Modeling Interferogram Stacks

Fabio Rocca
2007 IEEE Transactions on Geoscience and Remote Sensing  
The dispersion of the optimal estimate of a subsidence motion is determined, and compared with that of Permanent Scatterers, when the targets are progressively decorrelating due to Brownian motion. Approximately, with N consecutive images and revisit time T, the interferogram stack results are equivalent to PS's, if the pixel count in the window grows with N²T, independently of the frequency. In the case of Sentinel -1, it is possible to expect that, in lightly vegetated areas and in one year
more » ... me, less than 100 pixels will create an interferogram stack as efficient as a PS 1 .
doi:10.1109/tgrs.2007.902286 fatcat:5kurux4iube2zgyjavp7ykbhfi