Abstract:Persistent scatterer interferometry (PSI) has the ability to achieve submeter-scale digital elevation model (DEM) and millimeter-scale deformation. However, it's difficult to maintain good performance under long baseline and large phase gradient. In this paper, we develop a network optimized ridge estimator (NORM) for two-tier network PSI. Such a method can increase parameter estimation robustness and spatial continuity in single-prime mode and urban build environments. Firstly, we construct an optimized first… Show more
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