Remove topography from Image

[annakisara]

hello , I would like to know if I can remove topographie from Image sentinel 1A GRD ?

[ABraun]

if you mean the radiometric distortions caused by topograpy, you first have to calibrate to Beta0 and then apply the Terrain Flattening module.

Please have a look here:

S1 radiometric correction

I did a few tests because I still wonder about the best pre-processing parameters for Sentinel-1. I therefore downloaded a Scene from 12.09.2016 which covers Cyprus (GRD and SLC). I chose this area due to its topographic complexity and the little vegetation cover. S1A_IW_GRDH_1SDV_20160912T035113_20160912T035136_013014_0149C4_6E2F S1A_IW_SLC__1SDV_20160912T035112_20160912T035136_013014_0149C4_CF51 I wanted to see the change in the result if different input data and modules are applied. These…

GRD > Calibrate to S0 > RD Terrain Correction:

GRD > Calibrate to B0 > Terrain Flattening > RD Terrain Correction: