多基线距DInSAR反演河南省永城煤矿区地表形变

永城是河南省重要的煤炭生产基地,煤矿开采后形成的塌陷区中有70%以上是耕地,已严重威胁到当地居民的生产生活秩序以及生命财产安全,迫切需要采用快速高效的技术手段获取塌陷区的信息来为相关部门提供决策依据;研究中选用2004～2006年的6景ASAR数据,采用基于相干目标的多基线距DInSAR技术对河南永城煤矿区的地表形变进行反演;研究中采用的地表形变反演技术克服了传统DInSAR技术失相干的问题,反演得出的地表形变的范围和程度与调查结果相吻合,表明该项技术具有很强的实用性和推广性;最后分析反演误差产生的原因并提出今后可采用L波段以及多平台联合监测来提高煤矿区地表形变的精度。

Surface deformation from 2004 to 2006 on Yongcheng Coal Mining Area by Multibaseline DInSAR in Henan Province

Yongcheng is an important coal production base of Henan Province.More than 70% of the coal mining subsidence area is cultivated land.This kind of circumstance has threatened the local residents severely in local production,life and property,so it becomes an urgent problem to be solved to adopt fast and efficient technological means to obtain the information of subsidence area used to help the relevant departments to make decision;This paper selected six ASAR images between 2004 and 2006 to inverse the surface deformation of Yongcheng coal mining area in Henan province by Multibaseline DInSAR.The Inversion results are in accordance with survey results through comparison and analysis in the paper,and the study shows that inversion technology of Surface Deformation by Multibaseline DInSAR has a strong practical and generalization;Finally,it analyses the causes of errors and advise using L-band and multi-platform joint monitoring technique to improve the monitoring precision.