基于uwb室内定位系统的时域天线分析

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1、ABSTRACTABSTRACTSinceUltra-wideBand(UWB)positioningtechnologybasedonshockpulsesystemhasanuniqueadvantageinshortdistanceprecisepositioning,ithasbeenmoreandmorepopularinindoorpositioningapplicationrecently.Time-domainantennasshoulderthecommunicationtaskasthecorecomponentofUWBindoorpositio

2、ningsystemandaffectsthequalityofsignaltransmission.ThispaperlaunchedaseriesofresearchontheUWBtime-domainantennainindoorpositioningsystem,analysismethodoftime-domainperformanceanddesignofantennaincluded.Maincontentsareasfollows:1.DesignoflinearlypolarizedantennasAccordingtotheapplication

3、requirementsofintelligenttransportationsystem,monopoleantennaisdesignedforshortdistanceapplicationandbow-tieforfardistanceapplicationasbasestationantennas.Disconeantennaisdesignedastagantennaaccordingtoitsapplicationenvironment.Throughfrequency-domainsimulationandtest,resultsshowthatthe

4、designedantennascanmeetthedemandofapplication.2.DesignofcircularlypolarizedantennaAccordingtotheapplicationrequirementsofrotator,acircularlypolarizedtime-domainantennaisdesignedastagantennatoavoidpolarizationmismatch,whichisdesignedfromArchimedesspiralantenna.Frequency-domainsimulationa

5、ndtestshowthatthedesignedantennascanmeetthedemandofapplication.3.Analysisoftime-domainperformancesAccordingtotheneedsofevaluation,themethodsofsimulationandtestarestudiedtoanalyzetheantenna’stimedomainperformance,andsomeoperationalmethodsaregiven.Time-domainperformancesofthedesignedanten

6、nasinthepaperareanalyzed.Resultsshowthattime-domainanalysisisconsistentwithfrequency-domainsimulationandtest.Ontheoneband,theconsistencyprovestheaccuracyofanalysismethod,andontheotherhanditshowsthatthedesignedantennadesignsconformstotherequirementsofthesystem.Keywords:UWBpositioningtech

7、nology,time-domainantenna,intelligenttransportation,circularpolarizationII目录目录第一章绪论....................................................................................................................11.1研究背景和意义....................................................................