宇航计测技术 ›› 2017, Vol. 37 ›› Issue (2): 81-85.doi: 10.12060/j.issn.1000-7202.2017.02.17

• 论文 • 上一篇    下一篇

北斗D2导航电文解析和完好性性能分析

刘瑞华1；陈莹超1；吕小平1   

  1. 1、中国民航大学 电子信息与自动化学院，天津 300300
  • 出版日期:2017-04-25 发布日期:2017-04-25
  • 作者简介:刘瑞华（1965-），男，教授、 研究生导师, 主要研究方向:卫星导航及惯性导航和组合导航。
  • 基金资助:
    国家重点研发计划项目“广域航空安全监控技术及应用”（2016YFB0502402）；民航安全能力建设项目“北斗机载设备技术标准规定与应用研究”（AADSA0007）

Analysis of D2 Navigation Message and Integrity Performance of BDS

LIU Rui-hua1；CHEN Ying-chao1；LV Xiao-ping1   

  1. 1、School of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China
  • Online:2017-04-25 Published:2017-04-25

PDF (PC)

904

摘要： 为评估北斗D2导航电文对系统空间信号完好性影响，对D2导航电文结构和内容进行研究。首先，通过基本导航信息的解析，给出了确定卫星位置和用户位置过程所需的信息和时间，并对受卫星星历和时钟影响的用户测距误差做了说明，介绍了电离层误差、对流层误差改正模型。然后，通过增强服务信息的解析，论述了完好性信息（RURA、UDRE）及格网电离层延迟的计算方法。最后给出了使用完好性信息、用户局部误差获取用户定位误差保护级的算法。

关键词: 北斗, 导航电文, 完好性, 保护级

Abstract: In order to evaluate the effect of BeiDou satellite system(BDS) D2 navigation message to signal in space (SIS) integrity, the BeiDou D2 navigation message was researched in the structure and the content. At first,Through the analysis of basic navigation information, the message and time used in the process for determining satellite position and user position were given. Simultaneously, the user ranging error which influenced by satellite ephemeris and clock was illustrated, the ionosphere and tropospheric error correction model were introduced either. Then, through the analysis of enhanced service information, the calculation method of integrity information (RURA, UDRE) and grid ionospheric delay were discussed. Finally, the calculation method of protection level (PL) for user positioning error that use integrity information and user local error was given.

Key words: BeiDou, Navigation message, Integrity, Protection level

京ICP备09048426号-4　 京公网安备 11010602060144号　版权所有 © 《宇航计测技术》编辑部