应用时间序列InSAR技术监测上海磁悬浮列车专线形变

摘要

新一代高分辨率、短重访周期SAR卫星的发射运行，使得InSAR技术不仅能满足大范围地表沉降监测的数据需求，还可以监测到大型人工线状地物的形变，使得对短周期微小形变的监测和预警成为可能。本文以上海市在运营的磁悬浮列车专线为研究对象，利用时间序列分析方法对2011年9月~2012年10月期间的15景TerraSAR-X数据进行了处理和分析，实验结果表明高分辨率SAR数据可以用于公共交通设施微小形变的监测，在公共安全领域具有广阔的应用前景。%The recently available high-resolution, short revisit-cycle, radar satel ite data can not only be used to monitor land subsidence over large areas, but also to provide information regarding the deformation of large buildings and the transportation network; it has also made short-term smal-scale deformation monitoring possible. In this paper, time-series analysis of InSAR data is carried out to detect deformation of the Shanghai Maglev track. The dataset of 15 TerraSAR-X images was acquired between September 2011 and October 2012. Experimental results show that high-resolution SAR data may be suitable for operational monitoring of deformation affecting public infrastructure.