Sentinel-3 Geometric Correction

[Amirhossein]

Dear all

I’m working with sentinel-3 data. S3 OLCI bands (EFR product) need a geometric correction. I do this using the reprojection command in SNAP. However after correction, when I export a kmz format to show in Google Earth, it has a definite spatial shift compare to Google Earth Image. Is there any soulution for this problem?

Sincerely,

[Alisa]

I also encountered a similar problem. When I imported the image processed by SNAP Reprojection into ArcGIS, I found that the position of the same name point was offset. Have you solved this problem ?

[marpet]

Hi @Amirhossein
Your issue might be solved by changing the kind of the GeoCoding.

S3-OLCI C2RCC geocorrection

The C2RCC does not change the geo-location. If you see the displacement afterwards it should also be visible in the source. The accuracy of the Sentinel-3 OLCI geo-location depends on which data is used for the geo-locations. OLCI provides two. The tie-points give only good approximation. Often this is sufficient and when processing data (e.g. reprojection) it is faster. The other data set provides orthorectified geo-location for each pixel. You can switch between both in the options: [image…

If this is not helping, then please provide more information about the data and the area you work with.
Also, screenshot which depict the shift can be helpful.