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Land subsidence in Beijing is supposed to be caused by over-exploitation of ground water, which is leading to a rapid decline of water levels, drying out clay layers that finally result in land subsidence. The Interferometric Point Target Analysis (IPTA) is an advanced method to monitor vertical motion of the land surface over time. IPTA identifies backscattering objects, named as coherent points...
In this paper, the methods, primary PS-like method and Stanford Method for PS (StaMPS) are both studied and used to monitor the subsidence in Tianjin area. PS (Permanent Scatter) technique is possible to avoid many of the limitations of conventional DInSAR by analyzing just certain pixels which behave like point scatters and retain good correlations. Several PS-like methods have been developed and...
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