StatisticalCharacteristicsofSampleSizeofCellularHandoffProbeSystemforFreewayTrafficSpeedEstimation.pdf
Basedoncellularhandoffprobetechnology,thispaperconductsastatisticalanalysistofindoutcharacteristicsofsamplesforfreewaytrafficstateestimation.DataarecollectedfromasegmentofmajorfreewaycorridorinJiangsu,China.First,measurementsfromcellularhandoffprobesystemandmicrowavesensorswhichareregardedasthe"groundtruth"aretransformedtouniformspace-meanspeeds.Second,temporalandspatialcharacteristicsaresummarizedanditindicatedthatsamplesintegratedby15minutescouldproducebettertemporalandspatialcoveragecomparatively.Thencorrelationanalysisbetweensamplesizeandrelativeerrorisfollowingup.Apparently,largesamplesizecouldachievestableandhighsystemaccuracy.Finally,threevariablesincludinglengthofhandofflink,trafficvolume,trafficspeed,whichmighthaveaninfluenceonsamplesizeareevaluated.Generally,shorterhandofflink,hightrafficvolumeandfree-flowtrafficspeedarehelpfultoproducemoresamples.
作者：HeShang-lu ChengYang ZhongGang ZhangJian RanBin
作者单位：JiangsuKeyLaboratoryofUrbanITS,SoutheastUniversity,NanjingJiangsu210096,China;JiangsuProvinceCollaborativeInnovationCenterofModemUrbanTrafficTechnologies,SoutheastUniversity,NanjingJiangsu210096,China;ResearchCenterforInternetofMobility,SoutheastUniversity,NanjingJiangsu210096,China;CollaborativeInnovationCenterforTechnologyandApplicationofInternetofThings,SchoolofTransportation,SoutheastUniversity,NanjingJiangsu210096,ChinaDepartmentofCivil&EnvironmentalEngineering,UniversityofWisconsin-Madison,MadisonWisconsin53706,USA
母体文献：2015年南京第十四届亚太智能交通论坛论文集
会议名称：2015年南京第十四届亚太智能交通论坛
会议时间：2015年4月27日
会议地点：南京
主办单位：交通运输部
语种：chi
分类号：
关键词：ITS cellularhandoffprobesystem samplesize integrationtimeinterval handofflinklength relativeerror
在线出版日期：2019年1月18日
基金项目：
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