast corner of a scene and the lower right corner corresponds to the northwest corner of a scene. These mappings hold for the band file geolocation fields and the metadata file.

LPS (output) Files - The generic term used to denote the grouping of Level 0R, browse, and metadata files for a single subinterval. L0R files contain image data, cal data, PCD, and MSCD. Multi-band browse scenes file and metadata file contained in the LPS Output File Set.

Mercator - Of, relating to, or drawn on the Mercator projection (a conformal map projection with the meridians drawn parallel to each other and the parallels of latitude drawn as straight lines whose distance from each other increases with their distance from the equator).

Metadata - A set of descriptive information about the scene data contained in the archive. The information is sufficient for a user, during the process of scene query and selection, to determine at a minimum geographic coverage, date of collection sensor gain mode, time of acquisition, cloud cover, and other quality measurements.

Missions Operations Center (MOC) - The place where the satellite or spacecraft receives coded instructions and delivers data. The coordination place (usually on Earth) for any space mission.

Modulation - The variation of a property of an electromagnetic wave or signal, such as its amplitude, frequency, or phase.

Mosaicking: - The assembling of photographs or other images whose edges are cut and matched to form a continuous photographic representation of a portion of the Earth's surface.

Multispectral - Sensing in usually 4 distinct wavelength bands (equivalent to colors, not all of which are visible to the human eye). Because the data handling capacity of the sensor is spread over these different wavelengths, this usually translates to lower resolution than panchromatic.

Multispectral image - A remote sensing image created using data collected from more than one band.

Multispectral Scanner (MSS) - A line-scanning instrument flown on Landsat satellites that continually scans the Earth in a 185 km (100 nautical miles) swath. On Landsats 1, 2, 4, and 5, the MSS had four spectral bands in the visible and near infrared with an IFOV of 80 meters. Landsat 3 had a fifth band in the thermal infrared with an IFOV of 240 meters. The MSS is a non-photographic imaging system that utilizes an oscillating mirror and fiber optic sensor array. The mirror sweeps from side to side, transmitting incoming energy to a detector array that sequentially outputs brightness values (signal strengths) for successive pixels, one swath at a time. The forward motion of the sensor platform carries the instrument to a position along its path where it can image an adjacent swath.

Nadir - Point on Earth directly beneath a satellite, the opposite of zenith.

NASA - National Aeronautics and Space Administration (NASA) was established in 1958 through the National Aeronautics and Space Act as an outgrowth of the National Advisory Committee for Aeronautics.

Noise - Any unwanted and unmodulated energy that is always present to some extent within any signal.

Orbit - The path of a body acted upon by the force of gravity.

Orbital period - The time it takes a satellite to complete one revolution (orbit) around the Earth. The orbital period of Landsat 7 is about 1.5 hours.

Oscillator - A device for producing alternating current.

Panchromatic - Sensitive to all or most of the visible spectrum, between 0.4 and 0.7 micrometers. Landsat 7 has a panchromatic band.

Partial Scene - A partial scene (less than 375 scans) may exist at the beginning or end of a subinterval because imaging events do not always start or end on WRS scene boundaries. If generated, browse and scene metadata for these occurrences accurately reflect their partial scene nature and geographic extent.

Passive Sensor - A type of remote sensing instrument, a passive sensor picks up radiation reflected or emitted by the Earth. ETM+ is a passive remote sensing system.

Payload Correction Data (PCD) - Imaging support data imbedded in the wideband data stream. Includes satellite attitude, ephemeris, time, angular displacement sensor (ADS) data, and payload state.

Pixel - An abbreviation of picture element. The minimum size area on the ground detectable by a remote sensing device. The size varies depending on the type of sensor.

Polar orbit - An orbit with an orbital inclination of near 90 degrees where the satellite ground track will cross both polar regions once during each orbit. The term describes the near-polar orbits of spacecraft.

Pseudorandom - Being or involving entities (as numbers) selected by a definite computational process that satisfy one or more standard tests for statistical randomness.

Quantization - 1) To subdivide into small but measurable increments. 2) To calculate or express in terms of quantum mechanics
Radar - "Short for ""radio detection and ranging,"" radar sends out short pulses of microwave energy and records the returned signal's strength and time of arrival."

Radiometer - A device that detects and measures electromagnetic radiation.

Radiometric - Relating to, using, or measured by a radiometer. The measurement of radiation.

Raster Data - An abstraction of the real world where spatial data is expressed as a matrix of cells or pixels, with spatial position implicit in the ordering of the pixels. With the raster data model, spatial data is not continuous but divided into discrete units. This makes raster data particularly suitable for certain types of spatial operations (e.g., overlays or area calculations). Unlike vector data, there are no implicit topological relationships.

Raster Graphics - Graphics in which an image is generated by scanning an entire screen or page and marking every point as black, white, or another color (as opposed to vector graphics).

Rasterize - The process of converting vector points, lines, and areas into raster image format.

Raw Data - Numerical values representing the direct observations output by a measuring instrument transmitted as a bit stream in the order they were obtained.

Real-time - Time in which reporting on events or recording of events is simultaneous with the events. For example, the real time of a satellite is the time in which it simultaneously reports its environment as it encounters it.

Remote Sensing - (1) In the broadest sense, the measurement or acquisition of information about some property of an object or phenomenon, by a recording device that is not in physical or intimate contact with the object or phenomenon under study. (2) Instruments that record characteristics of objects at a distance, sometimes forming an image by gathering, focusing, and recording reflected light from the Sun, or reflected radio waves emitted by the spacecraft.

Resampling - Modifying the geometry of an image (which may be from either a remotely sensed or map data source). This process usually involves rectification and/or registration.

Resolution - (1) A measure of the amount of detail that can be seen in an image; the size of the smallest object recognizable using the detector. (2) Intensity or rate of data sampling. In remotely sensed imagery, resolution is significant in four measurement dimensions: spectral, spatial, radiometric and temporal.

Retrograde - (1) Of or relating to the orbital revolution or axial rotation of a planetary or other celestial body that moves clockwise from east to west, in the direction opposite to most celestial bodies. (2) Of or relating to the brief, regularly occurring, apparently backward movement of a planetary body in its orbit as viewed against the fixed stars, caused by the differing orbital velocities of Earth and the body observed.

Revolution - Orbital motion about a point located outside the orbiting body.

Rotation - Motion around an axis passing through the rotating body.

Row - (1) The latitudinal (nominal) center line of a Landsat scene. (2) The scan lines that constitute an image.

Satellite - Any body, natural or artificial, in orbit around a planet. The term is used most often to describe moons and spacecraft. A man-made satellite is a spacecraft that orbits another body, such as a planet or the Sun. A natural satellite is another term for a moon.

Saturation - The intensity of a color. A highly saturated color is a vivid, brilliant color; to dull a color (decrease its saturation), you add small amounts of its complement, making it closer to gray.

S-Band - A range of microwave radio frequencies in the neighborhood of 2 to 4 GHz, used for communicating with piloted space missions (~2 Ghz).

Scan - An image data line produced from a single detector of a band during a scan.

Scan Line - A series of spacecraft pointings in one dimension.

Scanning Mirror - Landsat TM?s scanning mirror collects data on both the forward and reverse scans.

Scenes - Each Landsat image collected is a scene. Each Landsat scene is 115 x 106 miles long. The globe is divided into 57,784 scenes, and each Landsat scene has about 3 billion bytes of data.

Single Event Upsets - A Single Event Upset (SEU) occurs when an energetic particle travels through a transistor substrate and causes electrical signals within the transistor. This is a known phenomenon that usually occurs in near-earth orbit to spacecraft passing through the Van Allen belts, especially the northern and southern auroral zones and the south Atlantic anomaly.

Site - The physical location of an International Ground Station (IGS) or the Mission Operations Center (MOC).

Spatial Data - Any information about the location, shape of, and relationships among geographic features. This includes remotely sensed data as well as map data.

Spatial Resolution - The area on the ground that an imaging system (such as a satellite sensor) can distinguish.

Spectral Range - The wavelength difference between two wavelengths in adjacent orders at the same angle of diffraction

Spectral Response - The relative amplitude of the response of a detector vs. the frequency of incident electromagnetic radiation.

Spectrometer - An optical instrument that splits the light received from an object into its component wavelengths by means of a diffraction grating, then measuring the amplitudes of the individual wavelengths.

Subinterval - A segment of a raw wideband data interval received during a Landsat 7 contact period. Subintervals are caused by breaks in the wideband data stream due to communication dropouts and/or the inability of the spacecraft to transmit a complete observation (interval) within a single Landsat 7 contact period. The largest possible subinterval can be as long as a full imaging interval (a set of contiguous WRS scenes) transmitted during an uninterrupted contact period. The smallest possible subinterval can be as small as a set of a few contiguous ETM+ scans (a partial WRS scene). The smallest size of a subinterval is an operator modifiable parameter in LPS. If the smallest subinterval size is chosen to be as long as a full WRS scene, it will contain approximately 24 seconds worth of ETM+ data or 335 scans (without the 20 overlapping scans each

Sun-synchronous orbit - An orbit in which a satellite is always in the same position with respect to the rotating Earth at the same time of day. The satellite travels around the Earth in the same direction, at an altitude of approximately 438 miles (705 kilometers). Landsat-7 is sun-synchronous, always passing overhead at approximately 10:00 am local time.

Synchronous - The instantaneous alignment of two or more events in time. Events may occur at irregular intervals

Telemetry - (1) Radio signals from a spacecraft used to encode and transmit data to a ground station. (2) The science of measuring a quantity, transmitting the measured value to a distant station, and there, interpreting or recording the quantity measured.

Thematic data - Thematic data layers in a data set are layers of information that deal with a particular theme. These layers are typically related information that logically goes together.

Thermal infrared - Electromagnetic radiation with wavelengths between 3 and 25 micrometers.

Thematic Mapper - "A Landsat multispectral scanner designed to acquire data to categorize the Earth's surface. Particular emphasis was placed on agricultural applications and identification of land use. The scanner continuously scans the surface of the Earth, simultaneously acquiring data in seven spectral channels. Overlaying two or more bands produces a false color image. The ground resolution of the six visible and shortwave bands of the Thematic Mapper is 30 meters, and the resolution of the thermal infrared band is 120 meters. Thematic mappers were flown on Landsat 4 and 5."

U.S. Geological Survey (USGS) - A bureau of the Department of the Interior. USGS was established in 1879 following several Federally sponsored independent natural resource surveys of the West and Midwest. The Department of the Interior has responsibility for most of our nationally owned public lands and natural resources. The USGS monitors resources such as energy, minerals, water, land, agriculture, and irrigation. The resulting scientific information contributes to environmental-policy decision-making and public safety. For example, USGS identifies flood- and landslide-prone areas and maintains maps of the United States.

Universal Transverse Mercator (UTM) Projection - A widely used map projection that employs a series of identical projections around the world in the mid-latitude areas, each spanning six degrees of longitude and oriented to a meridian. This projection is characterized by its conformality; that is, it preserves angular relationships and scale and it easily allows a rectangular grid to be superimposed on it. Many worldwide topographic and planimetric maps at scales ranging between 1:24,000 and 1:250,000 use this projection.

Uplink - A connection through which signals transmit to a satellite.

Upper Scene Corners - The corners associated with the trailing edge (first scan) of a scene. For descending path scenes, the upper left corner corresponds to the northwest corner of a scene and the upper right corner corresponds to the northeast corner of a scene. For ascending path scenes, the upper left corner corresponds to the southeast corner of a scene and the upper right corner corresponds to the southwest corner of a scene. These mappings hold for the band file geolocation fields and the metadata file.

Vector Data - Vector data, when used in the context of spatial or map information, refers to a format where all map data is stored as points, lines, and areas rather than as an image or continuous tone picture. These vector data have location and attribute information associated with them.

Visible radiation - The electromagnetic radiation that humans can see as colors. The visible spectrum is composed of wavelengths between 0.4 to 0.7 micrometers. Red is the longest and violet is the shortest. Landsat 7 has three visible bands in red, green, and blue.

Wavelength - The distance from crest to crest, or trough to trough, of an electromagnetic or other wave. Wavelengths are related to frequency: The longer the wavelength, the lower the frequency.

Worldwide Reference System (WRS) - A global indexing scheme designed for the Landsat Program based on nominal scene centers defined by path and row coordinates.

X-band - A nominal frequency range from 12.5 to 8 GHz (2.4 to 3.75 cm wavelength) within the microwave (radar) portion of the electromagnetic spectrum. X-band is a suitable frequency for several high-resolution radar applications and is used for both experimental and operational airborne systems.
No Y entries
Zenith - The point on the celestial sphere directly above the observer. Opposite the nadir.

Acronyms

 

Acronyms: Contains a list of acronyms located in Landsat documentation and throughout the web site.

