The problem of backscatter

I want to get backscatter coefficient and I have calibrate the products to get sigma0,then turn to dB using Toolbox.But the value that turning to dB or only calibrate is the same .I want to know why.Thank you.

Please provide a screenshot of the calibrated product, preferably before dB conversion.

You can try converting it via the BandMaths by following expression if you are not sure if the dB conversion is or is not working:


Please provide more information regarding the version of the software and the product type (mission and processing level) used.