DEM Problems sentinel1 (noise)

[imane_se]

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

Please help me.
@ABraun
thanks.

[ABraun]

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.

[mengdahl]

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