I am trying to co-register two S1 GRD images using the DEM-Assisted Coregistration. I want to do that using two different DEMs, i) SRTM 1 arc sec (downloaded directly from SNAP) and ii) an external DEM of 5m GSD.
I have followed the following workflow:,
- apply orbit file
- DEM-Assisted Coregistration
I have not found problems when using SRTM, but unfortunatelly, when I try to use my external DEM of 5m, a lot of problems appears:
- Java heap space
- GC overhead limit exceeded…
- No results were obtained and the software collapsed
I have increased the Xms and Xmx parameters in the snap.conf file (my PC has 32Gb of RAM) and also the cache size (from 1024 to 4096)…
I also have tryed to coregister different subsets of the two images instead of whole the image… but nothing!
I work with Windows 10 pro for Workstations
Processor: Intel ® Xeon ® W-2145 CPU @ 3.70Ghz
RAM : 32 GB
Operative sistem of 64 bits, x64
I do not know what else can I do in order to obtain the results.
thanks in advance