Download All Acronyms - .xls (97 KB)

A&A
A&E
A&P
A&P OPS
AA
AAC
AADP
AAG
AAOS
AAR
AAS
AATHom
ABML
ABPL
ABS
AC
ACCA
ACK
ACL
ACQ
ACRES
ACS
ACSLS
ACTHom
ACU
ACWP
A/D
AD
ADA
ADAT
ADC
ADD
ADF
ADIC
ADM
ADML
ADP
ADPL
ADS
ADSA
ADVP
AE
AEA
AEM
AES
AETD
AFB
AFM
AFOV
AFWA
AGC
AGE
AGS
AGU
AIM
AIP
AIS
AIT
AJAX
ALI
ALIAS
AM
AMP
AMTS
AN
ANC
ANN
ANSI
ANSS
ANTLR
AO
AOI
AOS
APAC
API
APID
APMC
APO
AQ
AQPSK
AR
ARB
ARD
ART
AS
ASA
ASB
ASCII
ASGUI
ASHRAE
ASIC
ASN
ASPRS
ASQC
AST
ASTER
ASTM
AT-ACCA
ATBD
ATCS
ATHom
ATK
ATL
ATM
ATO
ATP
ATS
ATT
AU
AUI
AVHRR
AVI
AVPD
AVT
AWiFS
AWM
Authorization and Authentication or Archive and Access or Associate Administrator
Access and Exploration
Archive and Production
Archive and Production Operations
Active Archive or Alternative Analysis or Associated Administrator
Archive Advisory Committee
Active Archive Data Package
Association of American Geographers
Albers Automatic Ordering System
After Action Report
Anomaly Analysis Subsystem
Average Across-Track Homogeneity
As-Built Materials List
As-Built Parts List
Absolute
Alternate Current or Archive Cache or Actual Cost
Automated Cloud Cover Assessment or Actual Cloud Cover Average
Acknowledgement
Access Control List
Acquired Scenes Report
Australian Center for Remote Sensing
Attitude Control System
Automated Cartridge System Library Software
Average Cross-Track Homogeneity
Antenna Control Unit
Actual Cost of Work Performed
Analog/Digital
Active Directory or Associate Director
Angular Displacement Assembly or Attitude Displacement Assembly
Application and Data Assessment
After DC Restore or Ancillary Data Corrector or Analog-to-Digital Conversion
Algorithm Description Document
Ancillary Data File
Advanced Digital Information Corporation
Administrative Message
As-Designed Materials List
Ancillary Data Preprocessor
As-Designed Parts List
Attitude Displacement Sensors or Angular Displacement Sensor or Archive Data Stager
Attitude Displacement Sensor Assembly
Algorithm Development and Verification Plan
Archive Element
Albers Equal Area
Auxiliary Electronics Module
Advanced Encryption Standard
Applied Engineering and Technology Directorate
United States Air Force Base
Anomalous Frame Manager
Angular Field of View
Air Force Weather Agency
Automatic Gain Control
Automated Ground Equipment
Alaska Ground Station
American Geophysical Union
Algorithm Integration Meeting
Archival Information Package
Automated Information Security
Algorithm Implementation Team
Asynchronous Java Script and XML
Advanced Land Imager
Advanced Land Image Assessment System
Artifact Mask
Allocation Management Planner
Asset Management Tracking System
Ascending Node
Ancillary File
Annotation File
American National Standards Institute
Advanced National Seismic System
Another Tool for Language Recognition
Authorization Official or Authorizing Official
Area of Interest
Acquisition of Signal or Arrival On-Site or Automated Ordering System
Acquisition Procurement Advisory Council
Application Programming Interface
Application Identification
Agency Program Management Council
Accountable Property Officer
Advanced Queuing
Asynchronous Quadrature Phase Shift Keying
Archive or Axial Ratio or Acceptance Review
Architecture Review Board or Anomaly Review Board
Analysis Ready Data
Anomaly Resolution Team
Archive Server
Archive Server Application or Alice Springs [Station] Australia
Administrative Services Branch
American Standard Code for Information Interchange
Archive Server Graphical User Interface
American Society of Heating, Refrigeration and Air-Conditioning
Application Specific Integrated Circuit
Alice Springs Ground Station or Australian Network
American Society of Photogrammetry and Remote Sensing
American Society for Quality Control
Active Scan Time
Advanced Spaceborne Thermal Emission and Reflection
American Society for Testing of Materials
Artificial Thermal Automated Cloud Cover Assessment
Algorithm Theoretical Basis Document
Absolute Time Command Sequence
Along-Track Homogeneity
Alliant Techsystems
Automated Tape Library
Asynchronous Transfer Mode
Authority to Operate
Authority to Proceed
Absolute Time Sequence or Automatic Transfer Switch
Authorization to Test
Astronomical Units
Analyst User Interface
Advanced Very High Resolution Radiometer
Audio Video Interleave
Avtec Programmable Demodulator
Algorithm Verification Test
Advanced Wide-Field Sensor
Analytical Workspace Manager

B&A
B1
B2B
B2BCal
BA
BAC
BAD
BASIS+
BATC
BBC
BBOX
BC
BCD
BCH
BCISO
BCR
BCWP
BCWS
BD
BDA
BER
BERT
BIA
BIH
BIL
BIP
BIP2
BIS
BITSM
BJC
BKT
BLM
bLMOC
BME
BMO
BMOC
BMOE
BN
BOC
BOE
BOM
BP
BPA
BPAL
BPDU
BPF
BPG
BPSK
BRAA
BRAT
BRDF
BRDF-n
BRDF-s
BSP
BSQ
BSSC
BSTAR
BSU
BTC
BTF
BTI
BUI
BUTST
BVR
BWTST
Billing & Accounting
Build 1
Band-to-Band
Band-to-Band Calibration
Billing and Accounting or Burned Area
Budget at Completion
Block Address Data
Budget and Science Information System Plus
Ball Aerospace & Technology Corporation
Black Body Calibrator
Bounding Box
Best Case
Binary-Coded Decimal
Bose-Chaudhuri-Hocquenghem Error Detection and Correction
Bureau Chief Information Security Officer
Baseline Change Request
Budgeted Cost of Work Performed
Budgeted Cost of Work Scheduled
Band
Bulk Download Application
Bit Error Rate
Bit Error Rate Test
Business Impact Analysis or Business Impact Assessment
Bureau International de l'Heure
Band Interleaved by Line
Band Interleaved by Pixel
Band Interleaved by Pixel Pair
Bureau of Industry and Security
Bureau Information Technology Security Manager
Beijing, Peoples Republic of China Ground Station
Bangkik, Thailand Ground Station
Bureau of Land Management
Backup Landsat Multi-Satellite Operations Center
Browser Mean Element
Business Management Office
Backup Mission Operations Center
Backup Mission Operations Element
Background Noise
Budget Object Class
Basis of Estimate
Bill of Materials
Bias Parameter
Blanket Purchase Agreement
Best Practices Asset Library
Bitstream Protocol Data Unit
Bias Parameter File
Bias Parameter Generator
Biphase Shift Keying
Band Registration Accuracy Assessment
Bit Rot Assessment Tool
Bi-directional Reflectance Distribution Function
Normalized Bi-directional Reflectance Distribution Function
Spectral Bi-directional Reflectance Distribution Function
Best Security Practices
Band Sequential
Bit Synchronizer / Signal Conditioner
Drag-Related Parameter in the NORAD Two-Line Element
Baseband Switching Unit
Bench Test Cooler
Ball Test Facility
Blank Tape Interface
Bumper mode User Interface
Bureau Unix Technical Support Team
Boast Voltage Regulator
Bureau Windows Technical Support Team

C
C&DH
C&A
C&T
C&T DB
C0
C1
C2
C3S
CA
CADU
CAGE
CAL
CalManWG
CALTest
Cal/Val
CAM
CAOS
CAP
CAPE
CAPERD
CARA
CARD
CASA
CA-WAD
CBA
CBB
CBC
CBG
CBN
CC
CCA
CCB
CCD
CCDC
CCE
CCI
CCL
CCM
CCMS
CCOH
CCP
CCR
CCRS
CCS
CCSDS
CCT
CD
CDB
CDBS
CDE
CDH
CDI
CDLR
CDMS
CDR
CDRL
CD-ROM
CDS
CDT
CE
CE90
CEER
CEOS
CER
CERT
CES
CF
CFC
CFDP
CFL
CFMask
CFP
CFPA
CFR
CGB
CI
CIA
CIB
CIC
CIIL
CIL
CIO
CIRC
CIS
CISO
CISSP
CITT
CIU
CLCW
CLOB
CLR
CLTU
CLU
cm
CM
CMB
CMC
CMD
CMG
CMM
CMMI
CMO
CMP
CMS
CN
CNDs
CNES
CNNS
CNR
CO
COA
COC
COFUR
COG
COI
COIGUI
COLA
COMM
COMSEC
CONAE
Con Ops
CONUS
COOP
COP
COR
COTR
COTS
CP
CPAF
CPC
CPF
CPFF
CPI
CPIC
CPM
CPO
CPR
CPR1
CPR4
CPR5
CPS
CPT
CPU
CR
CR1
CR1MSS
CR2
CR2IT
CR2OPS
CR2ST
CR3
CRADA
CRaM
CRC
CRDEV
CRIT
CRM
CRMP
CRMT
CROPS
CRS
CRSSGS
CRST
CRTEST
CS
CSA
CSAM
CSC
CSCI
CSIRT
CSIS
CSMO
CSO
CSOP
CSR
CSS
CSU  
CSV
CTDiff
CTE

CTHome
CTP
CTS  
CTV  
CUB
CUI
CV  
CV-5
CV-7
CVCDU
CVCM
CVDQA
CVE
CVS
CVT
CVTK
CVTKRD
CVWG
CW
CWBS
CY
Centigrade
Command and Data Handling
Certification and Accreditation
Command and Telemetry
Command and Telemetry Database
Coefficient 0
Coefficient 1
Coefficient 2
NPOESS Command, Control, and Communications Segment
Conjunction Assessment or Control Account or Cost Account
Channel Access Data Unit
Commercial and Government Entity
Calibration Data
Calibration Maneuver Working Group
Calibration/Validation Test
Calibration/Validation
Control Account Manager or Command Authorization Meeting or Communications Security Account Manager
Collection Automatic Ordering System
Cartridge Access Port or Control Account Plan
Collection Activity Planning Element
CAPE Requirements Document
Conjunction Assessment Risk Analysis
Constraints and Restrictions Document
Cloud And Cloud Shadow Assessment
Cost Account Work Authorization Document
Cost Benefit Analysis
Contract Budget Base
Cipher Block Chaining
Configuration and Build Guide
Cuiaba Earth Station
Cubic Convolution or Computer Compatible Tape or Cloud Cover
Cloud Cover Assessment  or Clinger-Cohen Act
Configuration Control Board
Charge-Coupled Device
Continous Change Detection and Classification
Cryocooler Electronics
Controlled Cryptographic Item
Commerce Control List
Cloud Cover Manager
Combined Cache Management Subsystem
Cost Center Overhead
Configuration Change Process or Contamination Control Process or Cloud Cover Prediction
Configuration Change Request
Canada Center for Remote Sensing
COI Cleanup System or Confirmed Contact Schedule or Constellation Coordination System
Consultative Committee for Space Data Systems
Computer Compatible Tape or Credit Card Transaction
Change Directory or Compact Disk
Centralized Database
Centralized Database System
Common Desktop Environment
Command and Data Handling
Capture Device Identifier
Command Data Loss Report
Carrier Doppler Measurement System
Critical Design Review or Calibration Data Record or Climate Data Records
Contract Data Requirements List or Command Data Loss Report
Compact Disk-Read Only Memory
Coded Data Segment or Comprehensive Discrepancy System
Central Daylight Time or CPF Distribution Tool
Circular Error or Cognizant Employee
Circular Error 90
Critical Event Readiness Review
Committee on Earth Observing Satellites
Cost Estimating Relationship
Community Emergency Response Team
Cost Element Structure
Correction Factor or Cloud Fraction
Contact Forecast Confirmation or Cloud Fraction Climatology
CCSDS File Delivery Protocol
Conflict Notice
C version of Fmask
Cold Focal Plane
Cold Focal Plan Array or Cold Focal Plane Assembly
Code of Federal Regulations or Contact Forecast Request
Calculated Gains and Biases
Configuration Item  or Continuous Integration
Confidentiality, Integrity, and Availability
Controlled Image Base
Computer Interrupt Code
Configuration Item Identifier List
Critical Items List
Chief Information Officer
Computer Incident Reporting Center
Center for Information Security
Chief Information Security Officer
Certified Information Systems Security Professional
Center Information Technology Team
Controls Interface Unit
Command Link Control Word
Character Large Object
Combined Labor Rate Contractor Labor Rate
Command Link Transmission Unit
Climate and Land Use
Centimeter
Configuration Management or Center of Mass
Change Management Board
Center Management Council
Command
Climate Modeling Grid
Capability Maturity Model
Capability Maturity Model Integration
Configuration Management Office
Configuration Management Plan or Change Management Plan
Content Management System
Coherent Noise
Could-Not-Duplicates
Centre National d’Etudes Spatiales
Committee on National Security Service
Carrier-to-Noise Ratio
Contract Officer or Content Owner
Cordoba, Argentina Ground Station
Certificate of Completion or Cost of Consequence
Cost of Fulfilling a User Request
Center of Gravity or Continuity of Government
Common Order Interface
Common Order Interface Graphical User Interface
Collision Avoidance
Communications Subsystem
Communications Security
Commission Nacional De Actividades Espaciales
Concept of Operations
Continental United States
Continuity of Operations
Contingency Operating Procedure
Contracting Officer Representative or Cost of Reproduction
Contracting Officer’s Technical Representative
Commercial Off-The-Shelf
Calibration Parameter or Change Proposal
Cost Plus Award Fee
Contingency Plan Coordinator
Calibration Parameter File
Cost-Plus-Fixed Fee
Cost Performance Index
Capital Planning and Investment Control
Critical Path Methodology
Custodial Property Officer
Cost Performance Report
Cost Performance Report 1
Cost Performance Report 4
Cost Performance Report 5
Calibration Parameter Management and Testing Subsystem or COMSEC Security Plan
Comprehensive Performance Test
Central Processing Unit
Central Repository or Controlled Repository or Change Request or Contingency Reserve or Carriage Return or Confirmation Review
Computer Room 1
Computer Room 1 Mass Storage System
Computer Room 2
Centralized Repository 2 Integration and Test
Centralized Repository 2 Operations
Centralized Repository 2 System Test
Computer Room 3
NOAA Big Data Cooperative Research and Development Agreement
Combined Radiometric Model
Cyclic Redundancy Check or Cyclic Redundancy Code
Central Repository Development
Central Repository Integration and Test
Customer Relationship Management or Continuous Risk Management
Continuous Risk Management Plan
Contingency Response Management Team
Central Repository Operations
CDF Retrieval Subsystem
China Remote Sensing Satellite Grand Station
Central Repository System Test
Central Repository Test
Customer Service
Configuration Status Accounting or Commissioning Support Area
Cyber Security Assessment Management
Computer Software Component
Computer Software Configuration Item
Computer Security Incident Report Team
Control and Schedule Interface System
Chief Safety and Mission Assurance Officer
Communication Services Office or Chief Safety and Mission Assurance Officer
COMSEC Standard Operating Procedure
Capture Success Rate or Capture Success Ratio or Customer Service Representative
Cascading Style Sheet or Central Security Service
Computer Software Units
Comma Separated Values
Cross-Track Difference
Calibration Test Equipment or Compatibility Test Equipment
Cross-Track Homogeneity
Command and Telemetry Processors
Capture Transfer Subsystem
Compatibility Test Van
Cuiba, Brazil Ground Station
CPF User Interface or Controlled Unclassified Information
Command Verification or Cost Variance
Calibration and Validation 5
Calibration and Validation 7
Coded Virtual Channel Data Unit
Collected Volatile Condensable Material or Collected Volatile Condensable Mass
Calibration Validation Data Quality Assurance
Calibration Validation Element
Concurrent Versions System
Calibration and Validation Team
Calibration / Validation Tool Kit
Calibration and Validation Toolkit Requirements Document
Calibration-Validation Working Group
Continuous Wave
Contractor Work Breakdown Structure
Contract Year

