Calibration and validation are important aspects of any remote sensing system. The calibration of the Landsat sensors is supported by preflight, post launch-onboard, and ground reference data.
Calibration parameter files are provided for all sensors below, along with notices that describe any changes that may have been made to the files and affect data products.
Bias parameter files are also available for Landsat 8 satellite data products.
Definitive Ephemeris is useful in the geometric correction of Landsat 4-5 Thematic Mapper and Landsat 7 data.
Calibration Parameter files (CPF)
Calibration Parameter Files (CPF) provide radiometric and geometric coefficients needed for processing of raw, uncorrected Landsat image data. Over 15,000 coefficients are issued to span distinct timeframes and are updated with improved calibration coefficients.Landsat 8 (L8) OLI
Landsat 8 (L8) Operational Land Imager (OLI) and Thermal Infrared Sensor (TIRS) Calibration Notices
Landsat 7 (L7) Enhanced Thematic Mapper Plus (ETM+)
Landsat 4-5 Thematic Mapper (TM)
Landsat 1-5 Multi-Spectral Scanner (MSS)
Bias Parameter Files (BPF) supply radiometric correction parameters during Level 1 processing of Landsat 8 data products.
Definitive Ephemeris is used is used to geometrically correct Landsat 4-5 Thematic Mapper and Landsat 7 data. An ephemeris is a set of data that provides the assigned places of a celestial body (including a manmade satellite) for regular intervals. In Landsat 7, definitive ephemeris shows the position and velocity of the satellite in one-minute intervals. Section 11.3.7 of the Landsat 7 Data Users Handbook provides more details on definitive ephemeris.Download Definitive Ephemeris for Landsat 7 and Landsat 5