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I'm guessing you never worked with SAR data before, so I'll break your question down into parts I can answer: 1) Create high resolution DEMs in GIS The process of creating a DEM just from SAR data is quite complex and requires a lot of processing power and memory. I don't know of a GIS software that implements DEM creation due to these constraints. 2) ...


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This is not the exact answer but could be used as a workaround. I guess that you are not using the 8 tiles together for memory reason, but your area seems to be quite homogeneous. So you could degrade the resolution of your images (e.g. with a factor 2 or 3) and create a mosaic. Then you train your classifier on the mosaic image and you "save to file" the ...



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