On-orbit calibration of a multi-spectral satellite sensor using a high altitude airborne imaging spectrometer

Details On-orbit calibration of a multi-spectral satellite sensor using a high altitude airborne imaging spectrometer On-orbit calibration of a multi-spectral satellite sensor using a high altitude airborne imaging spectrometer

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997adspr..19.1387g&link_type=abstract

Advances in Space Research, Volume 19, Issue 9, p. 1387-1398.

Computer Science

Performance

2

Scientific paper

Earth-looking satellite sensors must be calibrated in order to quantitatively measure and monitor components of land, water and atmosphere of the Earth System. The inevitable change in performance due to the stress of satellite launch requires that the calibration of a satellite sensor be established and validated on-orbit. A new approach to on-orbit satellite sensor calibration has been developed using the flight of a high altitude calibrated airborne imaging spectrometer below a multi-spectral satellite sensor. This strategy was implemented on August 27, 1992, for the Optical Sensor (OPS) on board the Japanese Earth Resources Satellite-1 (JERS-1) using NASA's Airborne Visible-Infrared Imaging Spectrometer (AVIRIS). Calibrated AVIRIS spectral radiance data were acquired beneath OPS. OPS has eight spectral filters and eight detector arrays with 4096 elements to measure each of eight spectral bands in the solar reflected spectrum across a 75 km ground swath. AVIRIS data were spectrally convolved and spatially registered to the OPS data in the overlapping image area measured by the two sensors. The convolved and registered AVIRIS radiance data were used to determine the 32,768 on-orbit radiometric calibration coefficients required for calibration of the full 75 km swath and eight spectral bands of OPS.

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