A bit of a beginner question but is there a way to generate Elevation data from Sentinel 3 (or 1)? I have an AOI covering a 60km*60km area. The area is a relatively flat dry lake bed but for some reason the existing DEMs for the area (I have tried all the freely available ones - SRTM, ACE2, GTED, ASTER etc.) are not very accurate. The ACE2 dataset is the worst with a ±10m error within a couple of pixels when the whole lake bed only varies by 1-2m. I find it confusing (to this beginner) that you can measure sea level within a couple of cm but land surface is highly variable?
DEM data from Sentinel 3?
Sentinel-3 is not appropriate for DEM. You might get it from Sentinel-1 somehow but it is quite a bit complicated and you would have to use raw SLC data. Some more information here:
gis.stackexchange.com
How to produce high-resolution DEMs from new Sentinel-1 data?
asked by
Richard
on 12:31PM - 19 Oct 14 UTC
Might it be that these old DEMs were done when lake was still covered with water? If so, it would be impossible to generate DEM from satellite imagery.
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