If the elevation of the study area (DEM) ranges from (20-26 meter), should the terrain be corrected in the image from (Sentinel-1 Level-1 GRD) for the land cover classification ?
Ismail Mondal hi i would like to ask. I’m using sentinel 1 to get the soil moisture. My thesis is about groundwater detection. I’m preprocessing sentinel 1 by using snap. Radiometric calibration->speckle filtering->range doppler terrain correction. But I’m stucked at range doppler terrain correction. Do you have any suggestion?
Ismail Mondal you will need Sentinel-1 VV and VH polarization, use SNAP or orfeo-toolbox to do Radiometric correction and speckle filtering -> Geometric correction using DEM , when using orfeo-toolbox you can use both DEM model and Geoid to get the height above the ellipsoid in case there is no DEM available.
The documentation for orfeo-toolbox can be found here:
- Calibraion
https://www.orfeo-toolbox.org/CookBook/recipes/sarprocessing.html#calibration
- Terrain correction
https://www.orfeo-toolbox.org/CookBook/Applications/app_OrthoRectification.html
- Badges
- Science topic
- Similar topics
- Correction