D&M
D1R
D3
DA
DAAC
DACA
DAE
DAF
DAG
DAM
DAP
DAR
DART
DAS
DASB
DAT
DAU
DB
dB
DBA
DBaaS
DBAR
DBCI
DBDD
dB-Hz
dBi
DBI
dB/K
DBMS
DBS
dBW
D/C
DC
DC&P
DCAA
DCCB
DCE
DCG
DCN
DCO
DCOI
DCP
DCPF
DCR
DCRS
DCRSf
DCRSi
DCRSUI
DCS
DCT
DDD
DDI
DDL
DDR
DDRC
DDS
DDT
DDV
DE
DEF
Delta-I
DEM
DEPEPH
DES
DET
DEU
DEV
DF
DFCB
DFD
DFP
DFT
DG
DGC
DGR
DGT
DHCP
DHF
DHN
DHS
DIAR
DIAT
DID
DIE
DIR
DIRT
DIS
DiTL
DIV
DKI
D/L
DLT
DM
DMA
DMAPI
DMB
DME
DMF
DMI
DMID
DML
DMP
DMR
DMS
DMSP
DMU
DMZ
DN
DNS
DO
DOC
DoD
DOI
DOORS
DOORS-NG
DOP
DOQ
DORRAN
DoS
DOS
DOY
DP
DPA
DPAS
DPASRD
DPD
DPL
DPMC
DPR
DPP
DPS
DQA
DQV
DR
DRA
DRAC
DRB
DRC
DRC-16
DRE
DRFP
DRM
DRP
DRSF
DRTS
DSB
DSI
DSL
DSN
DSS
DST
DSW
DSWE
DTED
DTG
DTO
DTR
DTS
DUI
DUNS
DUZ
DV
DV&E
DVD
DVD-R
DWF
DXL

Development and Maintenance
DMS Generate L1R
50GB Data tape cartridge from StorageTek
Document Administrator
Distributed Active Archive Center
Days After Contract Award
Data Acquisition Element
Data Acquisition Facility
Database Administrator Guide
Data Acquisition Manager or Database for Analysis and Modeling
Data Acquisition Plan or Data Acquisition Planner
Data at Rest
Data Access Restriction Tool
Data and Applications Support
Direct Access S-Band
Data Access Tool
Defense Acquisition University
Database or Data Block
Decibel
Database Administrator
Database as a Service
Database Access  Routines
Database Configuration Item
Database Design Description  or Database Description Document
Decibel-Hertz
Decibel above isotropic
Database Interface
Decibel per Degree Kelvin
Database Management System
Data Services Branch
Decibel Relative to 1 Watt
Down Converter
Direct Current
Data Capture and Processing Facility
Defense Contract Audit Agency
DHF Configuration Control Board or Development Configuration Control Board
Data Collection Event
DMS Generate Custom GCPLib
Document Control Number or Document Change Notice
DMS Capture Order
Data Center Optimization Initiative
Data Collection Planners
Data Capture & Processing Facility
Document Change Request
Data Collection and Routing Subsystem or Data Collection and Routing System
Data Collection and Routing Subsystem file router or Data Collection and Routing System file router
Data Collection and Routing Subsystem interval router or Digital Cassette Recorder System Incremental
Data Collection and Routing Subsystem User Interface
Data Capture System or Data Characterization Subsystem or Destination Control Statement
Digital Cassette Tape
Displacement Damage Dose
DCS Data Ingest
Database Definition Language
Data Descriptor Record
DPAS Design Reference Case
DCS Database Server or Database Distribution Subsystem
DPAS Test Team
Dense Dark Vegetation
Definitive Ephemeris
Definitive Ephemeris Product
Delta-Inclination
Digital Elevation Model
Definitive Ephemeris Product
Station Description Message or DAAC Emergency System
Escape Detection
Digital Electronic Unit
Development
Diffuser Type
Data Format Control Book
Data Flow Diagram
DMS Format and Package
DMS File Transfer
Digital Globe
DMS Generate Custom GCPs
DMS Generate Report Statistics
DMS Generate Thumbnail
Dynamic Host Configuration Protocol
Data Handling Facility
Data Handling Node
Department of Homeland Security
Department of the Interior Acquisition Regulation
Daily Image Annotation Tape
Data Item Description or DMS Ingest L0R Data
DMS Ingest Element
Direction
Data Interception by Remote Transmission
Data Information System or Data Instrumentation System
Day in The Life
Data Integrity Validation
Parepare, Indonesia Ground Station
Downlink
Digital Linear Tape
Data Management or Document Management or Data Manager
Direct Memory Access or Defense Mapping Agency
Data Manager Application Programmer Interface
Data Management Branch
Development, Modernization, and Enhancement
Data Migration Facility
DCRS to MOE Interface
Data Management and Information Delivery
Data Manipulation Language
Document Management Plan or Data Management Policy
Detailed Mission Requirements
Data Management Subsystem or Degrees, Minutes, Seconds
Defense Meteorological Satellite Program
Data Migration Utility or Drag Make-Up
Demilitarized Zone
Descending Node or Digital Number
Domain Name Server or Domain Name System
Delivery Order
Department of Commerce
Department of Defense
Department of Interior or Digital Object Identifier
Dynamic Object-Oriented Requirements System
Dynamic Object-Oriented Requirements Management System Next Generation
Dilution of Precision
Digital Orthophoto Quadrangle
Distributed Ordering, Research, Reporting, and Accounting Network
Denial of Service
Department of State
Day-of-Year
Data Processing
Destructive Physical Analysis
Data Processing and Archive System
Ddata Processing and Archive System Requirements Document
DMS Placement Daemon
DMS Process L0R
Directorate Program Management Council
DMS Process ROLO Report
DMS Packet and Placement
Data Processing Subsystem or Data Processing System
Data Quality Analyst
Data Quality Validation
Delivery Record or Discrepancy Report or Disaster Recovery or Design Review
DMS Retrieve Ancillary
Dell Remote Access Controller
Discrepancy Review Board
Data Requirements List
16-day Design Reference Cage
DMS Retrieve Elevation
Draft Request for Proposal
DMS Resource Manager
Disaster Recovery Plan
Daily Request Status File
Data Reporting and Tracking Subsystem
Data Service Branch
DMS Subsetter Interface
Days-Since-Launch
Deep Space Network
Data Staging System or DPAS Subsetter
Data Support Team
DMS Setup Work Order
Dynamic Surface Water Extent
Digital Terrain Elevation Data
Day Time Group
Data Transfer Object
Document Transfer Request
Development and Training Simulations
Data Manager User Interface or DMS Universal L0R Ingest
Data Universal Numbering System
DMS UTM Zone
Data Validation
Data Validation & Exchange
Digital Versatile Disc
Digital Versatile Disc – Read Only
Design Web Format
DMS L0 and L1 Products

E&A
E&IT
EA
EAC
EAR
EAS
EASI
EAST
Eb  
EBAS
Eb/N0
EC
ECC

ECEF
ECF
ECI
ECITOD
ECIMOD
ECL
ECMP
eCPIC
ECR
ECS
ECU
ECV
EDAC
eDAR
EDC  
EDDDR
EDG
EDOS
EDU
EE
EEE
EEMT
EEO
EF
EFS
E-Government
EGS
EGSE
EIA
EIRP  
EIS
EISER
EJB
EKMS
EL1PS
ELV
e-mail
EMC
EMD
EMI
EMP
EMV
EN
ENVI
EO
EO-1
EOC  
EOF
EOIS  
EOL  
EOM
EOMP
EOP
EOS  
EOSAT
EOSDIS  
EPA  
EPF
EPGN
EPP
EPR
EPRP
EPS  
EPSG
ERB
ERD
EROS
ERR  
ERS
ERTS
ESA  
ESB
ESD
ESDIS  
ESF
ESM
ESMO
ESN
ESP
ESPA
ESRIN  
ESUN
ETC
ETE
ETL
ETM
ETM+  
ETMDSS
ETRO
ETV
EU  
EV
EVDCU
EVM
EVMS
EVP
EVS
EVT
e-WAD
EWR
EWW
Evaluation and Analysis
Engineering and Information Technology
Enterprise Architecture
Estimate at Completion
Export Administration Regulations
Evaluation and Analysis Subsystem
Enterprise Architecture Study Implementation
EROS Architecture Study Team
Energy per Bit
EROS Billing and Accounting System
Energy per Bit to Noise
Electronic Copy
Error Correction Code
Earth-Centered, Earth-Fixed
Earth Centered Fixed
Earth Centered Inertial
Earth Centered Inertial TRUE of Date
ECI Mean of Date
Emitter-Coupled Logic
EROS Contingency Plan Management
Electronic Capital Planning and Investment Control
Earth Centered Rotating
EOSDIS Core System
End Cryptographic Unit
Essential Climate Variable
Error Detection and Correction
Enterprise Data At Rest
EROS Data Center
EDC Daily Discrepancy Report or EDC Daily Data Received Report
EOS Data Gateway
EOS Data Processing Segment
Engineering Development Unit
Earth Explorer
Electrical, Electronic, Electromechanical
EROS Executive Management
Equal Employment Opportunity
Earth-Fixed
Encrypting File System
Electronic Government
Enterprise Ground System
Electrical Ground Support Equipment
Electronic Industry Alliance
Effective Isotropic Radiated Power
External Interface Specification
EROS Information System Event Response
Enterprise Java Beans
Electronic Key Management System
EDC Level 1 Prototype System
Expendable Launch Vehicle
Electronic Mail
Electromagnetic Compatibility
Enhanced Metadata
Electromagnetic Interference
Electromagnetic Pulse
Expected Monetary Value
EarthNow!
Environment for Visualizing Images
Earth Observing
Earth Observing 1
Earth Observation Center
End-of-File
Earth Observation Data & Information Systems
End-of-Line
End of Mission
End of Mission Plan
Executive Office of the President
Earth Observing System
Earth Observation Satellite Company
EOS Data and Information System
Euler Parameter or ESD Protected Area
ETM+ Processing Facility
EOS Polar Groundstation Network
Electronic Power Converter for Payload
Engineering Peer Review
Engineering Peer Review Plan
Electrical Power Subsystem
European Petroleum Survey Group
Engineering Review Board
Entity Relationship Diagram
Earth Resources Observation and Science
Error
EROS Registration Service
Earth Resources Technology Satellite
European Space Agency or Earth Sensor Assembly
Enterprise Service Bus
Earth Science Division or Electrostatic Discharge
Earth Science Data and Information System
Edge Spread Function
Equipment Support Module
Earth Science Mission Operations
Enterprise Services Network
Encapsulating Security Payload or Engineering Specialty Plans
EROS Science Processing Architecture
European Space Research Institute
Solar Spectral Irradiance
Estimate to Completion
End to End
Extraction, Translation, Load
Enhanced Thematic Mapper
Enhanced Thematic Mapper Plus
Enhanced Thematic Mapper Plus Data Subsetting Subsystem
Estimated Time of Return to Operations
Expected Time Value
Engineering Unit
Earned Value
Extended Virtual Channel Data Unit
Earned Value Management
Earned Value Management System
Environmental Verification Plan
Earth-Vehicle-Sun angle or Earned Value System
Enhanced Value Technique
Employee Work Authorization Document
Eastern and Western Ranges
Extended Work Week

