中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 21 Special 3 December 2011 |
（1. Key Laboratory for Land Environment and Disaster Monitoring of State Bureau of Surveying and Mapping,
China University of Mining and Technology, Xuzhou 221116, China;
2. School of Environment and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China）
Abstract:Based on ranging intersection theory, a new method which is simple and easy to operate was proposed for data collection in the mine surface deformation monitoring with GPS-RTK centering rod measurements. It can fully eliminate the inevitable shaking error and the vertical deflection, and to some extent weaken the multipath effect on the estimates of coordinates in a relatively short period of time, using high-frequency observations. The results show that three-dimensional coordinates with a height accuracy better than 1 cm, horizontal accuracy better than 2−4 cm can be achieved through only 15−30 s continuous observation by 20 Hz high- frequency and effectively improve the measurement accuracy and efficiency of RTK, fully satisfying the high-speed and high- precision data acquisition in mine surface subsidence deformation monitoring.
Key words: GPS; rover pole; multipath delay; deformation monitoring
