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AST_07XT reflectance values from DN values
Posted: Mon Aug 31, 2020 5:44 am America/New_York
How can I convert the integer DN values of AST_07XT products to reflectance
in the range 0 - 1? In other words, how were these DN scaled?
Re: AST_07XT reflectance values from DN values
Posted: Tue Sep 08, 2020 12:42 pm America/New_York
The LP DAAC provides the AST_07 Surface Reflectance data in the range of 0 to 1000 for Digital Numbers and has a scaling factor of .0001. The band scale factor for the ASTER 07 product is found within the detailed product description on the Layers tab.
The information on the AST_07 product page provides additional details:
Further documentation on converting the DN to radiance can be found on the ASTER Users Handbook.