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一种基于单基站的协作定位算法.docx

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一种基于单基站的协作定位算法 Title:ACollaborativeLocalizationAlgorithmbasedonSingleBaseStation Abstract: Inrecentyears,thedemandforaccurateandreliablepositioningsystemshasgrownsignificantlyinvariousindustries.GlobalNavigationSatelliteSystems(GNSS)remainthemostcommonlyusedtechnologyforpositioning.However,therearescenarioswhereGNSSalonemaynotprovideaccuratelocationinformation.Insuchcases,collaborativelocalizationalgorithmscanplayacrucialroleinimprovingtheaccuracyandreliabilityofpositionestimation.Thispaperpresentsacollaborativelocalizationalgorithmbasedonasinglebasestation.TheproposedalgorithmleveragesthecooperationofmultiplemobiledevicestoenhancethepositioningaccuracyinscenarioswheretraditionalGNSSpositioningmaybechallenged. Keywords:CollaborativeLocalization,SingleBaseStation,PositioningAccuracy,MobileDevices 1.Introduction Localizationinwirelessnetworkshasbecomeafundamentalrequirementduetoitsextensiveapplicationsinnavigation,tracking,andlocation-basedservices.TraditionalGNSS-basedlocalizationprovidesaccurateresultsinmostoutdoorscenarios.However,urbancanyons,indoorenvironments,andcertainobstructedareascancausedegradationinGNSSperformance.Toaddresssuchchallenges,collaborativelocalizationalgorithmshavebeenproposed,whichutilizeinformationfrommultiplemobiledevicesworkingtogethertoimprovetheaccuracyofpositionestimation.Inthispaper,wepresentacollaborativelocalizationalgorithmbasedonasinglebasestation. 2.SystemOverview Theproposedcollaborativelocalizationalgorithmtakesadvantageofasinglebasestationandmultiplemobiledevices.Thebasestationservesasareferencepoint,providingknownlocationinformation.Themobiledevicesinthenetworkutilizethereceivedsignalstrength(RSS)andtimeofarrival(TOA)measurementstoestimatetheirownpositionsandimproveaccuracythroughcooperativepositioning. 3.AlgorithmDescription 3.1RSS-basedPositioning EachmobiledevicewithinthenetworkmeasurestheRSSfromthesignalstransmittedbythebasestation.BycomparingthereceivedRSSvaluewiththeknownRSSvalueatthereferencelocation,thedistancebetweenth