摘要
针对如何提升北斗卫星导航定位基准站网实时差分增强定位的安全可信性的问题,该文提出了一种多基准站参考一致性监测算法,将4个基准站伪距改正量均值和某一基准站未参与计算的伪距改正量均值间做差求取伪距B值,并对该值进行检验。同时对接收机钟差进行3倍中误差离散度进行校验以消除卫星引起的相同误差项,按照一定逻辑判断基准站网伪距改正量故障事件。仿真和实测结果表明,该算法能够有效监测北斗地球静止轨道(GEO)、倾斜地球同步轨道(IGSO)和中地球轨道(MEO)卫星或基准站伪距异常大于1 m的故障事件,为低空飞行等提供定位保障。
In order to enhance the security and credibility of real-time kinematic localization provided by the Beidou Navigation Satellite System reference station network,an algorithm of multiple reference consistency check with multi-reference stations was proposed in this paper.The difference between the mean of the pseudo-range correction of the four reference stations and the mean of the pseudo-range correction of a specific reference station that did not participate in the calculation was made to obtain the pseudo-range B-value,and the value was tested.At the same time,the receiver clock offsets was verified by triple mean square error dispersion to eliminate the same error term caused by a satellite,and the fault event of the pseudo-range corection of the reference station network was judged according to a certain logic.The simulation and experimental results showed that the algorithm could effectively verify the fault events of Beidou geostationary orbit(GEO),inclined geosynchronous orbit(IGSO)or middle earth orbit(MEO)satellite or reference station with anomalies of pseudo-ranges greater than 1 m,and provided positioning guarantee for low-altitude flight.
作者
李庚辰
徐彦田
罗力
韩忠倫
于亚杰
曲麒霖
王春杨
LI Gengchen;XU Yantian;LUO Li;HAN Zhonglun;YU Yajie;QU Qilin;WANG Chunyang(School of Geomatics,Liaoning Technical University,Fuxin,Liaoning 123000,China;Chinese Academy of Surveying&Mapping,Beijing 100036,China;Service Center of Natural Resources Affairs of Liaoning Province,Shenyang 110034,China;The 2nd Surveying and Mapping Institute of Hebei Province,Shijiazhuang 050031,China;College of Geodesy and Geomatics,Shandong University of Science and Technology,Qingdao,Shandong 266590,China)
出处
《测绘科学》
北大核心
2025年第6期36-44,共9页
Science of Surveying and Mapping
基金
国家重点研发计划课题项目(2021YFB3900802)。
关键词
基准站网
多参考一致性监测
北斗卫星导航定位
伪距修正量
B值
reference station network
multiple reference consistency check
Beidou navigation satellite system
pseudo-range correction
B-value
