At successful exit the process control flag is switched:
unwrap: 1
The section for the unwrapping in the result file for the interferogram looks like the following for method TREEF (file name and format are used later):
******************************************************************* *_Start_unwrap: ******************************************************************* Data_output_file: Outdata/uint.raw Data_output_format: real4 Data_output_file_regions: Outdata/regions.raw Data_output_format: short int (2B) First_line (w.r.t. original_master): 1001 Last_line (w.r.t. original_master): 2105 First_pixel (w.r.t. original_master): 501 Last_pixel (w.r.t. original_master): 700 Multilookfactor_azimuth_direction: 10 Multilookfactor_range_direction: 2 Program for unwrapping: treef_ramon Output program for unwrapping: ramon.uw Delta lines for seed: 100 Delta pixels for seed: 100 Number of patches used: 1 ******************************************************************* * End_unwrap:_NORMAL *******************************************************************
If the 'Data_output_format:' is 'real4', then the output is assumed to be real4 unwrapped phase values. If the unwrapping was not successful, these pixels are set to -999. and ignored for slantrange to height conversion and differential insar.
The 'Data_output_format:' of the unwrapped interferogram also can be 'hgt', a band interleaved format (amplitude, phase) for SNAPHU. For more details on the definition if unwrapping went wrong, see Annex D.