isce-framework / isce-framework/dolphin
[Bug]: Offset between bursts in final velocity field
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- Dominant language
- Python
- Stars
- 153
- Forks
- 33
- PR merge metrics
- No merged PRs in 30d
Description
Checked for duplicates
Yes - I've already checked
Describe the bug
The interferograms stitching/unwrapping in dolphin fails for some scenarions combining more that one burst. After processing a few orbits covering an study area, the final velocity field show offsets at the merging line between burst and/or in the overlapping area relative to the rest. I assume this is coming from stitched interferograms with phase inconsistencies that cannot be resolved by the unwrapper.
What did you expect?
Any idea/suggestion on what the root source could be and how to fix for that?
Reproducible steps
Processed several orbits in ascending and descending and problem persists
Environment
Please paste the output of the following:
`python -c "import dolphin; print(dolphin.show_versions())"`
...
dolphin version: 0.42.4.post1.dev3+g7c7819646
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
No source file or test is named. Start by reproducing the issue with several ascending and descending orbits using dolphin 0.42.4.post1.dev3+g7c7819646, then inspect the final velocity field at burst merge and overlap lines. Done means identifying the source of the offsets and documenting or implementing a validated fix.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- data
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Needs clarification
- Newbie friendliness
- 32/100