›› 2017, Vol. 37 ›› Issue (1): 41-48.doi: 10.16708/j.cnki.1000-758X.2017.0012

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PredictionofARAIMintegrityandavailabilitybasedonMHSSalgorithm

 LYU  Zong-Ping1 , NI  Yu-De2,*,  CHEN  Jun2, LIU  Rui-Hua2, ZHU  Jin-Fang3   

  1. 1NationalKeyLaboratoryofAirTrafficOperationSafetyTechnology,CivilAviationUniversityofChina,Tianjin300300,China
    2CollegeofElectronic&InformationandAutomation,CivilAviationUniversityofChina,Tianjin300300,China
    3Tianjin764CommunicationNavigationTechnologyCoLtd,Tianjin300210,China
  • Received:2016-05-18 Revised:2016-08-31 Online:2017-02-25 Published:2016-11-24

Abstract: Asthetraditionalreceiverautonomousintegritymonitoring(RAIM)merelyprovidesnon-precisionapproachintegritymonitoring,astrictermonitoringservicewon′tbeavailablebyRAIM.However,advancedreceiverautonomousintegritymonitoring(ARAIM),whichsupportslocalizerperformancewithverticalguidance,canmeettherequirementsofintegritymonitoringwithinprecisionapproach.Basedonmultiplehypothesissolutionseparation(MHSS)algorithmanddifferentconstellationsituation,thesolutionprocessofhorizontalprotectionlevel(HPL)andverticalprotectionlevel(VPL)forARAIMwasexpounded.FiveobservationairportslocatedatdifferentlongitudesandlatitudesinthenorthandsouthhemisphereswereselectedtosimulatethechangesoftheHPLandVPLunderdifferentcombinationofconstellationsystemsaswellastheaveragedistributiontrendoftheHPLandVPLaroundtheworldandglobalcoverageratiooftheARAIMavailability,whichmettheavailabilityrequirementsoftheLPV-200approachwith99%probability.ThesimulationresultsshowthattheHPLandVPLofthatfiveobservationairportscanmeettheintegrityrequirementsoftheLPV-200approachforboththeGPS&GLONASSdual-constellationandtheGPS&GLONASS&BDStri-constellation,however,ARAIMcannotfullysupporttherequirementsofintegritymonitoringfortheLPV-200approachworldwideundertheconditionoftheGPS&GLONASSdualconstellation,whereastheavailabilityandnavigationserviceperformancesoftheARAIMcanbegreatlyimprovedwhenGPS&GLONASS&BDStri-constellationisused.

Key words: advancedreceiver, autonomousintegritymonitoring, multiplehypothesissolutionseparation, localizerperformancewithverticalguidance-200, GlobalPositioningSystem, GlobalOrbitingNavigationSatelliteSystem, BeiDouNavigationSatelliteSystem