Integrated GPS and interferometric SAR techniques for ground subsidence monitoring

地面沉降监测的GPS与干涉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，GPS技术不能轻易地测量足够密集的点网格，以监测大范围内的沉降情况。本项目旨在通过对合成孔径雷达（SAR）图像进行干涉处理，提高GPS野外测量的密度。本文的研究成果包括最优集成模型、可操作软件系统和质量控制措施。在悉尼南部的一个试验区，地下煤矿开采造成的下沉对地面基础设施造成了严重的不利影响，将在三年的时间内进行监测。

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.