摘要
平潭海峡公铁两用大桥连续运行参考站系统是国内跨海铁路桥梁工程中首个独立基于VRS的工程CORS系统。本文介绍了系统的组成和结构,分析了系统建设的特点、技术难点和关键点。主要内容包括:系统的设计与建设、参考站联测、高精度似大地水准面精化模型的确定以及系统的测试等。系统实时定位精度测试结果表明,基于VRS的网络RTK定位精度平面不大于±2cm,高程不大于±3cm,实现了系统的建设目标。
The GNSS continuously operating reference stations of Pingtan strait rail-cum-bridge（ abbr.PTDQ-CORS） was first GNSS CORS system in similar projects based on VRS. This article describes and analysis its composition,structure,characteristics,key technical problems,etc. The main contents include the design and construction of the system,measurement methods of the reference station,highprecision quasi-geoid determination in project area,and test of the system. The results of real-time positioning accuracy show that the network-RTK positioning accuracy of the system is better than ± 2cm in plane coordinate,and better than ± 3cm in elevation,achieved its goal.
出处
《工程勘察》
2016年第4期59-62,共4页
Geotechnical Investigation & Surveying
关键词
跨海大桥
GNSS连续运行参考站
似大地水准面
sea-crossing bridge
GNSS continuously operating reference stations
quasi-geoid
