DEM Problems sentinel1 (noise)

Hi guys, there is a lot of noise on my DEM.
this is the result that I’ve got.

Please help me.

coherence is the key. You can only expect good results in areas of high coherence.
I actually think the results are pretty good for a Sentinel-1 DEM.

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Even with perfect coherence the interferogram will still contain signal from the ionosphere and atmosphere.

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