F&PS  
FA
FAC  
FAD
FAI
FAQ
FAR
FASC  
FAST-L7A  
FAT
FAX  
FBI
FBMS
FC
FCA  

FC-AL
FCDAS
FD
FDAC
FDC
FDD
FDDI
FEP
FDF
FDIR
FDS
FEC
FEDS
FEMA
FEP
FFOV
FFP
FRR
FFRDC
FFS
FFT
FFTW
FGDC
FHS  
FHSERR
FIA
FIFO
FIPS
FIR
FISCAM
FISMA
FISSA
Fmask
FMEA
FMECA
FMFIA
FMT  
FNMOC
FOCCB
FOIA
FOM
FOP  
FOR
FORMATS
FOS
FOT  
FOTS
FOV
FPA
FPD
FPE
FPGA
FPM
FPPS
FQT
FRB
FRED
FRP
FRR
FRS
FS
fSCA
FSD
FSM
FSSC
FSV
FSW  
FTA
FTD
FTE
FTP  
FTS
FW
FWHM
FY 
Functional and Performance Specifications
Formulation Authorization
Full Aperture Calibrator
Formulation Authorization Document
Federal Acquisition Institute
Frequently Asked Question
Federal Acquisition Regulation
Full Aperture Solar Calibrator
FAST-Landsat 7 Format
Factory Acceptance Testing
Facsimile Transmission
Federal Bureau of Investigation
Financial and Business Management System
Formulation Contractor or Fiber Channel
Functional Configuration Audit
Fiber Channel-Arbitrated Loop
Fairbanks Command and Data Acquisition Station
Flight Dynamics
Failure Detection and Control
Failure Detection and Correction
Facilities Definition Document or Format Description Document
Fiber-Distributed Data Interface
Front End Processor
Flight Dynamics Facility
Fault Detection, Isolation, & Recovery
Flight Dynamics System
Forward Error Corrected
Front End Data System
Federal Emergency Management Agency
Front-End Processor
Full Field of View
Firm Fixed Price
Flight Readiness Review
Federally Funded Research and Development Centers
Fiscal Financial System
Fast Fourier Transform
Fastest Fourier Transform in the West
Federal Geographic Data Committee
First Half Scan
First Half Scan Error
Final Implementation Agreement
First In, First Out
Federal Information Processing Standards
Finite Impulse Response
Federal Information System Control Audit Manual
Federal Information Security Management Act
Federal Information System Security Awareness
Function of Mask
Failure Mode and Effect Analysis
Failure Modes, Effects, and Criticality Analysis
Federal Manager’s Financial Integrity Act
Format
Fleet Numerical Meteorology and Oceanography Center
Flight Operations Configuration Control Board
Freedom of Information Act
Facilities Operations Manager
Flight Operations Plan
Flight Operations Review
Flight Dynamics Orbit and Mission Aids Transformation System
Flight Operations Segment
Flight Operations Team
Free Off-The-Shelf
Field of View
Focal Plane Assembly or Focal Plane Array
Flight Projects Directorate
Focal Plane Electronics
Field-Programmable Gate Array
Focal Plane Modules
Federal Personnel Payroll System
Formal Qualification Testing
Full-Resolution Browse
Framed Raw Expanded Data
Federal Response Plan
Flight Readiness Review
File Retrieval System
Forecast Schedules
Fractional Snow Covered Area
Flight Systems Development
Flight Systems Manager
Financial Support Services Contract
Flight Software Vendor
Flight Software
Fault Tree Analysis
File Transfer Daemon
Full Time Equivalent or Full Time Employee
File Transfer Protocol
Flight Terminiation System
Firewall or Full Width
Full Width Half Maximum
Fiscal Year

G&A
GAfG
GAM
GAO
GAQD
GAR
GAST
GB  
GBFOM
GBICS
GBL
GCCB
GCDR
GCOR
GCP
GCRS
GCTP
GDAL
GDP
GDS
GEO  
GEOM
GeoRSS
GeoTIFF
GEVS
GFE
GFP
GFS
GFY
GHz
GIA
GIAC
GIDEP
GigE
GIO
GIPS  
GIS
GISRA
GISTDA  
GL
GLAMR
GLC
GloVis
GLS
GMAP
GMSEC
GMSR
GMT  
GN  
GNC
GNE
GNE-DCRS
GNEDD
GNERD
GOES
GOLD
GOP
GOS
GOT
GOTS
GP4  
GPD
GPDR
GPL
GPR
GPS  
GRI
GRIB
GRID
GRM
GRS
GRT
GRTP
GRTT
GS
GSA
GSC
GSCCB
GSCDR
GSD
GSDD
GSE
GSFC  
GSI  
GSICS
GSIRD
GSIT
GSITP
GSIWG
GSL
GSM
GSMO
GSMOR
GSOCD
GSOPD
GSPDR
GSRD
GSRR
GSRT
GSRVM
GSSP
GST
GSTDN
GSWG
GSVVP
GSVWG
G/T
GTOPO30
GUI  
GXA 
General and Administrative
Google Apps for Government
Geography Analysis and Monitoring
General Accounting Office
Originator Routing Code for IIRV Messages
Global Archive Refresh
Greenwich Apparent Sidereal Time
Gigabyte
Global Band Figure of Merit
Gigabit Interface Converters
Government Bill of Lading
Ground Segment Configuration Control Board
Ground System Critical Design Review
Temperature Corrected Gains
Ground Control Point
Geocentric Celectial Reference System
General Cartographic Transformation Package
Geospatial Data Abstraction Library
Gross Domestic Product
Ground Data Systems
Geolocation Index File
Geometric
Geographic Really Simple Syndication
Geographic Tagged Image File Format
General Environmental Verification Specification
Government Furnished Equipment
Government Furnished Property
Global File System
Government Fiscal Year
Gigahertz
Government Inspection Agency
Global Information Assurance Certification
Government Industry Data Exchange Program
Gigabit Ethernet
Geographic Information Officer
Geo-Informatics Products and Solutions
Geographical Information Systems
Government Information Security Reform Act
Geo-Informatics and Space Technology Development Agency (Thailand)
Geoscience Laboratory
Goddard Laser for Absolute Measurement of Radiance
Ground Look Calibration Request or Gilmore Creek
Global Visualization Viewer
Global Land Survey or Global File System
Global Monitoring Acquisition Plan
Goddard Mission Services Evolution Center
Government Monthly Status Review
Greenwich Mean Time
Ground Network
Gatineau, Canada Ground Station
Ground Network Element
Ground Network Element Data Collection and Routing System
Ground Network Element Design Document
GNE Requirements Document
Geostationary Operational Environmental Satellite
Goddard Open Learning Design
Ground Operations Plan
Geospatial One-Stop
Ground Operations Team
Government Off-The-Shelf
General Perturbations Theory
GSFC Policy Directive
Ground System Preliminary Design Review
General Public License
GNE Post-Pass Report or Goddard Procedural Requirement
Geometric Processing System or Gap Phase Statistic or Global Positioning System
Ground Reference Image
Gridded Data
Global Resource Information Database
Ground Readiness Manager
Grid Reference System (SPOT)
Ground Readiness Test
Ground Readiness Test Plan
Ground Readiness Test Team
Ground System or Ground Segment
U.S. General Services Administration or Ground Station Analyst
Ground Station Controller
Ground System Change Control Board
Ground System Critical Design Review
Ground Sampling Distance or Guide Star Data
Ground System Design Document
Ground Support Equipment or Ground Station Engineers or Ground System Engineer
Goddard Space Flight Center
Ground Station Identifier or Ground System Infrastructure or Ground Support Infrastructure
Global Space-based Inter-Calibration System
Ground System Interface Requirements Document
Ground System Integration
Ground System Integration and Test Plan
Ground System Interface Working Group
GNU Scientific Library
Ground System Manager
Ground System Management Office or Ground System and Mission Operations
Ground System Mission Operations Review
Ground System Operations Concept Document
Ground System Operations Plan Document
Ground System Preliminary Design Review
Ground System Requirements Document
Ground System Requirements Review
Ground System Review Team
Ground System Requirements Verification Maintenance
Guide for Developing Security Plans for Information Technology Systems
Geographic Support Team or Ground Station Technician
Ground Spaceflight Tracking and Data Network
Ground System Working Group
Ground System Verification and Validation Plan
Ground System Verification Working Group
Gain over Temperature
Global 30 Arc-Second Elevation Data Set
Graphical User Interface
Gimbaled X-Band Antennae

HA
HAAT
HC
HCR
HDDS
HDF  
HDF5
HDF-EOS
HDF5-EOS
HDFS
HDLC
HDM
HDR  
HDRM
HDS
HDT  
HDTR
HE
Hex  
HgCdTe
HGS
HK
HLD
HMP
HOM
HOMFiH
HPA
HPN
HPP
HQ
HR
HR MSI
HRS
HRV
HSM
HSPD
HTM
HTML  
HTSI
HTTP  
HTTPS
HUB
HVAC
HVU
H/W
HWCI  
Hz
High Availability
Header, Ancillary, Annotation, and Trailer
Hard Copy
Hardware Configuration Request or Hardware Change Request
Hazards Data Distribution Systems
Hierarchical Data Format
Hierarchical Data Format Version 5
Hierarchical Data Format - Earth Observing System
Hierarchical Data Format Version 5 - Earth Observing System
Hadoop File System
High-Level Data Link Control
Hardware Data Manager or HSM Data Manager
Header
High Data Rate Modem
Horizontal Display Shift
High Density Tape
High Density Tape Recorder
Hardware Engineer
Hexadecimal
Mercury Cadmium Telluride
Hallway Ground Station
Housekeeping
High-Level Document
Hardware Management Plan
Hotine Oblique Mercator
Homogeneity Filter
High Power Antenna
Panchromatic Band Header File
Highest Point in Polygon
Headquarters
Human Resources or Heritage Review
High-Resolution Multi-Spectral Imager
Horizontal Resampling Space
High Resolution Visible (SPOT sensor)
Hierarchical Storage Management or Hierarchical Storage Manager
Homeland Security Presidential Directive
Thermal Bands Header File
Hypertext Markup Language
Honeywell Technology Solutions Inc.
Hypertext Transfer Protocol
Hypertext Transfer Protocol Secure
Historically Underutilized Business
Heating, Ventilation, & Air Conditioning
High Volume User
Hardware
Hardware Configuration Item
Hertz

I  
I&T
I1
I2
I2I
I2RV  
IA
IAA
IaaS
IAC
IAD
IAS
IASICP
IATO
IAU
IAW
IBM
IBR
IC
ICD
ICDR
ICe
ICF
ICMP
ICO
ICT
ICVS
ICWP
ID
IDCC
IDCO
IDCS
IDD
IDE
IDF
IDIQ
IDL
IDP
IDPS
IDR
IDS
IDSO
IDSR
IDWR
IE
IEC
IEEE
IEM
IERS
IETF
IF
IFAT
IFFT
IFOV  
IGE
IGMP
IGS
IIR
IIRR
IIRV  
IIOP
IKE
ILI
IM
IMB
IMF
IMP
IMR
IMS
IMT
IMU  
IMWD
IN
INCOSE
INFOSEC
ING
INM
INPE  
InSb
INV
I/O  
IOC
IOC
IOE
IONET
IP
IPA
IPAC
IPC
IPComp
IPDR
IPDS
IPDU
IPE
IPM
IPMR
IPMS
IPMSD
IPO
IPP
IPR
IPS
IPSec
IPSR
IPT
IPV
IR
IRB
IRD
IRFP
IRP
IRR
IRS  
IRU
IRV
ISA
ISCCP
ISCP
iSCSI
ISD
ISF
ISI
ISL
ISO  
ISRO
ISSLOB
ISSO
IST
ISTESR
IT
ITAR
ITC
ITOS
ITRS
ITS
ITSEC
ITSNOC
ITSOT
ITSS  
ITU
IU
IUR
IV&V
IVM
IW&DS
IWAD
IWG  
IWT
In-Phase Channel
Integration and Test
Internet 1
Internet 2
Image-to-Image
Improved Inter-Range Vector Message
Implementing Agreement or Impact Analysis or International Activities or Interagency Agreement
Inter-Agency Agreement
Infrastructure as a Service
Independent Assurance Contractor or Issue Assessment Code
Ion-Assisted Deposition
Image Assessment Subsystem or Image Assessment System
IAS Internal Calibrator Pulse
Interim Authority To Operate
International Astronomical Union
In Association With
International Business Machines
Integrated Baseline Review
Interface Control or International Cooperator or Internal Calibrator or Internal Cache
Interface Control Document
Instrument Critical Design Review
Internal Calibrator processing for Emissive bands
Initial Correction Factor
Internet Control Message Protocol
International Cooperator Office
Interface Connectivity Testing
Independent Calibration and Verification Segment or Independent Characterization and Verification System
IC Web Portal
Infrastructure Design or Interface Documents or Identification
Interval Data Collection Concept
Image Data Collection Omission
Image Data Collection Schedule
Interface Definitions Document
Integrated Device Electronics or Infrastructure Development or Integrated Development Environment
Interval Definition File or Image Data File
Indefinite Delivery Indefinite Quantity
Interactive Data Language
Individual Development Plan
Image Data Processing Subsystem
IAS Data Recorder
Intrusion Detection System or Interval Delivery Subsystem
Image Data Schedule Omission
Image Data Schedule Report
Idaho Department of Water Resources
Infrastructure Element
iStat Executive Committee or International Electrotechnical Commission
Institute of Electrical and Electronics Engineers
Integrated Electronics Module
International Earth Rotation Service
Internet Engineering Task Force
Intermediate Frequency
ITOS File Accounting Tool
Inverse Fast Fourier Transform
Instrument Field of View or Instantaneous Field of View
Independent Government Estimate
Internet Group Management Protocol
Integrated Security Gateway or International Ground Station
Image Impact Report
Instrument Integration Readiness Review
Improved Inter-Range Vector
Internet Inter-ORB Protocol
Internet Key Exchange
IGS to LAM Interface
Instant Message or Inclination Maneuver
Issue Management Board
Inverse Minor Frames or Interval Metadata File
Information Management Plan or Integrated Master Plan
Issue Management Record
Integrated Master Schedule or Information Management System
Integrated Mission Timeline
Inertial Measurement Unit or Internal Measurement Unit
Internet Moving Window Display
Impulse Noise or Ingest
International Council on Systems Engineering
Information Security
Ingest
IGS Network Manager
National Institute for Space Research
Indium Antimonite
Inventory
Input/Output
Initial Operational Capability or Initial On-orbit Checkout or In-Orbit Checkout
Installation Operational Certification or Initial Operational Configuration
Instrument Operations Element
IP Operational Network
Internet Protocol  or Installation Plan
Inter-Project Agreement or Instrument Pallet Assembly
Intergovernment Payment and Collection
Institute for Interconnecting and Packaging Electronic Circuits or Inter-Process Communication
IP Payload Compression Protocol
Instrument Preliminary Design Review
Information Product Data System
Internet Protocol Data Unit
Image Processing Element
IGS Priority Mask Online Tool  or IGS Priority and Request Map or Incyte Project Manager
Integrated Program Management Report
Integrated Project Management System
Integrated Project Management System Description
Integrated Program Office
Invoice Processing Platform
Intersegment Problem Report
Intrusion Prevention System or Image Processing Subsystem
Internet Protocol Security
Instrument Pre-Ship Review
Integrated Project Team or Integrated Product Team
Integrated Pulse Value
Infrared
Investment Review Board
Interface Requirements Document
Implementation Request for Proposal
Incident Reporting Plan
Integrated Readiness Review
Interface Requirements Specification
Inertial Reference Unit
Improved Inter-Range Vector Message
Internet Security and Acceleration or Interconnection Security Agreement
International Satellite Cloud Climatology Project
Infromation System Contingency Plan
Internet Small Computer System Interface
Interface Specification Document
Instrument Support Facility
Integral Systems Incorporated
Inter-Switch Link
International Standards Organization
Indian Space Research Organization
Information Systems Security Line of Business
Information System Security Official
Integrated System Test
Ingest Subsystem Test Execution Summary Report or Inventory Subsystem Test Execution Summary Report
Information Technology or Integration Test
International Traffic in Arms Regulations
Integration Test Case
Integrated Test and Operations System
International Terrestrial Reference System
Information Technology Services or Integrated Time Sweep
Information Technology Security
Information Technologies Service Network Operations Center
Information Technology Security Operations Team
Information Technology and Scientific Services
International Telecommunications Union
Individual User
Individual User Request
Independent Verification and Validation
Interface Verification Matrix
Information Warehouse and Data Store
Individual Work Authorization Document
Interface Working Group
Image Window Table

