| GPS测时的接收机自主完好性监测算法 |
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| 引用本文： | 王爱兵,何海波,郭睿,孟键.GPS测时的接收机自主完好性监测算法[J].海洋测绘,2007,27(3):28-30. |
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| 作者姓名： | 王爱兵 何海波 郭睿 孟键 |
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| 作者单位： | 1. 解放军信息工程大学,测绘学院,河南,郑州,450052
2. 61081部队,北京,100094 |
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| 摘 要： | 描述了测时接收机自主完好性监测(T-RAIM)算法,给定漏检率和误警率,解算出了不同可视卫星数对应的故障检测门限值和非中心化参数,模拟卫星钟出现ramp误差和step误差两种故障情况,分析了异常卫星钟差对故障检测的检验统计量、接收机钟差及其标准差造成的影响。结果表明,T-RAIM算法能很好地解决GPS测时的完好性问题,在一定程度上保证了测时精度的稳定。
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| 关 键 词： | GPS测时 T-RAIM 故障检测 故障识别 时间误差保护级别 时间告警限值 |
| 文章编号： | 1671-3044（2007）02-0028-03 |
| 修稿时间： | 2006-10-162007-01-16 |
The Algorithm of GPS Timing Receiver Autonomous Integrity Monitoring |
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| WANG Ai-bing,HE Hai-bo,GUO Rui,MENG Jian.The Algorithm of GPS Timing Receiver Autonomous Integrity Monitoring[J].Hydrographic Surveying and Charting,2007,27(3):28-30. |
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| Authors: | WANG Ai-bing HE Hai-bo GUO Rui MENG Jian |
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| Institution: | 1. Institute of Surveying and Mapping, Information Engineering University,Zhengzhou, Henan,450052 ; 2. 61081 Troops, Beijing, 100094 |
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| Abstract: | In this paper,the algorithm of timing receiver autonomous integrity monitoring(T-RAIM) is introduced.Provided the missed detection and false alarm probabilities,the threshold of failure detection and non-centrality parameter corresponding with different number of the visible satellites are calculated.Then two situations,the ramp and step error of the satellite clock,are simulated.The effects of abnormal satellite clock errors on the statistics of failure detection,receiver clock offset and its standard deviation,are analyzed.The result shows that the algorithm can solve the integrity of GPS timing well and ensure the stability of the timing's accuracy to a certain extent. |
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| Keywords: | GPS timing T-RAIM failure detection failure isolation TPL TAL |
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