Vicarious calibration of VNIR/SWIR bands of ASTER
Vicarious calibration of VNIR/SWIR bands of ASTER
Vicarious calibration of VNIR/SWIR bands of ASTER
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Test site characteristicsTest site selection is the most important choice indetermining the uncertainties in reflectance-basedapproachP Goal is to understand the interaction between the surfaceand the atmosphereP Test site characteristics! High, flat spectral reflectance and nearly lambertian! Large geographic size with spatial uniformity! Low aerosol loading (high elevation)! Accessible and historical understanding <strong>of</strong> siteP Other choices such as radiative transfer code, aerosolmodel, instrumentation are also important! However, consistency <strong>of</strong> these will give good precision! Site selection will more dramatically impact theuncertainties and can increase the importance <strong>of</strong> theabove items
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