J2EE
JAR
JAXA
JaxB
JBOD
JBOSS
JCL
JDBC
JDK
JFIF
JMS
JMSRA
JPEG  
JPF
JPL  
JSA
JSP
JSpOC
JSR
JTS
JVM
Java 2 Platform, Enterprise Edition
Java Archive
Japan Aerospace Exploration Agency
Java Architecture for XML Binding
Just a Bunch Of Disks
J2EE Application Server
Joint Confidence Level
Java Database Connectivity
Java Development Kit
JPEG File Interchange Format
Java Messaging Service
Java Message Service Resource Adapter
Joint Photographic Experts Group
Job Parameter File
Jet Propulsion Laboratory
Johannesburg, South Africa Ground Station
Java Server Pages
Joint Space Operations Center
Java Portlet Specification
Java Topology Suite
Java Virtual Machine

K
KA8
KB  
KDP
kg
KHB
KHC
kHz  
KIS
km  
KMI
KML
KMP
KPI
KPM
KPR
KSAT
KSC
KUJ
KVM
Degrees Kelvin
Known Anomaly Eight
Kilobyte
Key Decision Point
Kilogram
Kennedy Space Center Handbook
Kashi, China Ground Station
Kilohertz
Kiruna, Sweden Ground Station
Kilometer
Key Management Infrastructure
Keyhole Markup Language
Key Management Plan
Key Performance Indicator
Key Performance Measures
Key Performance Requirement
Kongsberg Satellite Services
Kennedy Space Center
Kumomoto, Japan Ground Station
Keyboard Video Mouse

L+30
L+60
L+90
L0
L0c
L0R
L0Ra
L0Rc
L0Rp
L1
L1AOS
L1G  
L1Gs
L1Gt
L1P
L1R
L1R-H
L1SE
L1T
L1TP
L2
L3+
L4
L5
L7  
L8
L9
LACCA
LACS
LADS
LAM008
LAM  
LAM AS
LAN  
LANDSAT
LAS
LASP  
LaSRC
LAT  
LBG
LC
LCC
LCCB
LCCR
LCG
LCGS
LCMAP
LCR
LCSS
LDAP
LDB
LDCC
LDCM
LDI
LDIF
LDIS
LDPC
LDPS
LDRCS
LDTS
LEDAPS
LEI
LEM  
L&EO
LEO
LEO&A
LEO-T
LES
Level A
LF
LG
LGAC
LGGS
LGN  
LGPL
LGS
LGSOWG
LHC  
LHCP
LHS
LIB
LICS
LID
LIFO
LIL
LIM
LIMA
LIMB
LIR
LIS
LISS-III
LITAP  
LL  
LLI
LLIS
LM
Lmax
LMC
LMCM
LMD
LMDD
LMI
LMMS  
LMO
LMOC
LMOCRD
LMOP
LMST
LMWS
LNA
LNET
LO
LOA
LOC
LOE
LON
LOOFA
LOP
LOS
LP DAAC
LPDS
LPGS
LPGSUI
LPO
LPS  
LPSNG
LPSO  
LPT
LR
LRD
LRMB
LRR
LRS
LRSP
LS
LSAA
LSATH
LSATL
LSB  
LSC
LSCF
LSDS
LSF
LSIMSS
LSO
LSP
LSQ
LSQAT
LSR
LSRD
LSS
LST
LTA
LTAP
LTAS  
LTI
LTO
LTS
LTVA
LTWG
Ltypical
LUN
LUT
LV
LVDT
LVRR
LWIR  
LXR
Launch + 30 Days
Launch + 60 Days
Launch + 90  Days
Level 0
Level 0 Corrected
Level 0 Reformatted
Level 0 Reformatted Archive
Level 0 Reformatted Corrected
Level 0 Reformatted Product
Level 1
Level 1 Automatic Ordering System
Level 1 Systematic (Corrected)
Level 1 Geometric Systematic
Level 1 Systematic Terrain (Corrected)
Level 1 Precision (Corrected)
Level 1 Radiometric (Corrected)
Hybrid Level 1 Radiometric
Level 1 Sustaining Engineering
Level 1 Terrain (Corrected) or Level 1 Precision and Terrain
Level 1 Terrain Precision (Corrected)
Level 2
Level 3+
Level 4 or Landsat 4
Landsat 5
Landsat 7
Landsat 8
Landsat 9
Land Automated Cloud Cover Assessment
Landsat Archive Conversion System
LDCM Archive and Dissemination Segment
Interface Between COI PS and L0Rp PS
Landsat Archive Manager
LAM Archive Server
Local Area Network
Land Satellite
Land Analysis System
Laboratory for Atmospheric and Space Physics
Land Surface Reflectance Code
Latitude
Libreville, Gabon Ground Station
LDCM Contractor
Lambert Conformal Conic or Lifecycle Cost
Landsat Configuration Control Board
Landsat Configuration Change Request
Landsat Coordination Group
LDCM Contractor Ground Segment
Land Change Monitoring Assessment and Projection
Logical Change Record
LDCM Contractor Space Segment
Lightweight Directory Access Protocol
IAS Local Database
Landsat Data Continuity Contract
Landsat Data Continuity Mission
LPS Data Ingest or L0Ra Data Ingest
LDAP Data Interchange Format
LAM to DORRAN Interface System
Low Density Parity Check
Landsat Data Purchase System
LDCM Document Review Comment Spreadsheet
LPS Data Transfer Subsystem
Landsat Ecosystem Disturbance Adaptive Processing System
LAM to ECS Interface
Lower Equipment Module
Launch and Early Orbit
Low Earth Orbiting or Launch and Early Orbit
Launch, Early Orbit and Activation
Low Earth Orbiter-Terminal
Log file Extraction Services
Level Zero Aggregated
Line-Feed
L0Ra Generator
Landsat Global Archive Consolidation
Landsat Global Geodetic Standard
Landsat Ground Network
Lesser General Public License
Landsat 7 Ground System or Landsat Ground Station
Landsat Ground Station Operations Working Group
Left-Hand Circular
Left-Hand Circularly Polarized
Left-Hand Side or Left-Hand SLO
Library
Landsat International Communication System
Landsat and LDCM Inventory Database or LSDS Inventory Database
Last In, First Out
Landsat Inventory Loader
Landsat Inventory Management or LDCM Interface for Metadata
Landsat Image Mosaic of Antarctica
LAM Interface for Metadata and Browse
LDCM in Retrospect
Landsat Integration System or LACS Inventory System
Linear Imaging Self-Scanning Sensor III
Landsat Intersegment Technical Assessment Panel
Lower Left
LAM to LACS Interface
LAM LPGS Interface Subsystem
Labeled Mask
Maximum Radiance
Lockheed Martin Corporation
Launch Management Coordination Meeting
Landsat Mission Database
Landsat Metadata Description Document
Lower Equipment Module Interface
Lockheed Martin Missiles and Space
Landsat Mission Operations
Landsat Multi-Satellite Operations Center
Landsat Multi-Satellite Operations Center Requirements Document
Landsat Mission Operations Project
Local Mean Solar Time
Landsat Mission Web Site
Low Noise Amplifiers
Lustre Networking
Local Oscillator
Letter of Agreement
Letter of Cooperation
Level of Effort
Longitude
Landsat 7 On-Orbit Flight Automation
Landsat Operational Procedure
Loss of Signal or Line-of-Sight
Land Processes Distributed Active Archive Center
Level 1 Product Distribution System or LDCM Data Product Specification
Level 1 Product Generation System
Level 1 Product Generation Subsystem User Interface
Landsat Program Office or LSDS Program Office
Landsat 7 Processing System
Landsat Processing System Next Generation
Landsat Project Science Office
Limited Performance Test
Lower Right
Launch Readiness Date
LDCM Risk Management Board
Launch Readiness Review
Landsat Remote Sensing
Land Remote Sensing Program
Launch Segment
Landsat and Sentinel Archive and Access
High Saturation Radiance
Low Saturation Radiance
Least Significant Bit
Landsat Security Committee
Landsat Solar Calibration Frame
Land Satellites Data System
Line Spread Function
LDCM Scalable Integrated Multi-Mission Support System or Landsat Scalable Integrated Multi-Mission Support System
LDCM Science Office
Launch Support Program or Logistics Support Plan
Least Squares
Landsat Science Quality Assurance Team
Launch Support Room
LSDS Science Research and Development
Launch Services Segment
Landsat Science Team or Land Surface Temperature
Long Term Archive
Long-Term Acquisition Plan
Landsat Trending and Analysis System
Legacy Tape Ingest
Linear Tape Open
LACS Transcription System
Limited Technical Vulnerability Assessment
Landsat Technical Working Group
Typical Radiance
Logical Unit Number
Look-Up Table
Launce Vehicle
Linear Variable Differential Transformer
Launch Vehicle Readiness Review
Long Wavelength Infrared
Landsat Transfer Radiometer

m  
M2M
M&PCB
M&PCP
MA
MAC  
MACS
MAD
MAE
MAID
MAM
MAP
MAR
MAS  
MB  
MBO
Mbps  
MC
MCDL
MCDR
M-CDR
MCE
MCM
MCR
MCS  
MD
MD5
MDA
MDGLS
MDH
MDIO
MDL
MDM

MDR
MDS  
MDT
ME
MEB
MEC
MEF
MEOS
MER
mf
MF
MFC
MFPS
MFR
MG
MGS  
MGT
MHz  
MI
MIL
MIS
MISR
MIT
MJF

MJP
MLC
MLDRCS
MLH
MLI
MLT  
mm  
MM
mm/hr  
MM&A
MMA
MMIO
MMO
MMOIO
MMOSA
MMOSE
MMR
MMS
MO&DSD  
MOA
MOC  
MOCRD
MODIS  
MODNET  
MODTRAN
MOE
MOERD
MOI
MOM
MOP
MOPSS  
MOR
MORM
MOS
MOTS
MOU  
MOVE
MOWG
MP
M-PDF
MPEG
MPLS
MPR
MPS
MPSR
MR
MRB
MRC
MRG
MRLC
MRR
MRT
MRTG
ms  
MS
MSA
msb  
MSB  
MSCD  
MSE
MSFC
MSI
M-SIR
MSK  
MSM
MSM
MSO
MSPSP
MSR
M-SRR
MSS  
MSS-A
MSS-P
MSS-X
MST
MTA  
MTBF
MTDSS
MTF  
MTFC  
MTI
MTL
MTP  
MTR
MTS
MTTR
MTU
MUA
mW  
MWD
meter
Machine-to-Machine
Materials and Processes Control Board
Materials and Processes Control Program
Mission Archive or Multiple Access or Major Application or Mission Assurance
Media Access Control or Monitor and Control Subsystem
MSS-X Archive Conversion System or Monitor and Control Subsystem
Median Absolute Deviation
Materials Assurance Engineer
Massive Array of Idle Disks or Master Action Item Database
Mission Assurance Manager
Mission Assurance Plan
Mission Assurance Requirements
MODIS Archive System
Megabyte
Management by Objects
Megabit per Second
MAC Controller
Master Configured Document List or Master Controlled Document List
Mission Critical Design Review
MOC Critical Design Review
Mirror Control Electronics
Multi-Chip Module
Mission Concept Review
Monitor and Control Subsystem
Metrics Database or Mission Data or Mission Data
Message-Digital Algorithm 5
MacDonald, Dettwiler, and Associates
Mid-Decadal Global Land Survey
Mission Data Header
Mission Data Input / Output
Metadata Loader
Mission Data Management
Mission Dress Rehearsal or Mission Definition Review
MMO Database System or Metadata Server
Metadata Target
Memory Effect
Materials Engineering Branch or Main Electronics Box or McMurdo, Antarctica
Metrics ETL Component
Mission Essential Function
Multi-mission Earth Observation System
Mission Equipment Room
minor frame
Minor Frame
Microsoft Foundation Classes or MAC Fetch CPF
Major Frame Processing Subsystem
Multi-Functional Receiver
Metadata Generator
MODIS Ground Station or Management Server
Management Target
Megahertz
Mutual Information
Materials Identification List or MAC Inventory L0Ra
Master Integrated Schedule or Management Information System
Multiangle Imaging SpectroRadiometer
Massachusetts Institute of Technology
Major Frame
MAC Job Processor
Most Likely Case
Master LDRCS
Maximum Likelihood Estimate
MACS to LAM Interface
Mean Local Time
Millimeter
Multi-Mission or Mission Manager
Millimeters per Hour
Mission Monitor & Analysis
Mission Management Analyst
Modified Morarec Interest Operator
Mission Management Office
Mission Management Office Information Officer
MMO Security Activity
Mission Management Office Systems Engineer
Mission Requirements Review
MDGLS Management System or Multimission Modular Spacecraft
Mission Operations and Data System Directorate
Memorandum of Agreement
Mission Operations Center
Mission Operations Requirement Document
Moderate Resolution Imaging Spectrometer
MO&DSD Operational/Development Network
Moderate Resolution Transmittance atmospheric modeling software
Mission Operations Element
Mission Operations Element Requirements Document
Moment of Inertia
Mission Operations Manager
Mission Operations Plan
Mission Operations Planning and Scheduling System
Mission Operations Room or Mission Operations Review
Mission Operations Readiness Manager
Mission Operations Simulation
Mission Off-The-Shelf
Memorandum of Understanding
Mission Operations Voice Enhancement
Mission Operations Working Group
Multi-Processor
MOC Preliminary Design Review
Moving Picture Experts Group
Multi Protocol Label Switching
Monthly Progress Review
MODIS Processing System or Mission Plan System
Management Program Status Review or Monthly Project Status Report
Management Reserve
Milestone Review Board or Material Review Board
Metrics Reporting Component
Metrics Report GUI
Multi-Resolution Land Characteristics
Mission Requirements Review
Mission Readiness Testing
MultiRouter Traffic Grapher
millisecond
Multispectral
Master Schedule of Activities
Most Significant Bit
Most Significant Byte
Mirror Scan Correction Data
Mission Systems Engineering
Marshall Space Flight Center
Multi-Spectral Instrument
MOC System Integration Review
Receive Antenna Horizon Mask Message
MultiService Mobility or Mission Simulations Manager or Management Switch Module
Mission Operations Center Systems Manager
Mission Support Office
Missile System Prelaunch Safety Data Package
Monthly Status Review
MOC System Requirements Review
Multispectral Scanner or Mass Storage System
Multispectral Scanner - Archive Format
Multispectral Scanner - Processed Format
Multispectral Scanner data, reformatted CCT-X data
Mission Support Team
Metadata
Mean Time Before Failure
MS and TM Data Subsetting System
Modulation Transfer Function
Modulation Transfer Function Compensation
Matera, Italy
Level 1 Metadata
Distribution Product Metadata
Mission Transition Review
MDS Transformation Services
Mean Time to Restore or Mean Time to Repair or Mean Time to Recovery
Maximum Transmission Unit
Materials Usage Agreement
milliWatt
Moving Window Display

