Abstract: AprospectiveresearchforusingtheBeiDouRegionalNavigationSatelliteSystemtocivilaviationapplicationwasmadebasedonthecharacteristicsof“5GEO+5IGSO+4MEO” constellationandrequirementsofnonpreciseapproach(NPA)incivilaviation.Forthreeindexesthevisibilityofspacevehicle，dilutionofprecision(DOP)valuesandhorizontalprotectionlevel(HPL)value,thestatisticalcharacteristicsinAsiaPacificareaandthecomparisonofthreeindexesfor4designateduserlocationswerepresentedbysimulationandanalysis.TheresultsshowthattheBeiDouRegionalNavigationSatelliteSystemhastheabilitytoprovidetheidealnumberofsatelliteinsight,bettervaluesofDOPandHPL,andcanmeetthecurrentneedsoftheabovethreeindexesinNPAflightphase.

Key words: Constellationperformance, Satellitevisibility, Dilutionofprecisionvalue, Receiverautonomousintegritymonitoring, BeiDouregionalnavigationsatellitesystem