Integrated GPS and interferometric SAR techniques for ground subsidence monitoring

地面沉降监测中的GPS和干涉SAR综合技术。全球定位系统（GPS）通常用于测量由于地下采矿和类似活动引起的地面沉降。然而，全球定位系统技术不能轻易地测量足够密集的点网格，以监测大面积的沉降。该项目旨在通过对合成孔径雷达（SAR）图像进行干涉处理来增强GPS实地测量。本研究的成果包括最佳整合模式，操作软件系统和质量控制措施。悉尼南部的一个测试区，地下采煤造成的沉降对地面基础设施产生了重大的不利影响，将在三年内进行监测。

Integrated GPS and interferometric SAR techniques for ground subsidence monitoring. The Global Positioning System (GPS) is commonly used for measuring ground subsidence due to underground mining and similar activities. However, GPS techniques cannot easily survey a dense enough grid of points to monitor subsidence across a wide area. This project aims to densify the GPS field measurements with the interferometric processing of Synthetic Aperture Radar (SAR) images. The outcomes of this research include optimal integration models, operational software systems and quality-control measures. A test area south of Sydney, where subsidence caused by underground coal mining is having significant detrimental effect on surface infrastructure, will be monitored over a three-year period.