Warning in radiometric calibration in Sentinel-1 COG

snap
1

Hi everyone

I am trying to perform a radiometric calibration on a Sentinel-1 COG image and I get the following warning:

"The calibration LUT for this product could be incorrect and therefore the calibration result may not be reliable”.

"I have performed the calibration on the Sentinel-1 COG image and on the same Sentinel-1 image but not COG (both images were downloaded from the Copernicus Browser), and the results are different, so I assume that the calibration on the COG image is not being done correctly. Could you help me solve the problem?

I am using SNAP 13

Thanks a lot

2

@lveci could you help?

3

I am having the same issue. Did you find a solution?

4

Hello,
@diana_harosa any news on the subject ? With the STAC catalog I’m also considering to process the _COG product with SNAP 13

5

Hi! I traced down the problem and wrote a small script that fixes the warning: GitHub - MrSquidward/s1-cog-patcher: Patch Sentinel-1 manifest file for SNAP processing · GitHub. You need to download the script and run it against your faulty product. The script modifies the product in-place, so you can just carry out normally afterwards.