The Order of DEM Creating Steps

[ABraun]

you need better coherence for interferometry. Only areas with high coherence can be used later.

Please have a look at these answers:

Subsidence map in 3d view

thank you, @heinzollerketchup. Generally, the longer the temporal baseline (=the time between two images) the higher is the decorrelation which leads to small coherence values. It also depends on the cover of the analyzed surface. Bare ground mostly shows slower decorrelation than one with high vegetation cover. As you can see here (tested with S1 data), coherence decreases from 0.7 to nearly 0.1 within 6 12-day-cycles (12, 24, 36, 48, 60 and 72 days, blue to red) [image] Source: http://ieee…

Radarsat 2 coregistration

Maybe a few points: Coherence stronlgy depends from the land cover. Much vegetation leads to decorrelation between your images and low coherence. Where is your data located? Can you post a screenshot of your coherence? You can increase the number of GCPs for the coregistration. This could lead to better results at some locations. Also try to use a second order polyonomial and trucated sinc interpolation. These things won’t increase the overall quality of the data but baybe lead to smaller impr…