Search found 16 matches

by ASF - hjkristenson
Mon Jul 27, 2026 5:17 pm America/New_York
Forum: Home
Question: Availability of Earlier PROVISIONAL RSLC Products and Supplemental Frame Coverage
Replies: 2

Re: Availability of Earlier PROVISIONAL RSLC Products and Supplemental Frame Coverage

Hello vtsironi , The specifics of the supplemental provisional products have not yet been determined. As ASF - bhauer mentioned, there are acquisitions for your area of interest from June 20 onward, but we don't yet know if your specific frames will be processed further back in time as part of the s...
by ASF - hjkristenson
Wed Mar 18, 2026 5:20 pm America/New_York
Forum: Home
Question: OPERA DISP-1
Replies: 5

Re: OPERA DISP-1

rcrajapp refer to the Recommended Mask information to learn more about this layer. You might also find the Quality Metrics information useful when considering your particular use case. You may also be interested in an online course that is being offered in April, which includes a session focused on...
by ASF - hjkristenson
Mon Mar 16, 2026 2:46 pm America/New_York
Forum: Home
Question: NISAR satellite backscatter coefficient image generation
Replies: 9

Re: NISAR satellite backscatter coefficient image generation

hfattahi wrote: Thu Mar 12, 2026 2:22 am America/New_York Please see section 4.5.2.1 in the product specification document for GSLC in the following path:
If that link doesn't work for you, try this:
https://nisar.asf.earthdatacloud.nasa.gov/NISAR-SAMPLE-DATA/DOCS/NISAR_D-102269_RevE_NASA_SDS_Product_Specification_L2_GSLC_Nov8_2024_w-sigs.pdf
by ASF - hjkristenson
Mon Mar 16, 2026 1:59 pm America/New_York
Forum: Home
Question: OPERA DISP-1
Replies: 5

Re: OPERA DISP-1

Hello rcrajapp , Keep in mind that the DISP-S1 data is in the line of sight of the SAR sensor, which is a side-looking instrument. As such, there are both horizontal and vertical components to displacement values. You may need to take this into consideration when correlating the data to hydrologic p...
by ASF - hjkristenson
Wed Mar 11, 2026 3:18 pm America/New_York
Forum: Home
Question: Will ASF HyP3 support NISAR? Any roadmap/timeline?
Replies: 13

Re: Will ASF HyP3 support NISAR? Any roadmap/timeline?

The NISAR mission will be generating only the nearest-neighbor GUNW products (12-day interferograms). These products will be processed automatically as new data is acquired, and archived for public use. Custom pairings for other date ranges would currently need to be generated by users themselves. I...
by ASF - hjkristenson
Tue Mar 10, 2026 1:02 pm America/New_York
Forum: Home
Question: NISAR satellite backscatter coefficient image generation
Replies: 9

Re: NISAR satellite backscatter coefficient image generation

If you're interested in comparing the NISAR GCOV products to similar Sentinel-1 data, the OPERA RTC-S1 products provide terrain-corrected radar backscatter in gamma-nought power for Sentinel-1 acquisitions.
by ASF - hjkristenson
Mon Mar 09, 2026 3:21 pm America/New_York
Forum: Home
Question: NISAR satellite backscatter coefficient image generation
Replies: 9

Re: NISAR satellite backscatter coefficient image generation

Have you evaluated the GCOV products , or are you looking specifically for non-terrain-corrected data? While the GCOV products present normalized radar backscatter in gamma-nought power, they also include a layer for conversion to sigma-nought. They also contain the calibration layers used, includin...
by ASF - hjkristenson
Fri Feb 27, 2026 5:06 pm America/New_York
Forum: Home
Question: Will ASF HyP3 support NISAR? Any roadmap/timeline?
Replies: 13

Re: Will ASF HyP3 support NISAR? Any roadmap/timeline?

iwa103 , The NISAR mission makes some higher-level products available directly in the archive without the need for additional processing. This includes Geocoded SLCs (GSLC), 12-day Geocoded Unwrapped Interferograms (GUNW), and Geocoded Covariance (GCOV) products, which can be used in place of an RT...
by ASF - hjkristenson
Thu Sep 04, 2025 6:39 pm America/New_York
Forum: Home
Question: Link to Earthdata GIS Portal is broken
Replies: 5

Re: Link to Earthdata GIS Portal is broken

This may have to do with the recent update of the EGIS platform from ArcGIS Enterprise 11.4 to 11.5. Here's some guidance from the EGIS team: EGIS URLs Issues: If you’re seeing errors when accessing gis.earthdata.nasa.gov/portal/home or other EGIS URLs, it is most likely due to cached web files from...
by ASF - hjkristenson
Tue May 27, 2025 4:12 pm America/New_York
Forum: Home
Question: Data Downloading Problem
Replies: 2

Re: Data Dowloading Problem

Hello @naeem101,
Try using this link to access the "Edit Profile" tab:
https://urs.earthdata.nasa.gov/profile/edit
Once you sign in with your Earthdata Login credentials, you should be able to scroll down to the study area field and use the drop-down menu to select a study area.