Hello and thank you for your assistance,
I have tried this on Sentinel-1 data obtained from the copernicus website https://scihub.copernicus.eu/dhus/#/home.
Before applying the resampling I am using the following operators on the image:
- GRD border noise removal (for images using IPF < 2.9).
- Thermal noise removal (although I have performance issues with this operator as mentioned here GRD-Border-Noise and Thermal noise removal are not working anymore since March 13. 2018).
- I am masking out the sea using the land mask operator.
- Then I apply calibration.
- And then I get the different results using Resample from cli or from desktop.
It seems you have identified the same problem with S3 images.
I ended up implementing my own solution for the resampling but it would have been easier without the workaround.