Best Option for backgeocoding in Alaska

[falahfakhri]

@SMJ.Mirzadeh

I can find and download it simple using earthexplorer.usgs.gov

Yes this also good option to download it.

@SMJ.Mirzadeh

Could you please tell me which format is suitable? Envi standard or Geotiff?

I’d recommend Geotiff, DEM must be WGS84,

Have a look at this post please,

External DEM

what comes to my mind is that the DEMs must be in WGS84 and not a local projection. Do you select them manually in the corresponding module or do you place them in the AUX folder? I haven’t tested hgt-files but I would rather use GeoTIFFs as an input.