›› 2016, Vol. 36 ›› Issue (2): 20-.doi: 10.16708/j.cnki.1000-758X.2016.0022

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SimulationandresearchonRAIMalgorithmbuiltincivilaviationairbornereceiverbasedonBeiDousatellitesystems

LIU  Rui-Hua, DENG  Ming-Zhi, WEI  Bao-Guo, XING  Zhao-Dong   

  1. 1CollegeofElectronicInformationandAutomation,CAUC,Tianjin300300,China
    2The54thResearchInstituteofChinaElectronicsTechnologyGroupCorporation,Shijiazhuang050081,China
  • Received:2015-07-02 Revised:2015-12-23 Online:2016-04-25 Published:2016-02-24

Abstract: Receiverautonomousintegritymonitoring(RAIM)algorithmisalreadymatureintheory.ButastoBeiDounavigationsatellitesystem(BDS),thereisrareanalysisabouttheperformanceofRAIMwiththeobserveddata.AccordingtotheconstellationstatusofBDSsystemandtheperformanceofopenservice,basedontherequirementofnonprecisionapproachincivilaviationfield,thesimulationandresearchonRAIMwerepresented.Firstly,theavailabilityofRAIMinAsiaPacificwascalculated.Then,thefunctionandcapabilityoffailuredetectionandidentificationwiththeobserveddatafromNovAtelreceiverwereanalyzedindifferentscenesandfaulttypes.Thesimulationresultsshowthattheaverageofvisiblesatelliteismorethan7,andtheHPLvaluesarelessthan500meters.Furthermore,themeasuredresearchshowsthattheRAIMcandetecttheanomalypseudorange.Thatistosay,BDSsystemmettheneedsoftheRAIM.TheconclusionisthattheBDSissuitableforRAIM,andcanprovidetherequirednavigationperformance(RNP)fornonprecisionapproach(NPA)inthecivilaviationfield.

Key words: BeiDousatellitenavigationsystem, integrity, BeiDouobserveddata, nonprecisionapproach, algorithm;simulation