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