Methods for the calibration of SPOT4 HRVIR and vegetation

Kurtis J. Thome; John Henry LaMarr; Karen Scott; Christine Gustafson-Bold

doi:10.1117/12.325650

3 October 1998 Methods for the calibration of SPOT4 HRVIR and vegetation

Kurtis J. Thome, John Henry LaMarr, Karen Scott, Christine Gustafson-Bold

Proceedings Volume 3439, Earth Observing Systems III; (1998) https://doi.org/10.1117/12.325650
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

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.

Citation Download Citation

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); https://doi.org/10.1117/12.325650

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