基于北斗多频的单历元基线定位方法  

Single-Epoch baseline positioning method based on BDS multi-frequency

作　　者：邵沛涵 高成发[1] 张瑞成 刘濛濛 王剑超 SHAO Peihan;GAO Chengfa;ZHANG Ruicheng;LIU Mengmeng;WANG Jianchao(School of Transportation,Southeast University,Nanjing 211189,China)

机构地区：[1]东南大学交通学院,南京211189

出　　处：《测绘工程》2023年第2期49-54,共6页Engineering of Surveying and Mapping

基　　金：河北省交通运输厅科技计划资助项目(JD-202011)。

摘　　要：随着北斗三号卫星导航系统完成全球组网并正式开通,我国成为世界上第三个独立拥有全球卫星导航系统的国家,北斗卫星定位精度和可靠性进一步提升。目前北斗二号卫星可播发三频观测信号,北斗三号卫星可播发五频观测信号,研究多频组合定位对于实现模糊度快速固定、提高定位精度具有重要意义。文中分别给出北斗二号三频和北斗三号四频观测值的线性组合,并将其视为不同的卫星系统进行融合定位,最后分析短基线条件下的定位精度。结果表明本方法能够实现短基线模糊度单历元固定,定位精度可达cm级。As the BDS-3 satellite navigation system completes global networking and officially opens,China has become the third country in the world to independently own a global satellite navigation system,and the positioning accuracy and reliability of the BDS have been further improved.At present,BDS-2 can broadcast three frequency observation signals,and BDS-3 can broadcast five frequency observation signals.The research on multi frequency combined positioning is of great significance to achieve rapid fixation of ambiguity and improve positioning accuracy.In this paper,the linear combination of BDS-2 triple-frequency and BDS-3 quad-frequency observations is given respectively,and they are regarded as different satellite systems for fusion positioning.Finally,the positioning accuracy under the condition of short baseline is analyzed.The results show that this method can achieve the single epoch ambiguity of short baseline,and the positioning accuracy can reach centimeter level.

关 键 词：北斗 多频 模糊度 单历元 

分 类 号：P228[天文地球—大地测量学与测量工程]