北斗三号VRS在铁路测量中定位性能研究

Research on Positioning Performance of Beidou-3 VRS In Railway Survey

在铁路施工前部署CORS平台,可有效避免传统测量手段的缺陷,显著提升外业工作的效率和铁路工程的智能化水平。为评估基于BDS3系统的VRS在铁路工程测量中的优势,本文利用某高铁段CORS网络的观测数据,对比测试了通过BDS2和BDS3系统生成的VRS的精度。结果表明,在多系统方面,BDS3/GNSSVRS比BDS2/GNSS-VRS在N、E方向上精度分别提高56.8%和40.7%,U方向则提高13.8%;而在单系统方面,BDS3-VRS比BDS2-VRS在N、E方向上精度分别提高74.3%和29.8%,U方向则提高52.1%。

Deploying the CORS platform before railway construction can effectively avoid the defects of traditional measurement methods,significantly improve the efficiency of field work and the intelligent level of railway engineering.In order to evaluate the advantages of VRS based on BDS3 system in railway engineering measurement,this paper uses the observation data of CORS network of a high-speed railway section to compare and test the accuracy of VRS generated by BDS2 and BDS3 systems.The results show that in terms of multi-system,BDS3/GNSS-VRS is 56.8%and 40.7%higher than BDS2/GNSS-VRS in the N and E directions,and 13.8%higher in the U direction;while in the single system,BDS3-VRS Compared with BDS2-VRS,the accuracy in the N and E directions is increased by 74.3%and 29.8%,respectively,and the U direction is increased by 52.1%.