“北斗+5G”联合定位与误差校正技术  

"BeiDou+5G"hybrid positioning and error correction technology

作　　者：曹晓春 张静 林开钦 孙天阳 李振海 李奇 CAO Xiaochun;ZHANG Jing;LIN Kaiqin;SUN Tianyang;LI Zhenhai;LI Qi(Zhejiang Highway&Water Transportation Engineering Consulting Corporation,Hangzhou 310006,China;GNSS System Engineering Center,China Academy of Aerospace Electronics Technology,Beijing 100094,China;Aerospace Times Feihong Technology Company Limited,Beijing 100094,China)

机构地区：[1]浙江公路水运工程咨询公司,杭州310006 [2]中国航天电子技术研究院卫星导航系统工程中心,北京100094 [3]航天时代飞鸿技术有限公司,北京100094

出　　处：《遥测遥控》2022年第6期70-77,共8页Journal of Telemetry,Tracking and Command

基　　金：浙江省交通运输厅科技计划项目(2021024、2021025、202211);国家自然科学基金(11873064、11503040)。

摘　　要：在边坡、城市峡谷、高架等复杂的公路交通定位环境中,存在海量多样的定位需求与复杂的定位环境,北斗信号穿越建筑空间时强度被削弱,产生严重的信号反射和衍射,使得北斗卫星信号难以到达和有效使用,系统可用率下降,无法提供可靠的定位服务。结合第五代移动通信网络(5G)系统高密度部署的特点,提出了一种北斗+5G联合定位模型以及基于最小二乘残差Helmert后验加权的误差校正方法。在复杂公路交通环境中,可以改善可见卫星数少的问题,优化卫星的几何构型,提高用户终端定位精度,能够为用户终端提供高精度、全天候、连续、实时的定位服务。实验表明,北斗+5G联合定位模型能够大幅提升复杂公路交通环境下的定位性能。In the complex highway traffic positioning environment such as slope,urban canyon and viaduct,there are massive and diverse positioning needs and complex positioning environment.The strength of BeiDou signal is weakened when it passes through the building space,and the building structure causes serious signal reflection and diffraction,which makes it difficult for BeiDou satellite signal to reach and use effectively,resulting in the decline of BeiDou system availability and the inability to provide reliable positioning services.Combined with the characteristics of high-density deployment of 5th generation mobile networks(5G)system,this paper proposes a BeiDou+5G hybrid positioning model and error correction method based on least squares residual Helmert posterior weighting.In the complex highway traffic environment,it can solve the problem of small number of visible satellites,optimize the geometric configuration of satellites,improve the positioning accuracy,and provide high-precision,all-weather,continuous,and real-time positioning for user terminals.Experiments show that the BeiDou+5G hybrid positioning model can greatly improve the positioning performance in complex highway traffic environment.

关 键 词：北斗 5G 公路环境 联合定位 

分 类 号：TN96[电子电信—信号与信息处理]