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Proceedings Paper

Calibration of the visible and near-infrared channels of the advanced very high resolution radiometer (AVHRR) after launch
Author(s): C. R. Nagaraja Rao; Jianhua Chen
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Paper Abstract

The relative degradation in time of the visible(channel 1: 0.58-0.68jim) and nearinfrared(channel 2: 0.72-1.lpm) channels of the Advanced Very High Resolution Radiometer(AVHRR), onboard the NOAA polar-orbiting operational environmental satellites(POES), has been determined, the southeastern Libyan desert(21-23°N latitude; 2829° E longitude) as a time-invariant calibration target. A statistical procedure was used on the reflectance data for the two channels from the B3 data of the International Satellite Cloud Climatology Project(ISCCP) to obtain the degradation rates for the AVHRRs on NOAA-7, -9, and -11 spacecraft. The degradation rates per year for channels 1 and 2 are respectively: 3.6% and 4.3%(NOAA-7); 5.9% and 3.5%(NOAA-9); and 1.2% and 2.0%(NOAA-11). The use of the degradation rates thus determined, in conjunction with t1absolute" calibrations obtained from congruent aircraft and satellite measurements, in the development of correction algorithms is illustrated with the AVHRR on the NOAA-9 spacecraft.

Paper Details

Date Published: 15 November 1993
PDF: 11 pages
Proc. SPIE 1938, Recent Advances in Sensors, Radiometric Calibration, and Processing of Remotely Sensed Data, (15 November 1993); doi: 10.1117/12.161571
Show Author Affiliations
C. R. Nagaraja Rao, National Oceanic and Atmospheric Administration (United States)
Jianhua Chen, SM Systems and Research Corp. (United States)

Published in SPIE Proceedings Vol. 1938:
Recent Advances in Sensors, Radiometric Calibration, and Processing of Remotely Sensed Data
Pat S. Chavez Jr.; Robert A. Schowengerdt, Editor(s)

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