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《Hydrographic Surveying and Charting》 2007-03
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The Algorithm of GPS Timing Receiver Autonomous Integrity Monitoring

WANG Ai-bing1,HE Hai-bo2,GUO Rui2,MENG Jian1(1.Institute of Surveying and Mapping,Information Engineering University,Zhengzhou,Henan,450052;2.61081 Troops,Beijing,100094)  
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.
【CateGory Index】: P228.4
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