Building scattering centers analysis with polarimetric SAR interferometry based on ESPRIT algorithm

Building height information extraction in traditional InSAR is still a difficult task as it cannot distinguish scattering centers of different scattering mechanisms within a pixel. In this paper, we analyze the interferometric phases of building by using ESPRIT method with fully polarimetric interferometric SAR data at X-band, two optimum interferometric phases are retrieved to estimate building height. Experimental results indicate that phases of different media can be estimated, validity of this method is demonstrated by using TerraSAR-X data from the German Aerospace Center.