Time series ground subsidence inversion in mining area based on CRInSAR and PSInSAR integration  

作　　者：邢学敏 朱建军 王永哲 杨亚夫 

机构地区：[1]School of Info-Physics and Geomatics Engineering, Central South University [2]School of Traffic and Transportation Engineering, Changsha University of Science and Technology

出　　处：《Journal of Central South University》2013年第9期2498-2509,共12页中南大学学报（英文版）

基　　金：Project(2006AA12Z156)supported by the National High Technology Research and Development Program of China;Projects(40974006,40774003)supported by the National Natural Science Foundation of China;Project supported by Construct Program of the Key Discipline in Hunan Province,China;Projects(2011GK3106,2011SK3077)supported by Science and Technology Department of Hunan Province,China

摘　　要：The subsidence of the mining area was monitored by analyzing the phase of permanent scatters （PS） which maintained high coherence in magnitude of SAR images.A hew method of spatial unwrapping was presented which used the subsidence rates calculated on comer reflector （CR） points as constraints for PS network to perform the spatial unwrapping using the parametric adjustment method.The algorithm achieved the integration of CR data and PSInSAR algorithm.The colliery dense distributed area around Baisha reservoir was chosen as the study area in the experiment.The time series of subsidence from February in 2007 to February in 2010 is successfully inversed by using the periodic function to simulate the linear and nonlinear components of the deformation.The simulation results show that the accuracy can be ± 2.1 mm with the leveling data being used as the external validation data.The subsidence of the mining area was monitored by analyzing the phase of permanent scatters(PS)which maintained high coherence in magnitude of SAR images.A new method of spatial unwrapping was presented which used the subsidence rates calculated on corner reflector(CR)points as constraints for PS network to perform the spatial unwrapping using the parametric adjustment method.The algorithm achieved the integration of CR data and PSInSAR algorithm.The colliery dense distributed area around Baisha reservoir was chosen as the study area in the experiment.The time series of subsidence from February in 2007 to February in 2010 is successfully inversed by using the periodic function to simulate the linear and nonlinear components of the deformation.The simulation results show that the accuracy can be±2.1 mm with the leveling data being used as the external validation data.

关 键 词：permanent scatters comer reflector （CR） constraint adjustment mining subsidence nonlinear deformation 

分 类 号：TD327[矿业工程—矿井建设]