| 北斗卫星导航系统完好性参数研究 |
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| 引用本文： | 崔瑞云,倪育德,王琳琳,刘逸.北斗卫星导航系统完好性参数研究[J].现代导航,2015,6(1):17-22. |
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| 作者姓名： | 崔瑞云 倪育德 王琳琳 刘逸 |
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| 作者单位： | 中国民航大学电子信息工程学院,天津 300300 |
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| 摘 要： | 北斗卫星导航系统完好性参数包括用户差分距离误差(UDRE)、区域用户距离精度 (RURA)和格网点电离层垂直延迟改正数误差(GIVE)。本文研究了 UDRE、RURA 及 GIVE 的算法，分析仿真了 UDRE 和 RURA 一天中的变化，给出了格网点(IGP)97(40 °N，115°E) 一天内 GIVE 的变化曲线，验证了算法的可行性。仿真结果表明，UDRE、RURA 以及 GIVE 的算法均能够以 99.9%的置信度限定等效钟差改正数和格网点电离层延迟改正误差，为用户提供可靠的完好性监测。
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| 关 键 词： | 北斗系统 完好性 UDRE RURA GIVE |
Research on Integrity Parameters of BeiDou Satellite Navigation System |
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| Authors: | CUI Ruiyun NI Yude WANG Linlin LIU Yi |
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| Abstract: | The integrity parameters of BeiDou satellite navigation system include user differential range error (UDRE), regional user range accuracy (RURA), and grid ionosphere vertical error (GIVE). In this paper, the algorithms about UDRE, RURA and GIVE are researched, the variation of the UDRE and RURA in a whole day are analyzed and simulated, the variation curve of the GIVE in a whole day is presented about ionospheric grid point(IGP) No. 97(40?N, 115?E), and the feasibility of the algorithms are verified. The simulation shows that the algorithms of UDRE, RURA and GIVE can limit the equivalent clock error and the grid point ionospheric delay error with a confidence level of 99.9%, and reliable integrity monitoring can be provided for users by these parameters. |
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