北斗系统RNSS服务下行导航信号应用模式及使用建议  

Application Mode and Usage Suggestion of BDS Downlink Navigation Signals for RNSS Service

作　　者：高为广[1] 隋叶叶 李敏[2] 胡志刚[2] 宿晨庚[1] 苏牡丹[1] GAO Weiguang;SUI Yeye;LI Min;HU Zhigang;SU Chengeng;SU Mudan(Beijing Institute of Tracking and Telecommunications Technology,Beijing 100094,China;GNSS Research Center,Wuhan University,Wuhan 430079,China)

机构地区：[1]北京跟踪与通信技术研究所,北京100094 [2]武汉大学卫星导航定位技术研究中心,湖北武汉430079

出　　处：《武汉大学学报（信息科学版）》2023年第9期1444-1454,共11页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金(41974041);国防科技卓越青年科学基金(2021-JCJQ-ZQ-015)。

摘　　要：北斗系统已向全球用户提供3个频段5个民用信号(B1I、B1C、B2a、B2b、B3I)的导航定位和授时服务,结合北斗系统导航信号特点及北斗系统建设发展规划,采用长期积累的实测数据和动态车载实验数据对北斗下行导航信号进行了测试和评估,提出了多频选择模式下的双频、三频一阶消电离层和三频二阶消电离层的最优多路径组合方法,讨论并给出了用户单频、双频、三频定位模式及使用建议:单频用户优先使用B1C、B2a,双频用户优先使用B1C/B2a组合,三频用户优先使用B1C/B2a/B3I,为用户正确使用北斗下行导航信号提供支撑。Objectives:BeiDou navigation satellite system(BDS)has provided navigation,positioning and time service of five signals(B1I,B1C,B2a,B2b,B3I)in three frequency bands to users all over the world.In combination with the characteristics of BDS signals and BDS construction and development plan‑ning,BDS downlink navigation signals have been tested and evaluated using long-term accumulated mea‑sured data and dynamic on-board experimental data.Methods:The optimal multi-path combination method of dual frequency and triple frequency first order and triple frequency second order ionosphere free in multi frequency selection mode is proposed.Results and Conclusions:The user single frequency,dual frequency and triple frequency positioning modes and their use suggestions are discussed and given:Single frequency users give priority to use B1C and B2a,dual frequency users give priority to use B1C/B2a combi‑nation,and triple frequency users give priority to use B1C/B2a/B3I,providing support for users to correct‑ly use BeiDou downlink navigation signals.

关 键 词：北斗系统 下行导航信号 多路径 伪距单点定位 精密单点定位 应用模式 

分 类 号：P228[天文地球—大地测量学与测量工程]