抄録
The Global Positioning System (GPS) is an innovative surveying system using artificial satellites currently under development by the US Department of Defense. This system has the potential to measure the ground movements of an extensive area. This report outlines GPS and describes the accuracy of GPS surveying. Several case studies about applications of GPS to displacement measurements, such as monitoring subsidence due to groundwater withdrawal, displacements of high cut slopes, crustal deformation, etc., are introduced. It can be concluded that GPS has great potential and will be extremely useful for measuring ground displacements in various rock engineering projects.
