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Proceedings Paper

Absolute Calibration Of The SPOT-1 HRV Cameras
Author(s): G Begni; M C Dinguirard; R D Jackson; P N Slater
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Paper Abstract

The pre-flight and on-board in-flight absolute radiometric calibrations of the two HRV cameras on SPOT-1 are briefly described. The results of the in-flight calibrations at White Sands, New Mexico are presented in detail and compared to the other methods. The ratio of calibration coefficients for the two SPOT-1 HRVs was obtained from a histogram match of a scene, imaged simultaneously by the two cameras. This was compared to the ratio of the calibration coefficients from the White Sands results. The ratios are in good agreement, < 3% in three bands, the exception is multispectral band 2 which shows a 7% difference. The histogram result and a comparison with spectral radiances measured from an altitude of 3000 m indicate that, at the time and under the conditions that the calibrations were madelthe specification for a ± 10% RMS absolute calibration uncertainty for the SPOT-1 HRVs had been met. The White Sands and histogram ratio results were used to update the calibration of the on-board suncalibrator system for the HRVs.

Paper Details

Date Published: 25 November 1986
PDF: 11 pages
Proc. SPIE 0660, Earth Remote Sensing Using the Landsat Thermatic Mapper and SPOT Sensor Systems, (25 November 1986); doi: 10.1117/12.938568
Show Author Affiliations
G Begni, Centre National d'Etudes Spatiales (France)
M C Dinguirard, Centre d'Etudes et de Recherches de Toulouse (France)
R D Jackson, U.S. Department of Agriculture (United States)
P N Slater, University of Arizona (United States)

Published in SPIE Proceedings Vol. 0660:
Earth Remote Sensing Using the Landsat Thermatic Mapper and SPOT Sensor Systems
Philip N. Slater, Editor(s)

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