PSI for surface motion estimation
Synthetic Aperture Radar (SAR) systems are excellent tools for measuring motion.
Starting with the PSInSAR approach developed around the year 2000, various additional methods have been developed mainly using coherent targets and a large number of SAR images to carefully separate the deformation signal of the phase differences from the other signal contributions and error sources. Starting from a quick introduction into D-InSAR, the concept of the traditional PSInSAR approach is described. From this onward, different approaches, like StaMPS, STUN, SBAS, PSP, QPS, and SqueeSAR are introduced and the differences are explained. From the differences between them, the various applications are shown.