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Proceedings Paper

Methods for the calibration of SPOT4 HRVIR and vegetation
Author(s): Kurtis J. Thome; John Henry LaMarr; Karen Scott; Christine Gustafson-Bold
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Paper Abstract

The Remote Sensing Group at the University of Arizona has provided vicarious calibration results for all three SPOT- series satellites carrying the HRV cameras. The HRVs are high spatial-resolution sensors that are well-suited to the reflectance-, irradiance-, and radiance-based methods. The SPOT-4 platform has a similar sensor, the HRVIR camera, that now includes a band at approximately 1630 nm. The SPOT-4 platform also has a new sensor, Vegetation, that has much lower spatial resolution than the HRVIR sensor, and thus poses a challenge for vicarious calibration. This work presents the modifications that must be made to reflectance- , irradiance-, and radiance-based approaches in order to use them for the Vegetation. This paper also describes a proposed procedure for such a calibration along with an uncertainty analysis due to spectral mismatch and spatial misregistration. The work also shows how such cross- calibration can be done using a cross-calibration between Landsat-5 TM and SPOT-3 HRV using White Sands Missile Range. The results show TM can be cross-calibrated using HRV to provide calibration coefficients which are within 1 percent of those obtained from a reflectance-based approach.

Paper Details

Date Published: 3 October 1998
PDF: 11 pages
Proc. SPIE 3439, Earth Observing Systems III, (3 October 1998); doi: 10.1117/12.325650
Show Author Affiliations
Kurtis J. Thome, Optical Sciences Ctr./Univ. of Arizona (United States)
John Henry LaMarr, Optical Sciences Ctr./Univ. of Arizona (United States)
Karen Scott, Optical Sciences Ctr./Univ. of Arizona (United States)
Christine Gustafson-Bold, Optical Sciences Ctr./Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 3439:
Earth Observing Systems III
William L. Barnes, Editor(s)

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