I would like to process multiple files using Python script.
One of the processing steps will be to use Range Doppler Terrain Correction.
I wonder if selected DEM will be downloaded only once. or each time when I execute ‘Terrain-Correction’ operator? According to documentation:
Various different types of Digital Elevation models can be used (ACE, GETASSE30, ASTER, SRTM 3Sec GeoTiff).
The SRTM v.4 (3’’ tiles) from the Joint Research Center FTP (xftp.jrc.it) will automatically be downloaded in tiles for the area covered by the image to be orthorectified. The tiles will be downloaded to the folder .snap\AuxData\DEMs\SRTM_DEM\tiff
So I am not sure if files will be removed after processing file.
As I can see ‘saveDEM’ parameter controls whether DEM data will be saved in output file only, not if downloaded DEM will be or not removed.