北斗系统测距码与载波一致性评估与验证

doi:10.16182/j.issn1004731x.joss.201810042

系统仿真学报 ›› 2018, Vol. 30 ›› Issue (10): 3949-3957.doi: 10.16182/j.issn1004731x.joss.201810042

北斗系统测距码与载波一致性评估与验证

李冬霞, 宋馥含, 刘瑞华

中国民航大学电子信息与自动化学院,天津 300300

收稿日期:2016-09-01 修回日期:2016-11-01 出版日期:2018-10-10 发布日期:2019-01-04
作者简介:李冬霞(1971-),女,陕西绥德,博士,副教授,研究方向为航空移动通信、甚高频数据链。
基金资助:
民航安全能力建设基金(AADSA0007)

Assessment and Verification of Code-carrier Coherence on BDS

Li Dongxia, Song Fuhan, Liu Ruihua

College of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China

Received:2016-09-01 Revised:2016-11-01 Online:2018-10-10 Published:2019-01-04

摘要/Abstract

摘要： 为验证北斗系统测距码与载波一致性,设计了北斗系统测距码与载波相位一致性监测与评估系统。设计码-载波偏离(Code-Carrier Divergence, CCD)监测器判断电离层异常状态,并基于状态检测结果分别使用Divergence-Free Smoothing (DFree)方法与Ionosphere-Free Smoothing(IFree)方法消除电离层延迟误差;根据三频模糊度分解模型解算整周模糊度,利用三频码伪距/载波相位组合法求解周跳;进行测距码与载波一致性评估与验证。实验数据表明北斗系统大部分卫星不同频率上测距码与载波一致性偏差波动范围较小,不超过6.1 m。

关键词: 测距码与载波一致性, CCD监测器, DFree, IFree

Abstract: In order to verify code-carrier coherence on BeiDou Navigation Satellite System (BDS), the monitoring and assessment system of code-carrier coherence on BDS is designed. Code-Carrier Divergence (CCD) monitor is designed to detect the anomaly status of ionosphere, and based on the detection results, ionosphere delay error is eliminated by using Divergence-Free Smoothing (DFree) or Ionosphere-Free Smoothing (IFree) separately. The values of integer ambiguity are calculated based on tri-frequency ambiguity decomposition model, and the cycle slip is detected by using tri-frequency pseudorange code and combination of carrier phase. Assessment and verification of code-carrier coherence can be conducted. It is proved by experimental results data that the deviations of code-carrier coherence on different frequencies are fluctuating within a little range for most BDS satellites and the range is less than 6.1 m.

Key words: code-carrier coherence, Code-carrier Divergence (CCD) Monitor, Divergence-Free Smoothing (DFree), Ionosphere-Free Smoothing (IFree)

中图分类号:

TN967.1

李冬霞, 宋馥含, 刘瑞华. 北斗系统测距码与载波一致性评估与验证[J]. 系统仿真学报, 2018, 30(10): 3949-3957.

Li Dongxia, Song Fuhan, Liu Ruihua. Assessment and Verification of Code-carrier Coherence on BDS[J]. Journal of System Simulation, 2018, 30(10): 3949-3957.

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北斗系统测距码与载波一致性评估与验证

Assessment and Verification of Code-carrier Coherence on BDS

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