N0  
N/A  
NAD83
NAK
NARA
NAS
NASA  
Nascom  
NASDA  
NAVOCEANO
NBII
NB
NBR
NCAS  
NCC  
NCEP
NCSA  
NCT
NDA
NDE
NDF  
NDI
NDIA
NDP
NDPF
NDSI
NDVI
NEΔT
NED
NEDL
NEDT
NEMA
NEN
NENUG
NEOS
NEPAG
NESDIS
NewOps
NEX
NFS
NG
NGA
NGAC
NGST
NHB
NIC
NIFC
NIPD
NIR
NISN
NIST
NITF
NLAPS  
NLI
NLIP
nm
NMAS
NMD
NMS
NN
NOA
NOAA
NOC
NOLAN
NOM
NOR
NORAD
NOVAS
NP
NPD
NPOESS
NPR
NPS
NPSL
NPV
NRCA
NRT
NRTL
NRZ-L  
NRZ-M  
NSA
NSC
NSDI  
NSF
NSG
NSLRSDA
NSM
NSN/NSG
NSPAR
NSS
NSSDC
NSTC
NTE
NTIA
NTP
NUC
NUGS
NUP
NWIS
NWP
NWS
Noise Density
Not Applicable
North American Datum of 1983
Negative Acknowledgement
National Archive and Records Administration
NASA Assurance Standard or Network Attached Storage
National Aeronautics and Space Administration
NASA Communications
National Space Development Agency (Japan)
Naval Oceanographic Office
National Biological Information Infrastructure
Narrow Band
Normalized Burn Ratio or Navigation Base Reference
National Carbon Accounting System
Network Control Center
National Centers for Environmental Prediction
National Center for Supercomputing Applications
Network Connectivity Test
Non-Disclosure Agreement
Non-Destructive Examination
NLAPS Data Format
Non-Development Items
National Defense Industrial Association
National Satellite Land Remote Sensing Data Archive (NSLRSDA) Data Package
NASA Data Processing Facility
Normalized Difference Snow Index
Normalized Difference Vegetation Index
Noise Equivalent Delta Temperature
Natural Elevation Data
Noise Equivalent Detector Radiance
Noise Equivalent Detector Temperature
National Electrical Manufactures Association
Near Earth Network
Near Earth Network User’s Guide
National Earth Orientation Service
NASA EEE Parts Assurance Group
National Environmental Satellite Data and Information Service
New Operational Procedures System
NASA Earth Exchange
Network File System
National Guard
National Geospatial Intelligence Agency
National Geospatial Advisory Committee
Northrop Grumman Space Technology
NASA Handbook
Network Interface Card
National Interagency Fire Center
Network Interface Planning Document
Near-infrared
NASA Integrated Services Network
National Institute for Standards and Technology
National Imagery Transformation Format
National Land Archive Production System
National Land Imaging
National Land Imaging Program
Nanometer
National Map Accuracy Standards
National Mapping Discipline
Network Management Software
Nearest Neighbor
New Oblicating Authority
National Oceanic and Atmospheric Administration
NUGS Operations Concept
Nascom Operational Local Area Network
Network Operations Manager
NORAD Two Line Element Message
North American Air Defense
Naval Definition Vector Astronomy Software
Narrative Procedure
NASA Policy Directive
National Polar-orbiting Operational Environmental Satellite System
NASA Procedural Requirements
National Park Service
NASA Parts Selection List
Net Present Value or Net Pulse Value
Nonconformance Reporting and Corrective Action
Network Readiness Test
Nationally Recognized Testing Laboratory
Non-Return to Zero-Level
Non-Return to Zero-Mark
National Security Agency
Norwegian Space Centre
Normalized Snow Difference Index or National Spatial Data Infrastructure
National Science Foundation
Neustreilitz, Germany Ground Station
National Satellite Land Remote Sensing Data Archive
Network and Security Manager
Neustrelitz Ground Station (Germany)
Nonstandard Parts Approval Request
NASA Safety Standard
National Space Science Data Center
National Science and Technology Council
Not To Exceed
National Telecommunications and Information Administration
Network Time Protocol
Non-Uniformity Correction
NASA-USGS Joint Ground System
North Up
National Water Information System
Numerical Weather Prediction
National Weather Service

O&M
O&S
OA
OAG
OAR

OAV
OBC
OBE
OBP
OBS
Obs-IRD
OC
OCAO
OCC
OCD
OCI
OCIO
ODBC
ODC
ODL  
ODNI
ODOS
ODS
OE
OEM
OFE
OGC
OHS
OIRD
OITL
OIV
OLAP
OLI
OLI-2
OM
OMA
OMB
OMP
OMS
OO
OOB
OPA
OPM
OPM3
OPR
OPS  
Ops Con
Ops GUI
OR
ORB
ORR
ORT
OQPSK
OS
OSC
OSHA
OSI
OSS
OSSMA
OST
OSTP
OTB
OTF
OTS
OUI  
OV
OVA
OVAD
OVAP
OWB
OWSGUI
Operations & Maintenance
Operations & Sustaining
Operational Archive or Operations Agreement or Operations Analyst
Office of Acquisitions and Grants
On-Orbit Acceptance Review or Operational Acceptance Review
Operational Verification Assessment
Onboard Computer
Overcome By Events
On-Board Processor
Organizational Breakdown Structure
Observatory Interface Requirements Document
Online Cache or Operations Concept
Office of the Chief Administrative Officer
Operator Control Console or Occurrence
Operations Concept Document
Organization Conflict of Interest
Office of the Chief Information Officer
Open Database Connectivity
Other Direct Costs
Object Description Language
Office of the Director of National Intelligence
Order Distribution and Order Status
Order Distribution Service
Operations Engineer
Original Equipment Manufacturer or Oracle Enterprise Manager
Order Fulfillment Element
Open Geospatial Consortium
Order Handler Subsystem
Observatory Interface Requirements Document
Orbit-In-The-Life
On-orbit Initialization and Verification
On-Line Analytical Processing
Operational Land Imager
Operational Land Imager-2
Operations and Maintenance
Oblique Mercator Type A
Office of Management and Budget or Oblique Mercator Type B
Operations Management Plan
Optimum Management System
Orbit Oriented
Out-of-Band
Organizational Process Asset
Office of Personnel Management
Organizational Management Maturity Model
Office of Primary Responsibility
Operations
Operations Concept
Operations Graphical User Interface
Operations Readiness
Object Request Broker
Operations Readiness Review
Operational Readiness Test
Offset Quadrature Phase Shift Keying
Operating System
Orbital Science Corporation
Occupational Safety and Health Administration
Open Systems Interconnection
Object Storage Server or Operations Support Simulations
Office of Systems Safety and Mission Assurance
Object Storage Target
Office of Science and Technology Policy
Over Target Baseline
Optical Transfer Function
OLI-TIRS Subsetter or Over Target Schedule or Off-The-Shelf
Operator User Interface
Operational Verification
Operations Validation and Acceptance
Operational Verification Acceptance Document
Operational Verification Acceptance Period
Oracle Warehouse Browser or Oracle Warehouse Builder
Oracle Web Service GUI

P3I
P&C
P&S
PaaS
PAC  
PAIV
PAM
PAN  
PAP
PAPH
PAPL
PAR
PASC  
PB
PBL
PBS
PBTLM
PC

PCA  
Pcache
PCB
PCD  
PCDS  
PCI
PCI-E or PCIe
PCI-X
PCM
PCP
PCR
PCS  
PCSS
PCU
P/D
PD
PDA
PDB
PDD  
PDF  
PDI

PDL
PDM
PDPS
PDR
PDRD  
PDRM
PDS
PDU
PED
PER
PERT
PF
PF1
PFPA
PFR
PG
PgC
PgIMS
PgMP
PGN
PGS
PgWBS
PHA
PI
PIA
PIB
PICS
PID
PIE
PII
PIL
PIMS
PIP
PIV
PKI
PKO
PL
PLA
PLAR
PL-DRO
PL/SQL
PM
PMB
PMBOK
PMC
PMEF
PMI
PMMM
PMO
PMP
PMPDR  
PMPDRD  
PMRT
PMSC
PMSEIT
PMT
PN
PNG
PNTR  
PO
POA&M
POC
POJO
POL
POP
POS
POSC  
POSIX
PP
PPF  
PPL
PPM
ppm
PPOC
PPQA
PPR
PPS
PR
PRA
PRB
PRD
PRI
PRISM
PRL
PS  
PSA
PSD
PSF
PSGUI
PSI
PSK
PSLA
PSM
PSMON
PSR
PSU
PTM
PTP
PTR
PTS
PUB
PUP
PV
PVCS  
PVL  
PWA
PWB
PWBS
PWC
PWG
PWL
PWS
Preplanned Product Improvement
Project Management and Controls
Planning and Scheduling
Platform as a Service
Partial Aperture Calibrator or Prince Albert, Canada Ground Station
Project Acceptance and Implementation Variance
Pluggable Authentication Module
Production Acceptance Notification or Panchromatic
Primary Archive Program
Pseudo Average Pulse Height
Project Approved Parts List
Post Assessment Report
Partial Aperture Solar Calibrator
Playback or Petabyte
Project Baseline Log
Project Breakdown Structure
PB X-Band Housekeeping Telemetry
Personal Computer or Polyconic or Production Control or Program Charter or Property Clerk
Physical Configuration Audit or Physical Channel Access or Point of Closest Approach
Processing Cache
Parts Control Board or Project Control Board
Payload Correction Data
Payload Correction Data Subsystem
Peripheral Component Interface
Peripheral Component Interconnect Express
Peripheral Component Interconnect Extended
Pulse Code Modulation
Parts Control Plan
Project Closeout Review
Process Control Subsystem or Product Control Subsystem or Production Control Subsystem
Program Coordinate Systems Standards
Power Control Unit
Programmable Demodulator
Product Distribution or Position Description or Program Directive
Personal Digital Assistant
Program Decision Board or Project Database
Presidential Decision Directive
Portable Document Format or Payload Data Formatter
Product Delivery Interface
Product Design Lead
Precedence Diagramming Method
Planning and Data Processing Segment
Product Delivery Record or Preliminary Design Review
Product Delivery Record Discrepancy
Product Delivery Receipt Mechanism
Product Distribution System
Protocol Data Unit or Power Distribution Unit
Personal Electronic Device or Portable Electronic Device
Performance Evaluation Review or Pre-Environmental Review
Program Evaluation and Review Technique
Polarization Factor
Poker Flats 1
Prime Focal Plan Assembly
Problem / Failure Report
Product Generation
Program Charter
Program Integrated Master Schedule
Program Management Plan
Polar Ground Network
Product Generation System (Generic Name for NLAPS) or Product Generation Subsystem
Program Work Breakdown Structure
Preliminary Hazard Analysis
Primary Investigator
Project Implementation Agreement or Privacy Impact Assessment
Payload Interface Board
Pseudo-Invariant Calibration Site or Planetary Image Cartography System
Process Identification
Payload Interface Electronics
Personally Identifiable Information
Parts Identification List
Project Integrated Master Schedule
Premium Internet Protocol
Personal Identity Verification
Public Key Infrastructure
Project Kick-Off
Public Law
Payload Adapter
Post Launch Assessment Review or Program Level Requirements Agreement or Program Level Requirements Appendix
Phase Locked Dielectric Resonance Oscillator
Procedural Language / Structured Query Language
Phase Modulation or Program Management or Project Management
Performance Measurement Baseline
Project Management Book Of Knowledge
Performance Monitoring Counter or Program Management Council
Primary Mission Essential Function
Project Management Institute
Program Management Maturity Model
Persistent Mission Object
Project Management Professional or Project Management Plan or Procurement Management Plan
Physical Media Product Delivery Record
Physical Media PDR Discrepancy
Post-Mission Readiness Testing
Program Management Systems Committee
Program Management, Systems Engineering, and Integration and Test
Performance Measurement Technique
Pseudorandom Noise or Pseudo-Noise
Portable Network Graphics
Pointer
Project Owner or Purchase Order
Plan of Action and Milestones
Point of Contact
Plain Old Java Object
Policy
Point-Of-Presence or Point of Performance or Period of Performance
Position and Orientation System
Petrotechnical Open Software Corporation
Portable Operating System Interface for Unix
Planning Package
Payload Processing Facility
Preferred Parts List
Program Project Management
Parts Per Million
Procurement Point of Contact
Process and Product Quality Assurance
Post-Pass Report
Pulse Per Second
Program Review or Problem Report or Product Request or Purchase Request
Paperwork Reduction Act or Probabilistic Risk Assessment
Problem Report Message
Project Reference Database
Priority Mask Message
Professional Resources in Information Systems Management
Pull Remote Logs
Polar Stereographic or Production Server
Pre Security Assessment
Power Spectral Density
Point Spread Function
Production Server Graphical User Interface
PCS Startup IAS
Phase Shift Keyed
Project Service Level Agreement
Project Safety Manager
Power Status Monitor
Priority/Service Request Mask File or Pre-Ship Review or Pre-Shipment Review or Program Status Review
Power Supply Unit
Principal Task Manager
Primary Transfer Program or Programmable Telemetry Processor
Post-Test Review
Project Task Structure
Publication
Perfectly Uniform Pitch
Planned Value
Polytron Version Control System
Parameter Value Language
Printed Wire Assembly
Printed Wiring Board
Project Work Breakdown Structure
PCS Work Order Controller
PCS Work Order Generator
PCS Work Order Scheduler Lite
Project Web Site

