topsApp interferograms to MintPy

[Joel Johnson]

Hello MintPy group,

I am a new user trying to set up ISCE topsApp interferograms for processing with MintPy. There seems to have a been a similar case here previously: https://groups.google.com/u/1/g/mintpy/c/WRxZ5aUuQFY/m/vMWSe9MYBAAJ

 I have 300 interferograms that are already geocoded and coregistered and have been able to run through the demo sets and call prep_isce.py, but do not know what arguments to pass it.

Looking at load_data https://mintpy.readthedocs.io/en/latest/dir_structure/#isce_topsstack , I think I need to set up the following two files:

1  a combined hgt.rdr file - it is split into swaths for each interferogram currently in a geom_master/IW where it is split into 6 different rdr files. Is there a way to merge these manually?

2  baseline directory. I am not sure if this is somewhere I haven't found. Is this a required file?

Do I simply create a similar load_data file with directions to my files at the location I plan to run smallbaselineApp.py, or is there other prep I need to do?

Thanks in advance,

Joel 

[Zhang Yunjun]

Hi Joel,

> 1  a combined hgt.rdr file - it is split into swaths for each interferogram currently in a geom_master/IW where it is split into 6 different rdr files. Is there a way to merge these manually?

This seems more of a question for the ISCE forum. But I am not aware of any script ready to use for this purpose.  You might need to write a function yourself for this.

> 2  baseline directory. I am not sure if this is somewhere I haven't found. Is this a required file?

Yes, it's required. It can be generated using topsStack/computeBaseline.py one by one.

Note that I would recommend using topsApp + MintPy for advanced InSAR users or Python developers ONLY. Otherwise, topsStack is a much easier and more efficient tool. 300 interferogram is easy to produce for topsStack.

Yunjun

[Joel Johnson]

Hi Yunjun, thanks for taking the time to answer my questions, and I understand that you recommend this setup for advanced users. I hope to get to a point where I am an advanced user, and will also pursue installing topsStack in the future as well.

In the FAQ I see that datasets in geocoordinates are recommended, and I have the DEM, the unwrapped phase and spatial coherence for each interferogram. However the posted examples all seem to have radar coordinate data. Is there any other examples or something in geocoordinates that I could follow? 

At the moment I am still trying to get mintpy to work with topsApp, just loading in basic files before inputting baselines and radar coordinates. With ISCE, there seems to be a difference in the metadata file similar to the error here: https://groups.google.com/u/1/g/mintpy/c/V2S2xecjhQk and prep_isce.py is failing when I load the metadata. I attached my load_data file and the error message I'm getting below: Do you have recommendations for debugging?

Joel 

[范成彦]

Hi all, I successfully solved this problem. The following code is for reference:  Prepare ISCE topsApp interferograms for processing with MintPy_沉研的博客-CSDN博客