URBAN MONITORING BASED ON SENTINEL-1 DATA USING PERMANENT SCATTERER INTERFEROMETRY AND SAR TOMOGRAPHY

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

Crosetto, M.^1¹  Budillon, A.^2² 

[1] Centre Tecnològic de Telecomunicacions de Catalunya (CTTC/CERCA), Geomatics Division, Av. Gauss, 7, E-08860 Castelldefels (Barcelona), Spain^1;Dipartimento di Ingegneria, Università degli Studi di Napoli “Parthenope”, Centro Direzionale, Isola C4, 80143 Naples, Italy^2

关键词: SAR;    Sentinel-1;    Interferometry;    Persistent Scatterer Interferometry;    SAR tomography;    inter-comparison;   

DOI  :  10.5194/isprs-archives-XLII-3-235-2018

学科分类：地球科学(综合)

来源: Copernicus Publications

【 摘 要 】

A lot of research and development has been devoted to the exploitation of satellite SAR images for deformation measurement and monitoring purposes since Differential Interferometric Synthetic Apertura Radar (InSAR) was first described in 1989. In this work, we consider two main classes of advanced DInSAR techniques: Persistent Scatterer Interferometry and Tomographic SAR. Both techniques make use of multiple SAR images acquired over the same site and advanced procedures to separate the deformation component from the other phase components, such as the residual topographic component, the atmospheric component, the thermal expansion component and the phase noise. TomoSAR offers the advantage of detecting either single scatterers presenting stable proprieties over time (Persistent Scatterers) and multiple scatterers interfering within the same range-azimuth resolution cell, a significant improvement for urban areas monitoring. This paper addresses a preliminary inter-comparison of the results of both techniques, for a test site located in the metropolitan area of Barcelona (Spain), where interferometric Sentinel-1 data were analysed.

【 授权许可】

CC BY