Q&A  
Q  
Q1
Q1G
Q1R
Q2
Q3
Q4
QA
QAA  
QAS
QB
QC
QCM
QFS
QMM  
QMP
QMS
QOCI
QPSK  
QUI
QWIP
QWR
Quality and Accounting
Quadrature Channel
Quarter 1
L1G Quality Assurance
L1R Quality Assurance
Quarter 2
Quarter 3
Quarter 4
Quality Assurance or Quality Assessment
Quality Assurance Audit
Quality Assessment Subsystem
Quality Board or Quality Band
Quality Control
Quartz Crystal Microbalance
Quick File System
Landsat Quarterly Management Meeting
Quality Management Plan
Quality Management System
Qt Oracle Call Interface
Quadrature Phase Shift Keying
Quality Assurance User Interface
Quantum Well Infrared Photometers
Quarterly Web Review

R&D
R0C
R0R
R1
R1R
R21
R3
RA

RAC
RAD
RadSim
RAID
RAM
RAMP
RAS
RBD
RBS
RBST
RBV
R-C
RCA
RCA-EO
RCC
RCM
RCN
RCR
RCS
RD
RDAC
RDB
RDBMS
RDC
RDCS
RDPS
RDS
RDSS
RE
REC
REF
REL
REST
REQ
RF
RFA
RFC
RFI
RFID
RFO
RFP
RFQ
RFR
RFS
RG
RGB
RH
RHC
RHCP
RHS
RIDS
RIM
RIO
RIPL
RIS24
RITSO
RL
RLN
RLUT
RM
RMAN
RMB
RMD
RMF
RMM
RMP
RMR
RMS
RMSE
RMSEr
RMT
RN
RO
ROI
ROIC
ROLO
ROM
RPC
RPE
RPI
RPM
RPS
RR
RRAS
RRB
R-S
RSA
RSB
RSD
RSDO
RSDP
RSPP
RSR
RSS
R/T
RT
RTA
RTC
RTCS
RTF
RtoO
RTS
RTT
RTTM
RVM
RWA
RX
Research and Development
A stage of Radiometric Processing; Radiometric Calibration
A stage of Radiometric Processing; Radiometric Artifacts Collection
Release 1
A stage of Radiometric Processing; Cosmetic Changes
Resource 21
Release 3
Right Ascension or Risk Assessment
Real Application Cluster or Risk Assessment Code
Radiometric or Rapid Application Development
Radiometry Simulator
Redundant Array of Independent Disks
Random Access Memory or Responsibility Assignment Matrix or Resource Allocation Matrix
Radarsat Antarctica Mapping Project
Reliability, Availability, Serviceability
Risk Based Decision
Reflective Band Sensor or Risk Breakdown Structure
Role Based Security Training
Return Beam Vidicon
Resistor-Capacitor
Radio Corporation of America
Requirements, Capabilities, and Analysis for Earth Observations
Raw Computer Compatible
Resource Configuration Manager
Revision Control Number
Remote Controlled Repository
Reaction Control System
Requirements Document
Redundant Disk Array Controller
Requirements Database Baseline
Related Database Management System
Remote Desktop Connection
Raw Data Capture Subsystem
Raw Data Processing Subsystem
Raw Data Subsetter
RCC Data Subsetter or Raw Data Subsetting Subsystem
Requirements Engineer and Responsible Engineer
Recovery Time
Reference
Relative
Representational State Transfer
Service Request Message or Requirement
Radio Frequency
Request for Action
Request for Comments
Request for Information
Root File Identification
Request for Offer
Request for Proposal
Request for Quote
Request for Record or Run for Record
Radio Frequency System
Relative Gain
Red Green and Blue Color Value
Red-High
Right-Hand Circular
Right Hand Circularly Polarized
Right-Hand Side or Right-Hand SLO
Review Item Discrepancies
Risk Information Management Tool
Risks, Issues, and Opportunities
Risk Identification Prompt List
24-bit Raster Image
Regional IT Security Officer
Red-Low
Resource Load Network
Response Linearization Look Up Table
Requirements Management or Risk Manager or Resource Manager
Recovery Manager
Risk Management Board
Risk Management Database
Risk Management Framework
Risk Mitigation Maneuvers
Requirements Management Plan or Risk  Management Plan
Risk Management Record
Root-Mean-Square or Risk Management System
Root Mean Square Error
Radial Root Mean Square Error
Risk Management Tool
Random Noise
Receiving Officer
Return on Investment or Region of Interest
Read-Out Integrated Circuit
Robotics Lunar Observatory
Rough Order of Magnitude
Remote Procedure Call or Rational Polynomial Coefficient
Rational Publishing Engine
Rumpin, Indonesia Ground Station
Revolutions per Minute
Radiometric Processing Subsystem
Readiness Review
Routing and Remote Access Services
Reduced Resolution Browse
Reed-Solomon
Rivest-Shamin-Adleman
Remote Sensing Branch
Remote Sensing Division
Rapid Spacecraft Development Office
Rapid Spacecraft Development Office
Robotic System Protection Plan
Relative Spectral Responses
Reuse Subsystem or Really Simple Syndication or Rich Site Summary
Receive/Transmit
Real Time
Roof Top Antenna
Remote Telemetry and Command Unit
Relative Time Command Sequence
Rich Text Format
Research-to-Development-to-Operations
Relative Time Sequence
Round Trip Time
Requirements-To-Test Matrix
Requirements Verification Matrix
Reaction Wheel Assembly
Receive

S&O
SA

SA
SAA
SA-AC
SaaS
SAC
SADD
SAG
SAGUI
SA-IC
SAIC
SAM
SAMP
SAN
SANS
SAP
SA-PC
SAPMSO
SARR
SAS
SAT
SATA
SATO

SAW
SBAF
SBC
SBCG
SBG
SBM
SBRS
SBS
SBU
S/C
SC
SCA
SCAMA
SCAMA
SCC
SCD
SCDR
SCES
SCH
SCI
SCID
SCL
SCM
SCN
SCP
SCR
SCR
SCS
SCS
SCSI
SCTR
SD
SDAT
SDD
SDDS
SDF
SDLC
SDLT
SDM
SDMP
SDN
SDP
SDPS
SDR
SDS
SDU
SDVF
SDW
SE
SEB
SED
SEE
SEI
SEIT
SEL
SELC
SelfDef
SEM
SEMP
SET
SEU
SEV
SF
SFBME
SFC
SFCG
SFFT
SFTP
SGDAWG
SGI
SGICD
SGP4
SGS
Sg/SG6
SGT
SHA
SHC
SHS
SHSERR
SI
SIAT
SIC
SID
SIEM
SIFMT
SIG
SIP
SIPS
SIR
SIRCUS
SIRU
SIS
SISO
SISSE
SITL
SITP
SKMP
SL
SLA
SLAM
SLAT
SLATE
SLC
SLD
SLI
SLL
SLO
SLOC
SLP
SLPP
SLS
SM
SMA
SMAP
SMAT
SMC
SMD
SME
SMP
SMR
SMRD
SM RVM
SMS
SMSR
SN
SNAS
SNMP
SNR
SNUG
SO
SOA
SOAP
SOC
SOD
SOH
SOM
SON
SOO
SOP
SORN
SOS
SOW
SP
SPAOS
SPARC
SPDR
SPI
SPIM
SPIT
SPITL
SPL
SPOC
SPOT
SPR
SPSR
SPVM
SPVP
SQA
SQAP
SQL
SQMS
SQPSK
SQRT
SR
sr
SRB
SRD  
SRI
SRLUT
SRM
SRO
SRP
SRR
SRS
SRT
SRTM  
SRV
SS
SSA
SSCL
SSD
SSERB
SSG
SSH
SSHGS
SSI
SSIP
SSL
SSM
SSO
SSoH
SSOP
SSP
SSPA
SSP-MSO
SSPP
SSR
SSRR
ST
STC
STD
STDEV
STDMP
STDN
STE
STESR
STF
STIG
STIM
STK
STP
STR
STS
STSS
STV
SUI
SUM
SUN
SV
SvalSat
SVN
SVT
SVVP
S/W
SW
SWD
SWIR
SWOT
SZA
Search and Order
Spacecraft Analyst or Single Access or Systems Administrator
Storage and Archive Subsystem or System Architect
South Atlantic Anomaly
Storage Archive - Archive Cache
Software as a Service
Satellite Application Centre (South Africa)
System Algorithm Description Document
System Administrator Guide
Storage and Archive Graphical User Interface
Storage and Archive – Internal Cache
Science Applications International Corporation
Scan Angle Monitor or Storage Archive Manager
Software Acquisition Management Plan
Storage Area Network
System Administration, Networking, and Security Institute
Systems Applications and Products or Software Assurance Plan
Storage Archive - Processing Cache
Space Asset Protection Mission Support Office
Security Assessment Response Report
Serial Attached SCSI or Solar Array Simulator
Site Acceptance Testing
Serial Advanced Technology Attachment
Science Algorithms to Operations
Systems Analysis Workgroup
Spectral Band Adjustment Factor
Single Board Computer
System Build and Configuration Guide
Software Build Guide
Serena Business Manager
Santa Barbara Remote Sensing
Subsetter System
Sensitive But Unclassified
Spacecraft
Spacecraft or Science Campaign
Sensor Chip Assembly or Snow Covered Area
Switching, Conferencing, and Monitoring Arrangement
Station Conferencing and Monitoring Assembly
Stress Corrosion Cracking or System Control Center
Small Conversion Device
Spacecraft Critical Design Review
Station Contract Execution Summary
Contact Schedule Message
Software Configuration Item
Spacecraft Identifier
Signal Conditioning Unit - Lower Equipment Module
Software Configuration Management
Scan
Standard Controls Processor or Secure Copy Protocol
System Concept Review or Software Configuration Request
Standard Collection Request
Scan-Correlated Shift or Satellite Checkout Station
NOAA/IPO Space and Communications Segment
Small Computer Software Interface
Special Calibration Test Requirements
South Dakota or Scan Direction
Special Data Acquisition Tool
Software Design Document
Seamless Data Distribution System
Software Development File
System Development Life Cycle
Super DLT
Silo Data Manager
Software Development Management Plan
South Dakota Network
Software Development Plan or Science Data Production or Science Data Processing
Support Data Processing Subsystem or Science Data Processing Segment
System Design Review
Scientific Data Set
Service Data Unit
Software Development and Validation Facility
Seamless Data Warehouse
Systems Engineer or Systems Engineering
Source Evaluation Board
Software Engineering Department
Single-Event Effect or Science Execution Environment
Software Engineering Institute
System Engineer Integration and Test
Single-Event Latchup or Software Engineer Lead
System Engineering Lifecycle
Self-Defining CMDA format
Security Engineered Machine
Systems Engineering Management Plan
Systems Engineering Team
Single Event Upset - Anomaly Event
Severity or Sun-Earth-Vehicle angle
Service Framework
Short Form Brouwer Mean Element
Scene Framing Component
Space Frequency Coordination Group
Short Form Functionality Testing
SSH File Transfer Protocol
Space to Ground Data Acquisition Working Group
Silicon Graphics Incorporated or Shadnagar, India Ground Station
Space to Ground Interface Control Document
Simplified General Perturbations
Svalbard Ground Station or Svalsat Ground Station
Svaldbard Ground Station
Stinger Ghaffarian Technologies
Secure Hash Algorithm
Shutter Histogram Characterization
Second Half Scan
Second Half Scan Error
Searchable Inventory or Space Imaging or Science Instrument or Système International
Spectral Image Annotation Tape
Spacecraft Identifier Code
Searchable Inventory Database or System ID
Security Information and Event Management
Scene to Interval to File Mapping Table
Signaling
Standard Internet Protocol
Science Investigation Processing System
Scientific Investigations & Research or Survey Investigation and Research
Spectral Irradiance and Radiance responsively Calibration using Uniform
Scalable Inertial Reference Unit
Science Information System or Spacecraft Interface Simulator
Subsystem Information System Owner
Senior Information System Security Engineer
Single Interval-In-The-Life
Software Integration Test Plan
System Key Management Plan
Scan Line
Service Level Agreement or Scan Line Artifact
Storage Location Allocation Manager
Spacecraft Location and Attitude Tape
System Level Automation Tool for Enterprises
Scan Line Corrector or Software Development Life Cycle
Scan Line Data
Sustainable Land Imaging
Scan Line Length
Scan Line Offset
Standard Lines of Code
Service Location Protocol
Summary Level Planning Package
Scan Line Start
Schedule Manager or Scan Mirror
Safety and Mission Assurance or S-Band Multiple Access
Safety and Mission Assurance Plan
System, Model, and Analysis Tool
Subsetter Monitor and Controllers
Stored Mission Data or Science Mission Directorate
Scan Mirror Electronics or Subject Matter Expert
Software Maintenance Plan or Software Management Plan
Staff Management Request
Science and Mission Requirements Document
Science and Mission Requirements Verification Matrix
System Management Server
Safety and Mission Success Review
Space Network
Space Network Access System
Simple Network Management Protocol
Signal-to-Noise Ratio
Space Network User’s Guide
Search and Order
Service-Oriented Architecture or Satellite Operator Agency
Simple Object Access Protocol
Satellite Operations Center
Seconds Of Day
State of Health
Space Oblique Mercator
Statement of Need
Statement of Objectives
Standard Operating Procedure
System of Record Notice
Spacecraft/Observatory Simulator
Statement of Work
Special Publication
Standard Product Automatic Ordering System
Scalable Processor Architecture
Spacecraft Preliminary Design Review
Schedule Performance Index
SPOT Image
Systems Performance Improvement Team
Scheduling Period In The Life
Software Project Lead
Service-Oriented Architecture (SOA) Proof of Concept or Security Point of Contact
Satellite Pour l'Observation de la Terre (Satellite for Earth Observation)
Software Problem Report
System Pre-Ship Review
System Performance Verification Matrix
System Performance Verification Plan
Software Quality Assurance
Software Quality Assurance Plan
Structured Query Language
Software Quality Management System
Staggered Quadrature Phase Shift Keying
Square Root
System Review or Surface Reflectance
steradian
Schedule Review Board or Standing Review  Board
System Requirements Document
Standard Robot Interface
Spectral Radiance Look Up Table
Silo Resource Manager
Systems Review Office
Systems Review Plan
System Readiness Review or System Requirements Review or Software Requirements Review
Software Requirements Specification or System Requirements Specification
Systems Review Team or Siracha, Thailand Ground Station
Software Requirements Traceability Matrix or Shuttle Radar Topography Mission
SUBETTER_REQUEST_View
Space Segment or System Support or Signal Strength
S-Band Single Access or Space Situational Awareness
Standard System Control List
Subsystem Design Document
Systems Support Engineering Review Board
System Support Group
Secure Shell
Secure Shell Gateway Service
Sensitive Security Information
System Safety Implementation Plan
Secure Socket Layer
Scene Select Mechanism or Scene Select Mirror
Single Sign-On
Stored State of Health
Security Standard Operating Procedure
System Security Plan or Satellite Support Plan
Solid State Power Amplifier
Space System Protection - Mission Support Office
Systems Safety Program Plan
Solid State Recorder or Software Specification Review
Spacecraft System Requirements Review
System Test
System Test Case
Standard
Standard Deviation
Simulated and Test Data Management Plan
Spaceflight Tracking and Data Network
System Test Equipment
System Test Execution Summary Report
System Transfer Function
Security Technical Implementation Guide
Stimulus
StorageTek
System Test Plan
System Test Report or Special Task Report
Scene Transmit Schedule
Synchronize to Secondary Server
Spacecraft Transportation Vechicle
Subsetter Operator User Interface
Summary
Sun Microsystems, Inc.
Space Vehicle, Schedule Variance, or Subversion
Svalbard Satellite Station
Sun-Vehicle-Normal angle or Subversion
Site Verification Test
System Verification and Validation Plan
Software
Switch or Software
Software Development
Short Wavelength Infrared
Strength, Weakness, Opportunity, and Threat
Solar Zenith Angle

