Unexpected Process Exit During Snaphu Unwrapping in SNAP

Microwave Toolbox snaphu
1

I’m currently working on generating a displacement map using InSAR data in the SNAP software. During the Snaphu phase unwrapping step, I encounter an error that causes the process to fail. The error message I receive is as follows:

snaphu v1.4.2

26 parameters input from file snaphu.conf (84 lines total)

Creating temporary directory snaphu_tiles_8568

Unwrapping tile at row 0, column 0 (pid 14072)

Unwrapping tile at row 0, column 1 (pid 11488)

Unwrapping tile at row 0, column 2 (pid 6524)

Unwrapping tile at row 0, column 3 (pid 11056)

Unexpected or abnormal exit of child process 11488

Abort

Details:

  • I’m using Snaphu v1.4.2 within SNAP for the unwrapping process.
  • The error occurs during the unwrapping of tiles, where one of the child processes terminates unexpectedly.
  • The snaphu.conf file has been configured with 26 parameters, and temporary directories are being created correctly.
  • The error arises consistently at the tile unwrapping stage, and a child process (PID 11488 in this case) exits unexpectedly.

Can anyone help me?

2

When I have come across such errors, it has often been possible to overcome by changing the tiling - if you have sufficient memory - use no tiling. Other things to look for is that the input file is correct (not corrupted) and really in the format Snaphu expects it to be. If you don’t get ahead, enable the logging in Snaphu to obtain more information about the error reasons.