一种伽利略信号跟踪的多路径消除方法(英文)-豆柴文库

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一种伽利略信号跟踪的多路径消除方法(英文)
Title:AMulti-pathEliminationMethodforGalileoSignalTracking
Abstract:
WiththeincreasingpopularityofGlobalNavigationSatelliteSystems(GNSS),accurateandreliablesignaltrackingisofparamountimportance.However,GNSSsignalsaresusceptibletomulti-pathinterference,leadingtodegradationinsignalqualityandnavigationaccuracy.Thispaperproposesanovelmulti-patheliminationmethodspecificallydesignedforGalileosignaltrackinginordertomitigatethisundesirableeffect.Theproposedmethodcombinesadvancedsignalprocessingtechniquestoeffectivelyidentify,mitigate,andeliminatemulti-pathinterferenceinthereceivedGalileosignals.
Introduction:
TheGalileosatellitesystem,developedbytheEuropeanUnion,servesasanessentialcontributortotheGNSSnetworkandprovidesglobalpositioningandnavigationservices.However,thepresenceofmultipleinterferencepaths,causedbysignalreflectionsanddiffractions,canresultinsignalfading,leadingtoincreasederrorsinpositioningandnavigationsolutions.Therefore,developingrobustmulti-patheliminationmethodsiscrucialtoenhancetheperformanceofGalileosignaltracking.
LiteratureReview:
Numerousmulti-patheliminationtechniqueshavebeenproposed,focusingonvariousGNSSsystems.Thesetechniquesincludeadaptivefilteringalgorithms,maximumlikelihoodestimation,andtime-frequencyanalysismethods.Whilethesemethodshaveshownpromiseineliminatingmulti-pathinterferenceinotherGNSSsystems,theymaynotbedirectlyapplicabletoGalileoduetoitsuniquesignalcharacteristicsandsystemdesign.Therefore,thedevelopmentofaspecializedmulti-patheliminationmethodforGalileosignaltrackingiswarranted.
ProposedMethod:
Theproposedmulti-patheliminationmethodforGalileosignaltrackingcombinesthestrengthsofseveralsignalprocessingtechniquestoensurerobustandaccuratetrackingofGalileosignals.Themethodconsistsofthefollowingsteps:
1.Multi-pathDetection:ThereceivedGalileosignalsareanalyzedtoidentifythepresenceofmulti-pathinterference.Thiscanbeachievedthroughexaminingtheauto-correlationfunctionandsignalpowerdistribution.
2.SignalReconstruction:Oncemul