PS InSAR Method and Application
Presenter: Yu-Heng Tai Adviser: Chung-Pai Chang
Abstract
Spaceborne differential synthetic aperture radar interferometry (DInSAR) is a good method to measure surface deformation. However, atmospheric disturbances as well as phase decorrelation have prevented this technique from achieving precise result. These drawbacks are overcome by carrying out measurements on a subset of image pixels corresponding to stable reflectors (Permanent Scatterers, PS) and exploiting long temporal series of interferometric data. It shows great solution in urban area.
However, Permanent Scatterers identify too few of PS pixels in non-urban environments and greatly reduce the accuracy. Therefore, a new InSAR persistent scatterer (PS) method ,which use phase analysis for identification of PS pixels, is apply on the area with less man-made structure and is successful in monitoring volcano deformation. This method allow us to apply InSAR technique in vegetated area and make InSAR measurement more effective and accuracy.
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