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Changes to the Landsat 7 Enhanced Thematic Mapper Plus (ETM+) from prelaunch to December 2001 are noted on the table below.

CPF Changes Date IAS Changes
-Prelaunch CPF values calculated from tests at Santa Barbara Remote Sensing (SBRS) Santa Barbara and Valley Forge. -Q1-
1999
-(prelaunch)
-IAS 3.2 Released
4/15/1999
Mirror_Parameters
Histogram/Starting_pixel
Window_Samples
B6_View_Coeffs
Thermistor_Coeffs
Thermal_Constants
-Q2-
1999
 
Detector_Noise (B8)
Detector_Biases_B6
ACCA_Thresholds
ACCA_Biases
IN_Thresholds
Scaling_Parameters
MTF_Compensation
-Q3-
1999
-IAS 3.2.1 Released
8/25/1999
Detector_gains
Detector_Biases_B6
ACCA_Biases
MTF_Compensation
B6_view_coeffs
Mirror_Parameters
ACCA_Bias

Emergency CPF Release:
Band 6 Gain Switch Event
11/24/1999 - 12/08/1999

-Q4-
1999
-IAS 3.2.2 Released 10/20/1999
-Destriping fixed.
Partial Aperture Solar Calibrators (PASCs) enabled.
Payload Correction Data (PCD) Attitude preprocessing algorithms updated.
Upgrade to Oracle 7.3.4

IAS 4.0 Released
11/24/1999

Det_Shutter_noise
IN Thresholds

CPF Structure Changes Made
2/16/2000
added Histogram/Det_Shutter_Noise
added Impulse_Noise/IN_SIGMA_Threshold
added Attitude_Parameters/IMU_Drift_Biases
enabled per-band Striping correction parameters
 

-Q1-
2000
-IAS 4.1 Released
2/16/2000
Band 6 Bias Calculation fixed.
Relative Gain correction fixed.
Upgrade to IRIX 6.5
Mirror_parameters
Detector_gains
Striping references
-Q2
2000
 
Mirror_parameters
Detector_gains
ACCA_Thresholds
Scaling_parameters

Emergency CPF Release:
CSA Alignment Change
7/19/2000

-Q3-
2000
-IAS 4.2 Released
7/12/00
IMU_Drift_Bias parameters enabled.
Per-band Striping correction enabled.
Per-band Relative Gain calculation enabled.
Can now use Definitive Ephemeris
 
  -Q4-
2000
-IAS 4.3 Released
10/31/00
Full Aperture Solar Calibrator (FASC) processing enabled.
Band 6 Random Noise calculation fixed.
FDF Ephemeris fixed.
 
ACCA_Thresholds
Impulse_noise thresholds
- Q- 1-
2001
-IAS 4.4 Released
2/6/01
FASC processing fixed.
IN_Sigma_Threshold parameters enabled.
  - Q2-
2001
-IAS 4.5 Released
4/3/01
Zero-frequency Coherent Noise (CN) eliminated.
FASC processing fixed.
Det_Shutter_Noise parameters enabled.
Mission Operations Center (MOC) Auto-generated PASC Requests.

IAS 5.0 Released
5/31/2001

Detector Gains (B6)
Detector_Biases_B6
ACCA_Biases
-Q3
2001
 
Attitude_Parameters
Detector Gains (B7)
Bias Locations
MTF_Compensation
-Q4
2001
-IAS 5.1 Released
10/9/00
PASC Glint numbering corrected.
Geographic Tagged Image File Format (GEOTiff) and FastL7 output enabled.
Upgraded to Oracle 8.1.7.