MintPy template for the GMTSAR stack procssing

[Sayyed Mohammad Javad Mirzadeh]

Dear all,

I tried to do the stack processing for the Envisat dataset using the GMTSAR and set the required files into a template for MintPy to do the time series processing.

I found a sample in the following link (https://mintpy.readthedocs.io/en/latest/dir_structure/) but something is different between the structure of the sample and mine I have.

Could anybody please let me know the structure of the "baseline.txt" file I should prepare for each interferogram using the "SAT_baseline" command in GMTSAR? And also I do not have any folder named "geometry" including the "topo_ll.grd" file.

Thank you so much for your consideration.

Sincerely,

Sayyed

[Sayyed Mohammad Javad Mirzadeh]

Dear all,

Does anybody have the template file of MintPy, named "StHelensEnvDT156.txt" for the GMTSAR processor?

Sincerely,

Sayyed

[Sayyed Mohammad Javad Mirzadeh]

I tried to run the MintPy using the attached templated file for the stack, provided by the GMTSAR, but I got the following error in the command line:

******************** step - load_data ********************

load_data.py --template /media/insar/Research/AbarkuhPaper/Envisat/Descending292_Test/mintpy/smallbaselineApp.cfg /media/insar/Research/AbarkuhPaper/Envisat/Descending292_Test/mintpy/AbarkuhEnvDT292.txt --project AbarkuhEnvDT292

processor : gmtsar

SAR platform/sensor : Env

--------------------------------------------------

prepare metadata files for gmtsar products

prep_gmtsar.py /media/insar/Research/AbarkuhPaper/Envisat/Descending292_Test/mintpy/AbarkuhEnvDT292.txt --mintpy-dir /media/insar/Research/AbarkuhPaper/Envisat/Descending292_Test/mintpy

writing  /media/insar/Research/AbarkuhPaper/Envisat/Descending292_Test/mintpy/inputs/data.rsc

/home/insar/tools/MintPy/mintpy/load_data.py:767: UserWarning: prep_gmtsar.py failed. Assuming its result exists and continue...

  warnings.warn('prep_gmtsar.py failed. Assuming its result exists and continue...')

--------------------------------------------------

searching interferometric pairs info

input data files:

unwrapPhase     : /media/insar/Research/AbarkuhPaper/Envisat/Descending292_Test/intf/*/unwrap_ll.grd

coherence       : /media/insar/Research/AbarkuhPaper/Envisat/Descending292_Test/intf/*/corr_ll.grd

Traceback (most recent call last):

  File "/home/insar/tools/MintPy/mintpy/smallbaselineApp.py", line 1256, in <module>

    main(sys.argv[1:])

  File "/home/insar/tools/MintPy/mintpy/smallbaselineApp.py", line 1238, in main

    app.run(steps=inps.runSteps)

  File "/home/insar/tools/MintPy/mintpy/smallbaselineApp.py", line 1029, in run

    self.run_load_data(sname)

  File "/home/insar/tools/MintPy/mintpy/smallbaselineApp.py", line 343, in run_load_data

    mintpy.load_data.main(iargs)

  File "/home/insar/tools/MintPy/mintpy/load_data.py", line 832, in main

    stackObj = read_inps_dict2ifgram_stack_dict_object(iDict)

  File "/home/insar/tools/MintPy/mintpy/load_data.py", line 409, in read_inps_dict2ifgram_stack_dict_object

    dsPathDict = skip_files_with_inconsistent_size(dsPathDict,

  File "/home/insar/tools/MintPy/mintpy/load_data.py", line 329, in skip_files_with_inconsistent_size

    atr_list = [readfile.read_attribute(fname) for fname in dsPathDict[dsName]]

  File "/home/insar/tools/MintPy/mintpy/load_data.py", line 329, in <listcomp>

    atr_list = [readfile.read_attribute(fname) for fname in dsPathDict[dsName]]

  File "/home/insar/tools/MintPy/mintpy/utils/readfile.py", line 919, in read_attribute

    atr.update(read_gdal_vrt(metafile))

  File "/home/insar/tools/MintPy/mintpy/utils/readfile.py", line 1299, in read_gdal_vrt

    if 'UTM' in srs_name:

TypeError: argument of type 'NoneType' is not iterable

Could you please guide me on how I can fix this issue?

Sincerely,

Sayyed

[Zhang Yunjun]

Hi Sayyed,

There is no well-documented GMTSAR + MintPy workflow at the moment, unfortunately. To use this combination, one will have to understand the requirement of both software well and do fixes and hacks whenever applicable. Here would be a good start:

https://mintpy.readthedocs.io/en/latest/FAQs/#2_how_to_prepare_the_input_for_mintpy_if_i_am_using_currently_un-supported_insar_softwares

Yunjun

[Sayyed Mohammad Javad Mirzadeh]

Dear Yunjun,

Thank you for your reply and for sharing that link.

You are right. I will go through that to fix my issue.

Sincerely,

Sayyed