T
T1
T2
T382
T&A
T&C
TAI
TAMR
TAP
TAR
TAT
TB
TBC
TBD
TBR
TBS
TC0AOS
TC1AOS
TC
TCDC
TDEA
TCP
TCPI
TCP/IP
TCS
TCXO

TDF
TDI
TDR
TDRS
TDRSS
TDT
TDY
TE
TEM
TERSS
TESR
TFA
TFF
tHC
TIC
TID
TIFF

TIM
TIR
TIRS
TIRS-2
TIS
TLE
TLM
TLS
TM
TM-A
TMACS
TMIAS
TML
TM-R
TMR
TMS
TMSR
TMSS
TNOS
TNS
TO
TOA
TOR
TP
TPL
TPM
TPS
TQCM
TRAM
TRAMAOS
TRD
TREES
TRN
TRR
TRT
TSI
TSR
TSSC
TST
TT
TT&C
TT&E
TTF
TTL
TTMS
TTOR
TTPs
TURFTS
TUTR
T/V
TVAC
TWITL
TWM
TWTA
Temperature
Tower 1
Tower 2
Triangular 382
Trending and Analysis or Trending & Archive
Telemetry and Command
International Atomic Time
Telemetry Archive Metrics Report
Technical Assessment Panel
Tape Archiver
Turn-Around-Time
Terabyte
To Be Confirmed
To Be Determined
To Be Resolved or To Be Reviewed or To Be Refined
To Be Submitted or To Be Supplied or To Be Specified or To Be Scheduled
TIRS Collection 0 Automatic Ordering System
TIRS Collection 1 Automatic Ordering System
Test Case
Total Cloud Cover
Triple Data Encryption Algorithm
Transmission Control Protocol or Technology Control Plan
To Complete Performance Index
Transmission Control Protocol/Internet Protocol
Thermal Control Subsystem
Temperature-Compensated Crystal Oscillator
Tracking Data Formatter or Time-Dependent Factor
Time Delay Integration
Test Discrepancy Report
Tracking and Data Relay Satellite
Tracking and Data Relay Satellite System
Terrestrial Dynamical Time
Temporary Duty
Test Engineer
Technical Exchange Meeting
Tasmanian Earth Resources Satellite Station Consortium
Test Execution Summary  Report
Two-Factor Authentication
TIRS Free Flyer
The Hammers Company
Trusted Internet Connection
Total Ionizing Dose
Tagged Image File Format
Technical Interchange Meeting or Technical Issue Memorandum
Thermal Infrared
Thermal Infrared Sensor or Thermal Infrared Scanner
Thermal Infrared Sensor -2
Thermal Infrared Sensor
Two-Line Element
Telemetry
Transport Layer Security
Thematic Mapper or Traverse Mercator or Task Manager
Thematic Mapper - Archive Format
Thematic Mapper and Multispectral Scanner Archive Conversion System
Thematic Mapper Image Assessment System
Total Mass Loss
Thematic Mapper - Raw Format
Thermal Mapper Raw
Training Management System
TSSC Monthly Status Report
TM Subsetter
Tromoso Network Operations Centre
Transport Network Substrate
Task Order or Terrain Occlusion
Top of Atmosphere
Terms of Reference
Task Plan
Telemetry Packetization Layer
Technical Performance Measures
Test Procedure Specification
Thermoelectric Quartz Crystal Microbalanc
Tracking, Routing, and Metrics
Tracking, Routing, and Metrics Automatic Ordering System
Technical Requirements Document
Tropical Ecosystem Environment Observations by Satellite
Technical Redirection Notice
Test Readiness Review
Transition Readiness Test
Honeywell Technology Solutions Inc.
Technical Service Request
Technical Support Services Contract
Technical Support Team
Terrestrial Time
Telemetry, Tracking, and Control
Test, Training, and Exercise
TIRS Test Facility
Transistor-Transistor Logic
TSSC Task Management System
Transition To Operations Review
Tactics, Techniques, and Procedures
TDRS Users RF Test Set
Tunable Universal Track Receiver
Thermal/Vacuum
Thermal Vacuum
Total WRS-2 In The Life
Task and Work Management
Traveling-Wave Tube Amplifier

UAC
UAF
UAR
UB
U/C
UDP
UDT
UG
uhd
UI
UIC
UID
UIS
U/L
UL
UM
UML
UNEP
UNIX
unixODBC
U/P
UP
UPE
UPS
UQPSK
UR
URL
URP
URS
US
USAF
USAID
USB
USC
USDA
USG
USGS
USML
USNO
USPS
USSTRATCOM
UT
UT1
UTC
UTM
User Account Control
University of Alaska, Fairbanks
Update as Required
Undistributed Budget
Up Converter
Upper Data Point or User Datagram Protocol
UDP Data Transfer
User's Guide
User's Home Directory
User Interface
User Interface Compile
Unique Identifier
USGS Inventory Server
Uplink
Upper Left
Unified Messaging
Unified Modeling Language
United Nations Environment Programme
Bell Laboratories trademark for operating system language and time sharing
Unix Open Database Connectivity
Uplink Processor
User Portal System
User Portal Element
Uninterruptible Power Supply or Universal Polar Stereographic
Unbalanced Quadrature Phase-Shift Keying
Upper Right or User Request
Uniform Resource Locator
User Request Parameters
User Registration System
United States
United States Air Force
U.S. Agency for International Development
Universal Serial Bus
United States Code
U.S. Department of Agriculture
U.S. Government
U.S. Geological Survey
United States Munitions List
U.S. Naval Observatory
U.S. Postal Service
U.S. Strategic Command
Universal Time or Unit Test
UTC Corrected
Universal Time Code or Coordinated Universal Time
Universal Transverse Mercator

V&V
VA
VAC
VAFB
VAL
VAP
VAR
VC
VC63
VCA
VCDU
VCID
VCLC
VDD
VDP
VER
VF
VIIRS
VIS
VisID
VLAN
VLUT
VM
VMS
VNIR
VO
VOI
VOIP
VPN
VQA
VRM
VRP
VRS
VSWIR
VTL
VTP
VVP
Verification and Validation
Veteran Administration
Variance at Completion
Vandenburg Air Force Base
Validation
Value Added Processor
Value-Added Resellers or Variance Analysis Report
Virtual Channel
Virtual Channel 63
Virtual Channel Access
Virtual Channel Data Unit
Virtual Channel Identifier or Virtual Channel Identification
Virtual Channel Link Control
Version Description Document
Validation Data Products
Version
Valley Forge
Visible Infrared Imager / Radiometer Suite
Visual Information Systems
Visual Identification
Virtual Local Area Network
Vendor Look Up Table
Version Manager
Virtual Memory Storage
Visible and Near Infrared
Verification Owner
Value of Information
Voice Over Internet Protocol
Virtual Private Network
Visual Quality Assurance
Verification Requirements Matrix
Video Reference Pixel
Vertical Resampling Space
Visible to Short Wavelength Infrared
Verification Tracking Log
Verification Test Procedures
Verification and Validation Plan

W3C
WA
WAD
WAN
WB
WBDR
WBM
WBS
WBV
WBVT
WC
WCS
WDCD
WELD
WFS
WG
WGCV
WGS
WGS84
WILMA
WIP
WITL
WLS
WMS
WO
WORS
WOTIS
WP
WPS
WR
WRS
WRS-2
WRS2TT
WRS2TTT
WSC
WSDL
WSGT
WS-I
WVTCS
WWW
World Wide Web Consortium
Work Authorization
Work Authorization Document
Wide Area Network
Wideband
Wideband Downlink Report
Wide-Band Module
Work Breakdown Structure
Wide Band Video
Wide Band Video Tape
Worst Case
Web Coverage Services
Wideband Data Capture Device
Web-Enabled Landsat Data
Web Feature Services
Working Group
Working Group for Calibration and Validation
World Geodetic System or Wallops Ground Station
World Geodetic System 1984
Wide Long Term Multi-Satellite Archive
Work In Progress
WRS2-In-The-Life
Weighted Least Square
Web Mapping Services
Work Order
Wallops Orbital Tracking Station
Wallops Orbital Tracking Information Systems
Work Plan or Work Package
Wallops Ground Station
Western Range
Worldwide Reference System
Worldwide Reference System-2
Worldwide Reference System-2 to Time Translation
Worldwide Reference System-2 to Time Translation Table
White Sands Complex
Web Service Definition Language
White Sands (NASA) Ground Terminal
Web Services Interoperability
Wideband Video Tape Conversion System
World Wide Web

XIB
XML
XS
XSD
XTX
Transmitter Interface Board
Extensible Markup Language
Multispectral SPOT Sensor
XML Schema Definition
X-Band Transmitter

YGC
YH
YL
YSF
YTD
Yaw Gyro Compassing
Yellow-High
Yellow-Low
Yaw Steering Frame
Year-To-Date

Z
ZB
ZFS
Zulu time (same as GMT)
Zettabyte
Zettabyte File System

0R
6H
6L
6S
Zero Reformatted Data
Band 6 - high gain
Band 6 - low gain
Second Simulation of a Satellite Signal in the Solar Spectrum

 

 

 

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Landsat represents the world's longest continuously acquired collection of space-based moderate-resolution land remote sensing data. Four decades of imagery provides a unique resource for those who work in agriculture, geology, forestry, regional planning, education, mapping, and global change research. Landsat images are also invaluable for emergency response and disaster relief.

 

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