SPOT calibration of blue and green channels using Rayleigh scattering over clear oceans

Eric Dilligeard; Xavier Briottet; Jean Luc Deuze; Richard P. Santer

doi:10.1117/12.265450

27 January 1997 SPOT calibration of blue and green channels using Rayleigh scattering over clear oceans

Eric Dilligeard, Xavier Briottet, Jean Luc Deuze, Richard P. Santer

Proceedings Volume 2957, Advanced and Next-Generation Satellites II; (1997) https://doi.org/10.1117/12.265450
Event: Satellite Remote Sensing III, 1996, Taormina, Italy

Abstract

Rayleigh scattering targets over clear oceans under large solar and viewing angles have proved their efficiency to calibrate remote sensing instruments in the blue channels. To obtain a good accuracy, this method needs an evaluation of the different contributors participant in the total TOA signal: aerosol, atmospheric conditions, foam, water reflectance. The near infrared is used to estimate the aerosol content which is after transfered in the band to be calibrated depending on the considered aerosol type. Atmospheric conditions and foam are evaluated with ECMWF data: water vapor content, surface pressure, wind speed. Two methods are described for the spectral transfer of the aerosol optical thickness and compared using different SPOT acquisitions: one using the absolute calibration coefficient and the other interband calibration coefficient. The absolute calibration coefficients are computed in the blue and green channels of SPOT3.

Citation Download Citation

Eric Dilligeard, Xavier Briottet, Jean Luc Deuze, and Richard P. Santer "SPOT calibration of blue and green channels using Rayleigh scattering over clear oceans", Proc. SPIE 2957, Advanced and Next-Generation Satellites II, (27 January 1997); https://doi.org/10.1117/12.265450

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