Abstract:In this paper, the subsidence of Tangshan mine during the period from December 2012 to February 2014 is monitored with PSI technique using thirteen high resolution TerraSAR-X acquisitions. The overall deformation analysis is carried out on coherent targets with strong intensity stability and high spectral coherence, which are extracted from 47 interferograms with short temporal and spatial baselines, to obtain the subsidence velocity and time-series. The monitoring results show that there are two subsidence centers separately in the northeast and west directions, with a maximum subsidence velocity 58.2 mm/a. It is also found that ground rebound took place from June 2013 to September 2013, yet ground subsidence is approximately linear in the other observation period. Finally, by comparing two elevation error histograms before and after correction, we conclude that the two times regression method used in this paper is perfectly effective for the reduction of topographic residual errors.
ZHANG Xiaobo,ZHAO Xuesheng,GE Daqing et al. Land Subsidence Monitoring of Tangshan Mine Using High Resolution TerraSAR-X Images[J]. jgg, 2017, 37(5): 507-510.