PolSARpro ALOS2 FDB analysis

Just to ask your support again: with dualpol data, are you suggesting to move to SNAP?

Or are you saying I made a mistake in the procedure in polsarpro?
When I follow your indications I get stucked as with dual pol I can only have Sxx and Sxy and thus the steps you described in the links kindly provided are not applicable

Thanks for additional suggestions!