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3 October 1998 Methods for the calibration of SPOT4 HRVIR and vegetation
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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.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kurtis J. Thome, John Henry LaMarr, Karen Scott, and Christine Gustafson-Bold "Methods for the calibration of SPOT4 HRVIR and vegetation", Proc. SPIE 3439, Earth Observing Systems III, (3 October 1998);

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