高速铁路连续运行GNSS带状控制网特性及其影响分析  

Characteristics and Impacts of Continuously Operating GNSS-based Strip Control Network for High-speed Railways

作　　者：杨怀志 李光荣 朱星盛 肖翔 孙永辉 Yang Huaizhi;Li Guangrong;Zhu Xingsheng;Xiao Xiang;Sun Yonghui(Equipment Safety Department,BeijingShanghai High Speed Railway Co.,Ltd.,Beijing 100038,China;Hwa Innovate Technology Corporation Ltd,,Beijing 100038,China)

机构地区：[1]京沪高速铁路股份有限公司设备安全部,北京100038 [2]北京华力方元科技有限公司,北京100038

出　　处：《铁道技术标准（中英文）》2023年第4期1-9,共9页Railway Technical Standard(Chinese & English)

基　　金：京沪高速铁路股份有限公司科技研究项目(京沪科研-2020-9)。

摘　　要：铁路工程控制网三网合一,采用GNSS连续运行参考站方式建网是发展的趋势。为满足高速铁路控制网高精度解算需求,本文以京沪高速铁路控制网为例,深入分析网型结构、观测时长、站间距离、卫星星座等因素对GNSS带状控制网特性及数据处理的影响。实验表明:增加带状控制网的测站密度可以改善控制网整体解算质量;结合基线解算质量、约束平差后的坐标点位精度和不同网型的误差特性来看,控制网解算质量随站间距离增加而降低,且增加观测时长,一定程度能够改善带状控制网的解算质量;采用北斗星座数据对带状控制网进行解算,其解算精度与GPS相当。In the context of railway control network integrating the survey control network,construction control network,and O&M control network into one,it is an inevitable trend to adopt GNSS-based(Global Navigation Satellite System-based)CORS(Continuous Operational Reference System)in network establishment.To cope with the highprecision resolving demands of HSR control network,this paper,taking the control network of Beijing-Shanghai highspeed railway as an example,thoroughly analyzes the impacts of such factors as network type and structure,observation duration,distances between stations,and satellite constellation,on the characteristics of GNSS strip control network and on data processing.Experimental results show that increased density of stations in strip control network can improve the network′s overall resolving quality;taking into consideration the baseline resolving quality,the coordinate point accuracy after constrained adjustment,and the error characteristics of different network types,the long the inter-station distance,the lower the control network's resolving quality,and longer observation duration can partly improve the resolving quality of strip control network;resolving the strip control network with BDS data has an accuracy comparative to GPS.

关 键 词：GNSS 带状控制网 网型结构 站间距离 卫星星座 

分 类 号：P228[天文地球—大地测量学与测量工程]