Hi! I have the same problem the image is black, but I am analyzing the coast. Could someone tell me which geometric correction is better for coasts and oceans?
Hi everyone.
I wanna implement Range-Doppler Terrain correction on Sentinel-1 data. but the region donāt have SRTM DEM for auto download
what should I do for correct TC?
Thanks in Advance
ļ¼1ļ¼When setting:
DEM Resampling method:Nearest Neighbor
Image Resampling method:Bilinear Interpolation
The result is the same, missing lines.
ļ¼2ļ¼But when setting:
DEM Resampling method:Nearest Neighbor
Image Resampling method:Nearest Neighbor
There are no missing lines in the results.
you can try if ALOS World DEM delivers better results for terrain correction. It can be downloaded freely (after registration) here: https://www.eorc.jaxa.jp/ALOS/en/aw3d30/index.htm
You can use it as an external DEM (GeoTiff in WGS84)