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Last Post 23 Oct 2007 08:26 AM by  anon
sigma nought and beta nought
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anon



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23 Oct 2007 08:26 AM
    I want to use envi to do the radiation calibration of ers2 sar data, to convert DN value into db. But i have no dem data and acturally in my case i need not consider the error caused by topography. I noticed that the unit of beta nought is db. what's the difference between sigma nought and beta nought? If i have no dem data, can i use beta nought to replace sigma nought?
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