WCSE

Accuracy Testing and Analysis of PS-InSAR and DS-InSAR in Monitoring Urban Land Subsidence

Abstract—InSAR is a new technique in the field of land subsidence monitoring,and the application is more and more widely. In order to evaluate the monitoring accuracy of InSAR objectively，it is necessary to use leveling results to test and analyze the monitoring results of InSAR.Two sets of datas of the surface subsidence of Shangyu are acquired by using PS-InSAR technique and DS-InSAR technique to process the datas of the 23 scenes sentinel-1 images covering Shangyu area respectively.The accuracy of the results is tested and analyzed by using the second-order leveling results of Shangyu area. The results show that the mutual difference between the second-order leveling results and PS-InSAR or DS-InSAR results is mainly distributed in the range of - 5 ~ + 5mm / year, which demonstrate that the monitoring results of PS-InSAR and DS-InSAR are reliable.It provides basic information and data for the construction of land subsidence monitoring network and comprehensive treatment of land subsidence, and provides decision-making basis for government departments to prevent and control geological disasters of land subsidence.

Index Terms—PS-InSAR,DS-InSAR,land subsidence

Xiaoyu Xia
Shandong Jiaotong University, CHINA

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Cite: Xiaoyu Xia, "Accuracy Testing and Analysis of PS-InSAR and DS-InSAR in Monitoring Urban Land Subsidence" Proceedings of 2023 the 13th International Workshop on Computer Science and Engineering (WCSE 2023), pp. 269-274, June 16-18, 2023.