Sensitivity analysis and validation plans for the retrieval of surface reflectance from ASTER

A look-up table approach is planned for the atmospheric correction of ASTER data in the solar reflective region. As part of the work to develop this atmospheric correction a sensitivity analysis of top-of-the-atmosphere radiances to changes in aerosol properties has been done. The results presented here use a Gauss-Seidel iteration radiative transfer code to examine effects of changes in aerosol parameters on retrieved surface reflectance. For reflectances greater than 0.1, the surface reflectance retrieval is most sensitive to changes in the aerosol complex index of refraction. At low reflectances, the retrieval is most sensitive to the aerosol scattering optical depth and size distribution. The impact of these results in determining a validation method is discussed.

[1]  P. M. Teillet,et al.  An algorithm for the radiometric and atmospheric correction of AVHRR data in the solar reflective channels , 1992 .

[2]  Stuart F. Biggar,et al.  Review of SPOT-1 and -2 calibrations at White Sands from launch to the present , 1993, Defense, Security, and Sensing.

[3]  M. S. Moran,et al.  Obtaining Surface Reflectance Factors from Atmospheric and View Angle Corrected SPOT-1 HRV Data , 1990 .

[4]  Vincent J. Realmuto,et al.  The advanced spaceborne thermal emission and reflectance radiometer (Aster) , 1991, Int. J. Imaging Syst. Technol..

[5]  Yoram J. Kaufman,et al.  The atmospheric effect on the separability of field classes measured from satellites , 1985 .

[6]  Robert S. Fraser,et al.  The effect of the atmosphere on the classification of satellite observations to identify surface features , 1977 .

[7]  Yasushi Yamaguchi,et al.  Scientific basis of ASTER instrument design , 1993, Defense, Security, and Sensing.

[8]  Piers J. Sellers,et al.  Inferring hemispherical reflectance of the earth's surface for global energy budgets from remotely sensed nadir or directional radiance values , 1985 .

[9]  M. S. Moran,et al.  Reflectance- and radiance-based methods for the in-flight absolute calibration of multispectral sensors , 1987 .

[10]  Stuart F. Biggar,et al.  In-flight radiometric calibration of Landsat-5 Thematic Mapper from 1984 to the present , 1993, Defense, Security, and Sensing.

[11]  Carol J. Bruegge,et al.  Calibrated intercepts for solar radiometers used in remote sensor calibration , 1991, Defense, Security, and Sensing.