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The Algorithm of GPS Timing Receiver Autonomous Integrity Monitoring
Author(s): 
Pages: 28-30,39
Year: Issue:  3
Journal: HYDROGRAPHIC SURVEYING AND CHARTING

Keyword:  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;
Abstract: 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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