I am working with topsar over a large area of mixed coherence values. I am at the unwrapping stage and its not going so well.
I am looking for deformation but I guess what confuses me slightly is that deformation implies a lack of coherence.
I know insar can determine deformation quite accurately in some circumstances but if lack of coherence is a problem how is it used for landslides or large movements due to earthquakes. Surely this leads to a lack of coherence?