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Last Post 01 Aug 2016 07:44 AM by  anon
Obtaining Initial Visibility value For FLAASH
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anon



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01 Aug 2016 07:44 AM
    Hi, May I be informed how one can obtain the initial visibility value (km) for the ASTER L1T image when doing Atmospheric correction using FLAASH module. Regards

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    03 Aug 2016 12:22 PM
    You would need to determine this from outside information. For example, perhaps you can find weather information that could give a sense of visibility on the date and time the image was collected. But if you do not have a good guess about visibility, then it is usually not critically important. I believe that FLAASH only uses that value if it is unable to calculate its own from the data, for some reason. - Peg

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    11 Aug 2016 05:20 AM
    Thanks very much
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