Multi-set analysis of platform influence on density and quality of Persistent Scatterers: A case study for Bucharest area

Abstract

During the past years, SAR techniques like Persistent Scatterer Interferometry (PSInSAR) have provided hyper-precision sensing at very large spatial scales. The continuous improvement in the quality of PS measurements comes from the constant development of new acquisition geometries embedded in various platforms. In this study we make a comparative assessment of the quality, number and density of Persistent Scatterers obtained using data acquired in different geometric configurations implemented on three platforms - ERS, ENVISAT, TerraSAR-X. All results were obtained by considering individual datasets of the same urban area (Bucharest), with a combined period of acquisitions of 22 years. The analysis is performed in terms of incidence angles, baseline, orbit type, look direction and PS dynamic range.