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Last Post 15 Mar 2017 10:35 PM by  anon
WV3 Radiometric Calibration
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anon



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15 Mar 2017 10:35 PM
    I am working on a WV2 and a WV3 image, with ENVI 5.2. The WV2 one can be convert into either radiance or reflectance by using the Radiometric Calibration Tool. However, for the WV3 image, it can only be converted into Radiance, but NOT reflectance. After looking at the metadata, I have found that the irradiance data is missing for the WV3 image, so I believe that is why ENVI cannot convert it into reflectance? Is there any solutions for the situation or what steps should I take to get it to reflectance? Thanks http://imgur.com/CCTnUyI (image of missing irradiance data for WV3) http://imgur.com/DfQ6KwT (image of when I clicking the radiometric calibration tool for the WV3 image)

    MariM



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    16 Mar 2017 08:40 AM
    Conversion to TOA reflectance may not have been supported for WV3 data in ENVI 5.2. Do you have access to a newer version (5.3 or 5.4)? These versions should extract all the required information to convert Wv3 to TOA reflectance. Alternatively, you could use band math or something similar to convert the data manually or use the atmospheric correction module (FLAASH or Quac) to convert to surface reflectance.
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