ASAR backscatter

Hi! Could someone confirm the processing steps/chain in order to go from ENVISAT ASAR IMP mode to backscatter, and ENVISAT ASAR IMS mode to backscatter, using the SNAP Toolbox?


You should only need to calibrate to Sigma0 for both.

Thanks Iveci! Do I need to, however, go through terrain correction + speckle filtering?

You need to terrain correct if you need the true geographic coordinate of the pixels. I would do this after other SAR processing and just before needing to compare the data with something else like a shape file or other images.

Hello there! I have the same question as @njoshi. I made a graph in order to retrieve ASAR backscatter. My graph is this:

Is this a good workflow processing or have I made a mistake?
Thanks in advance!

You don’t need to use RemoveAntennaPattern. Just Calibration is all you need to calibrate ASAR.

Ok thank you very much :slight_smile: