I am currently dealing with a large number of S1 - L1 - GRD images and need to continue working with them in R. Therefore it is necessary that I coregistrate them, as R tells me that the extent is (slightly) different. But my problem is, that the coregistration leads to empty images without any information which tool caused the error.
Some technical information:
- 217 images in total
- 4 different tracks
- preprocessing included apply orbit file, calibration, terrain flattening, range doppler terrain correction
- coregistration settings: nearest neighbour, product geolocation
- test run with 20 images: for the output extent I tried min (7 out of 20 are nulled), max (4 out of 20), master - find optimal master (6 out of 20)
I know there was a similar post already which suggested that after a preprocessing with terrain correction, a simple stack would be sufficient. But it’s not the case here. As mentioned above, R still indicates that the images of the stack do have different extents.
Does someone has an idea and could explain why this error is occuring? I am fairly new to SAR and snap and would appreciate your help.
Thanks a lot!