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

ISSN号：1672-7207
期刊名称：《中南大学学报：自然科学版》
时间：0
分类：TP13[自动化与计算机技术—控制科学与工程;自动化与计算机技术—控制理论与控制工程] O211.61[理学—概率论与数理统计;理学—数学]
作者机构：[1]School of Info-Physics and Geomatics Engineering, Central South University, Changsha 410083, China, [2]School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410004, China
相关基金：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, 2011 SK3077） supported by Science and Technology Department of Hunan Province, China

关键词：时间序列, 地面下沉, 矿区, 非线性元件, 逆温, 整合, PS网络, 永久散射体, permanent scatters, comer reflector （CR）, constraint adjustment, mining subsidence, nonlinear deformation

中文摘要：

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 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.

英文摘要：

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.

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