I am using ascending Cosmo SkyMed (CSKS2) SCS_B data. I imported normally, ran radiometric calibration, and tried to terrain correct via Range Doppler and SAR Simulation methods (outputting complex data) using the default DEM (tried the others but got same error). I repeatedly get:
SNAP - Error
An internal error occurred during the target product processing.
Type: IllegalArgumentException
Message: expression: Undefined symbol ‘i’;
In my log folder, this is: org.esa.snap.core.jexp.ParseException: Undefined symbol ‘i’.
What to do, please?
you can only select this if you selected “complex” in the calibration step. If you calibrated to Sigma0, the complex information (i+q) is lost.