Speckle noise standard deviation

s1tbx
#1

Hello everyone :wave:

I notice that speckle noise standard deviation in the Refined Lee polarimetric speckle filter is calculated as “1 / sqrt(number_of_looks)”.

Is anyone familiar with this derivation? Can you point me to the right literature?

Many thanks!

#2

There should be a reference in the SNAP help (inside the SNAP desktop GUI)

#3

Hello @mengdahl,

Yes, found it in this reference: https://ieeexplore.ieee.org/document/4689358

Thank you~

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