there is a tutorial on how you can use the profile plot tool: https://www.youtube.com/watch?v=_g0F-hq3xTs
hi, did you use sarmint? i want to do the unwrapping process using virtual machine and not the snaphu plugin on snap, but i cant find sarmint .do you know where can i download it?
Hello, I have the same process as you. After step 4, I got the following file.
image|690x182
Now,However, which file should I open in step 5? None of these files seem to open.
Please help me, thank you very much.
@SUN-Ravenclaw: The files we see are the ones which are exported by SNAP. Now you have to run snaphu to create UnwPhase_ifg_[…].snaphu**.img**
After this file was created by snaphu, you an run the import and select this hdr file.
yes, but it has to be properly installed and executed (explained by @oana_hogoiu here: Snaphu Unwrapping Plugin)
Yes, sir, I have successfully installed the tool. But when I open the “UnwPhase *. hdr” file, it gives the following error message
Another thing,I got the "snaphu export"files according to the following figure1/2/3
Is there anything wrong?
for the unwrapping, you have to select the Phase_ifg_VV (the UnwPhase does not exist yet).
The pre-processing of the exported interferogram looks alright, also the file structure from your screenshot above.
Yes, you are right. I should enter Phase_ifg_VV file. In fact, what I input yesterday is also this file, only the output folder and the source product folder are the same. As a result, there is no change in the contents of the folder. Is this a software bug?
It should work actually. Alternatively, you can run snaphu from the command line as described here: Snaphu Export
I am currently preparing a revision of the TOPS InSAR tutorial, but this will still take a bit of time until it is finished.
That’s great, I look forward to your completion soon.
You can download the tutorial now from here: http://step.esa.int/docs/tutorials/S1TBX%20TOPSAR%20Interferometry%20with%20Sentinel-1%20Tutorial_v2.pdf
The other InSAR tutorials will also be revised in the next weeks: http://step.esa.int/main/doc/tutorials/
I saw in the tutorial how to improve the extracted displacement results. Thank you again, Abraun, you are a very patient and serious person.
Hi ABraun,
When I tried to use snaphu unwrapping, I am getting following error:
“Unexpected or abnormal exit of child process
Abort”
Attached a screenshot. Can you please tell me what might be a problem and how to solve it?
Thank you!
I’m not sure - please try to increase the number of tiles in the config file and run again.
Hi!
When I increase the number of tiles, I get error saying
“Tiles too small or overlap too large”.
Any suggestions?
Reduce the tile overlap to 50, it depends on the extents of the entire scene.
I am using number of rows and columns as 50. Tile overlap is now set to 100 (It wasn’t working when I had set the overlap to 50). Anyway, I believe I have figured out what was the problem. I will let you know the results.
50 rows and columns is too much, each individual tile should be considerably larger than the defined overlap:
the overlap must be selected in relation to the size of a single tile (can be calculated based on the total image size and the numbers of colums and rows):
If the overlap is the same size as a tile (or larger), snaphu will give this error message.