摘要
GPS技术已发展成为监测地面沉降的主要方法之一。本文通过精密单点定位技术处理天津12个CORS站2006年至2009年的观测数据以获取其沉降信息。数值结果表明,在定位精度方面精密单点定位和相对定位结果相当,而在监测沉降速率方面精密单点定位与水准测量相吻合。所以利用精密单点定位技术进行大范围的地面沉降监测是可行、可靠的。
GPS technology has been developed into a major ground subsidence monitoring method.This paper studies ground subsidence monitoring based on precise point positioning through processing GPS data of Tianjin 12 CORS stations from 2006 to 2009.The results show that the positioning accuracy of precise point positioning is almost similar to that of relative positioning method,and the ground subsidence rates obtained by GPS precise point positioning coincides with traditional precise leveling.Therefore,the use of precise point positioning technology for large-scale ground subsidence monitoring is feasible and reliable.
出处
《工程勘察》
2014年第9期77-81,共5页
Geotechnical Investigation & Surveying
关键词
精密单点定位
地面沉降监测
CORS站
precise point positioning
ground subsidence monitoring
continuously operation reference station
