Radiometric calibration of Landsat Thematic Mapper
Absolute calibration of satellite-acquired data is essential for quantification of scientific studies and a variety of image- processing applications. This paper describes a multiyear, on-orbit radiometric calibration of the Landsat Thematic Mapper (TM). Primary emphasis was placed on TM band 6 (thermal) calibration, but selected reflectance-band calibration measurements were also made. Twenty-five Landsat TM coverages were acquired, and included day, night, and seasonal scenes at several geographical locations. Concurrent with Landsat overpasses, thermal and reflectance field and local meteorological (surface and radiosonde) measurements were collected. At-satellite (uncorrected) radiances and temperatures for water and non-water land cover were compared to ground truth (GT) measurements after making adjustments for atmospheric (using LOWTRAN), mixed-pixel, and emissivity effects. Results indicate that for well-characterized water features, TM band 6 average corrected temperature determinations using local radiosonde data for atmospheric adjustments are within less than or equal to0.6/degree/C of GT temperature determinations. For non-water features, TM band 6 derived temperatures are within 1/degree/C of GT temperature determinations, if appropriate emissivity adjustments are made. Corrections using non-local radiosonde data resulted in errors as large as 12/degree/C. Corrections using the US Standard atmosphere gave temperature values within 1 to 2/degree/C of GT. The average uncertainty for field instruments was +-0.2/degree/C; average uncertainty for Landsat TM corrected temperature determinations was +-0.4/degree/C. A cross-calibration of TM band 6 and the Advanced Very High Resolution Radiometer (AVHRR) for a Landsat overpass gave similar temperature results. 15 refs., 3 figs., 5 tabs.
- Research Organization:
- Pacific Northwest Lab., Richland, WA (USA)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 6860392
- Report Number(s):
- PNL-SA-16165; CONF-8808135-1; ON: DE88015927
- Resource Relation:
- Conference: NASA landsat workshop, Greenbelt, MD, USA, 22 Aug 1988; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
IMAGE PROCESSING
CALIBRATION
LANDSAT SATELLITES
MAPS
NUMERICAL DATA
REFLECTIVITY
SOILS
THERMAL ANALYSIS
WATER
DATA
HYDROGEN COMPOUNDS
INFORMATION
OPTICAL PROPERTIES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PROCESSING
SATELLITES
SURFACE PROPERTIES
580203* - Geophysics- Geophysical Survey Methods- (1980-1989)