基于CORS的城市轨道交通GPS网的布设及精度分析  

GPS Network Layout and Accuracy Analysis of Urban Rail Transit Based on CORS

作　　者：林飞[1] 

机构地区：[1]杭州市勘测设计研究院,浙江杭州310012

出　　处：《城市勘测》2017年第3期83-85,89,共4页Urban Geotechnical Investigation & Surveying

摘　　要：就城市CORS系统作为起算数据布设轨道交通GPS控制网的情况进行了介绍,并且依托杭州至临安城际铁路工程GPS控制网测量项目,通过采用分级平差法,解决了因CORS站点距离线路太远而带来的精度问题,并和整体式平差的结果做了各项对比,说明分级平差所得结果更加可靠。In this paper,the process of laying the GPS control network of the rail transit with the CORS station as the starting data was introduced,the accuracy is usually affected because some CORS point may be too far away from the line.This paper relies on the GPS control network project of Hangzhou-Linan intercity railway project,and adopts the hierarchical adjustment method to solve the precision problem brought by the long baseline because some CORS point may be too far away from the line.And the comparison with the result of unified adjustment shows that the results of classification adjustment are more reliable.

关 键 词：CORS GPS 分级平差 精度对比 

分 类 号：P228[天文地球—大地测量学与测量工程]