Sentinel satellite imagery has become a standard product for operational Earth observation. For the SAR case, this holds for Sentinel-1 ground-range-detected (GRD) imagery, in particular when terrain-corrected to sigma nought and converted to dB (10*log10(x)).

My question is: Can one provide a reasonable lower and upper bound of those backscatter values for sake of cross-image calibration?

I don't necessarily rely on an answer backed by physics or instrument design (although this would be nice), but could also live with empirical values.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.