how we can get the incident angles range (minimum and maximum) for an area selected (I have shapefile for this area)?
I need to do a coregistration for three scenes and make a multi-temporal color composite for the VV of these scenes (different times) to test if the coregistration works well for my work? is there any way to do that?
I can answer your first question.
If you have loaded the shapefile you can go to the statistics dialog (Menu: Analysis / Statistics ).
A band needs to be selected in the Product Explorer.
In this dialog you can select a ROI mask. Your shapefile should show up in this list. You can even compute statistics for multiple regions at once.
As @johngan mentioned you could apply similar approach, but adding up more processes steps, such as TOPSAR SPLIT ------> Apply orbit-----> DEBURST------>TC, and then continue with other aforementioned steps, note that if are interested in multilook this means that better to use GRD,