Search found 4 matches

by ASF - zachkeskinen
Mon Aug 24, 2026 1:25 pm America/New_York
Forum: Home
Question: Azimuth offset issues in P05023 processed GUNWs
Replies: 3

Re: Azimuth offset issues in P05023 processed GUNWs

Thanks that is very helpful. What is corrupting the input data that means you need to discard echoes? Is there any flag (other than terrible looking phase data) for picking out when an RSLC has failed to focus I should be checking for? Attaching RSLC image of poorly focused RSLC for folks who are in...
by ASF - zachkeskinen
Fri Aug 21, 2026 7:48 pm America/New_York
Forum: Home
Question: Azimuth offset issues in P05023 processed GUNWs
Replies: 3

Azimuth offset issues in P05023 processed GUNWs

I have been checking out the new NISAR GUNW release and have found three GUNW products that seem to have very very large ramps or random noise over the whole scene. They are from different orbits (77 and 149) but both over the same frame (24). I don't know if nearby frame have this issue as they don...
by ASF - zachkeskinen
Tue Jan 13, 2026 11:49 am America/New_York
Forum: Home
Question: Notebooks for Snow pre-processing of SAR data
Replies: 3

Re: Notebooks for Snow pre-processing of SAR data

Hello Shiva, Here are a few locations to get started if you haven't run into these already. Here is a notebook walking through using a pair of UAVSAR (an L-band aerial platform) images to retrieve SWE changes over grand mesa. Definitely check out parts 1 and 2 if you are not familiar with UAVSAR. ht...
by ASF - zachkeskinen
Mon Jan 12, 2026 1:57 pm America/New_York
Forum: Home
Question: Notebooks for Snow pre-processing of SAR data
Replies: 3

Re: Notebooks for Snow pre-processing of SAR data

Hello, Can you provide some more information about your desired snow-related outcome with snow? Are you trying to follow an interferometric phase based SWE change retrieval like that outlined in https://tc.copernicus.org/articles/18/559/2024/ and https://egusphere.copernicus.org/preprints/2025/egusp...