A PERSISTENT SCATTERER INTERFEROMETRY PROCEDURE TO MONITOR URBAN SUBSIDENCE

International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences

Crosetto, M.^1¹  Monserrat, O.^1²  Barra, A.^1³ 

[1] Centre Tecnològic de Telecomunicacions de Catalunya (CTTC/CERCA), Division of Geomatics, 08860 Castelldefels (Barcelona), Spain ITU^1;Institute of Geodesy, University of Warmia and Mazury in Olsztyn, 10719 Olsztyn, Poland^2;University of Milan, Department of Earth Sciences, 20129 Milan, Italy^3

关键词: radar;    interferometry;    atmospheric component;    estimation;    monitoring;   

DOI  :  10.5194/isprs-archives-XLII-2-W13-1921-2019

学科分类：地球科学(综合)

来源: Copernicus Publications

【 摘 要 】

This paper describes a Persistent Scatterer Interferometry procedure for deformation monitoring. Its more original part concerns an approach to estimate the atmospheric phase component. The procedure can be used to monitor deformation areas that are relatively small and are surrounded by stable areas. The proposed procedure is described step by step. The procedure can be applied using SAR data coming from different sensors. However, in this work we discuss results obtained using Sentinel-1 data. A case study is described, where the deformation is caused by water pumping associated with construction works. In this case study, a stack of 78 Sentinel-1 images were analysed. The main part of the paper concerns the analysis of the atmospheric component. A comprehensive characterization of this component is first described, considering the original non-filtered phases. This is followed by the characterization of the residual filtered phases. This analysis highlights the goodness of the proposed procedure. This is further confirmed by the analysis of two deformation time series. The procedure can work with any type of deformation phenomena, provided that its spatial extension is sufficiently small.

【 授权许可】

CC BY