ALOS PALSAR CEOS data processing in SNAP

Microwave Toolbox
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Hello all!
I have processed ALOS PALSAR CEOS data in SNAP and also in SARscape. I am making a comparison of the pixel values between the two processed products and there is a significant difference given the same image over a same area of interest.

I would like to know what are the calibration settings in the SNAP and does it modify the pixel values by adding its own calibration constant!

Any help/suggestions is highly appreciated!

Thank you!

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I guess the radiometric claibration of ALOS data in SNAP is using the equations and constants which were officially released by JAXA:

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Thank you!