BDS CORS在复杂山区铁路测量中的应用精度分析  

Application Accuracy Analysis of BDS CORS in Railway Survey in Complex Mountainous Areas

作　　者：王博[1] 武瑞宏[1,2] 王涛 许双安 王建红[1] 张邵华[1] WANG Bo;WU Ruihong;WANG Tao;XU Shuangan;WANG Jianhong;ZHANG Shaohua(China Railway First Survey and Design Institute Group Co.Ltd.,Xi’an Shaanxi 710043,China;State Key Laboratory of Rail Transit Engineering Informatization(FSDI),Xi’an Shaanxi 710043,China)

机构地区：[1]中铁第一勘察设计院集团有限公司,陕西西安710043 [2]轨道交通工程信息化国家重点实验室(中铁一院),陕西西安710043

出　　处：《铁道建筑技术》2023年第5期193-198,共6页Railway Construction Technology

基　　金：陕西省重点研发项目(2021GY-266);中铁第一勘察设计院集团有限公司重点专项研发项目(2021KY73ZD(ZDZX)-01)。

摘　　要：北斗卫星导航系统(BDS)和连续运行参考站系统(CORS)的快速发展为我国铁路领域卫星定位测量工作提供了新的解决方案。为了研究基于铁路带状BDS CORS的测量技术在复杂山区铁路工程测量中应用的具体精度,本文在某复杂山区铁路沿线按30 km间距建设了铁路带状BDS CORS基准站网络,并部署了高精度位置服务云平台。分别采用基于BDS CORS的BDS单星座、全球定位系统(GPS)单星座和全球卫星导航系统(GNSS)多星座三种模式进行模拟长大隧道独立控制网建网测量、快速静态像控测量、实时动态差分定位(NRTK)测量的数据采集和处理工作,并以铁路沿线原基础平面控制网(CPⅠ)、线路平面控制网(CPⅡ)成果进行对比。研究结果表明:按30 km间距布设铁路带状BDS CORS基准站时,基于BDS CORS的BDS、GPS和GNSS三种模式均可用于长大隧道独立控制网建网测量、快速静态像控测量、NRTK测量,成果精度满足现行铁路测量规范的要求,可以代替传统方法进行测量作业。提出的部分精度指标可以为铁路工程建设各阶段BDS CORS建设及铁路测量应用相关规范的编写提供借鉴和参考。The rapid development of Beidou navigation satellite system(BDS)and continuously operating reference station system(CORS)provides a new solution for the satellite positioning and surveying work in the railway field of China.In order to study the specific accuracy of surveying technology based on railway band BDS CORS in railway engineering survey in complex mountainous areas,this paper built a railway band BDS CORS reference station network at a distance of 30 km along a railway in a complex mountainous area,and a high-precision location service cloud platform was developed simultaneously.Three modes of BDS single constellation,global positioning system(GPS)single constellation and global satellite navigation system(GNSS)multi constellation based on BDS CORS were respectively adopted for data acquisition and processing of simulated long tunnels independent control network construction survey,rapid static image control survey and network real-time kinematic(NRTK)survey,and the results of the original basic horizontal control network(CPⅠ)and the route horizontal control network(CPⅡ)along the railway were compared.The research results show that:when the railway band BDS CORS reference station is arranged at an interval of 30 km,the three modes of BDS,GPS and GNSS based on BDS CORS can be used for independent control network construction survey of long tunnels,rapid static image control survey,and NRTK survey.The accuracy of results meets the requirements of current railway survey codes,which can replace the traditional method for surveying operations.Some of the proposed accuracy indicators can provide reference for the construction of BDS CORS in various stages of railway engineering construction and the compilation of relevant codes for railway surveying applications.

关 键 词：北斗卫星导航系统 连续运行参考站系统 复杂山区铁路测量 独立控制网建网测量 快速静态像控测量 实时动态差分定位 精度分析 

分 类 号：P228[天文地球—大地测量学与测量工程] U212.2[天文地球—测绘科学与技术]