AST_07XT reflectance values from DN values

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alobo
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Joined: Mon Aug 31, 2020 5:37 am America/New_York

AST_07XT reflectance values from DN values

by alobo » 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?
Thanks

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LP DAAC - jwilson
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Joined: Mon Sep 30, 2019 12:39 pm America/New_York
Answers: 1

Re: AST_07XT reflectance values from DN values

by LP DAAC - jwilson » 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:
https://lpdaac.usgs.gov/products/ast_07xtv003

Further documentation on converting the DN to radiance can be found on the ASTER Users Handbook.

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