Impact of radiance variations on satellite sensor calibration
Abstract
The intercalibration of digital data from different sensors depends on systematic and random variations in factors controlling recorded radiance. Theoretical expressions are presented which describe the impact of random variations in those factors which control radiance incident on the sensor. Means of measuring or estimating the impact of random variations on intercalibration factors are discussed. Means of detecting and calibrating for systematic effects are also discussed. The optical-reflective, middle-infrared, and thermal infrared regions of the spectrum are considered. An example is presented whereby NOAA-7 and NOAA-8 advanced very high resolution radiometer (AVHRR) radiance data, obtained over the same test fields, are shown to depend on the differences in view angles used by the two satellites.
- Publication:
-
Applied Optics
- Pub Date:
- April 1987
- DOI:
- 10.1364/AO.26.001264
- Bibcode:
- 1987ApOpt..26.1264D
- Keywords:
-
- Calibrating;
- Radiance;
- Radiation Effects;
- Satellite Instruments;
- View Effects;
- Advanced Very High Resolution Radiometer;
- Digital Data;
- Noaa Satellites;
- Variability;
- Spacecraft Instrumentation;
- SENSORS;
- RADIOMETRY;
- SATELLITES