Landsat Missions
The files below provide daily estimates for the historical radiometric internal calibrator gain (GIC), internal calibrator bias (BIC), processing gain (AlphaIC), and processing offset (BetaIC) coefficients for reflective bands 1-5 and 7 that were used by the National Landsat Archive Production System (NLAPS) in Landsat 5 (L5) Thematic Mapper (TM) product generation before the revised calibration procedure was implemented on May 5, 2003. Each of these files contain nine (3+6) columns. The first three columns are mission time related and represent Day Since Launch (DSL), Decimal year since launch, and the Day of the Year (DOY), respectively. The next six columns (one for each reflective band, 1-5 and 7) list the band average time-dependent calibration coefficients generated from the NLAPS trends.
Additionally, a file provides daily estimates for gain and offset used by NLAPS for the thermal band calibration (B6IC). This file has five columns. As for the reflective bands, the first three columns represent DSL, Decimal year since launch, and DOY, respectively. The remaining two columns represent the gain and offset, respectively.
For the reflective bands, these files can be used to recalibrate the L5 TM data processed before May 5, 2003, or to remove the lamp regression calibration and apply the gain and offset that reflect the current understanding of the system. The band 6 file could potentially be used as a look-up table for gain and offset. The thermal band does not require recalibration, but there could be an occasion that the raw data are available and these tables would give the user the information needed to generate a calibrated product without needing the calibration file.
| LUT Version | Release Date | Download File |
|---|---|---|
| L5GIC19840301_20010723.01.txt | Jul 9, 2008 | Download |
| L5BIC19840301_20010723.01.txt | Jul 25, 2008 | Download |
| L5B6IC19840301_20080205.01.txt | Jul 9, 2008 | Download |
| L5AlphaIC19840301_20010723.01.txt | Jul 25, 2008 | Download |
| L5BetaIC19840301_20010723.01.txt | Jul 25, 2008 | Download |
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://landsat.usgs.gov
Page Contact Information: Ask Landsat
Page Last Modified: 12/30/10 11:35 am
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