卫星定位收费系统车载收费地图定义和地图匹配方法  

Definition of Map on OBU and Map-matching Algorithm for GPS-based ETC System

作　　者：王东柱[1] 朱书善[1] 刘楠[1] 

机构地区：[1]交通部公路科学研究院国家智能交通系统工程技术研究中心,北京100088

出　　处：《公路交通科技》2011年第11期115-120,151,共7页Journal of Highway and Transportation Research and Development

基　　金：国家"十一五"科技支撑计划项目(2006BAG01A04)

摘　　要：根据我国现有封闭式收费高速公路的特点,定义了一种新的由收费关键点和关键路段组成,满足卫星收费系统路段识别需求的车载电子地图。基于收费地图定义,提出了一种新的路段识别匹配方法。在路段识别匹配过程中,采用随车速动态调节搜索匹配范围的方法。地图路段匹配方法将路段识别变成关键点识别,根据计费标示值和路段属性识别判断道路出入口和经过路段,结合路段邻接关系避免相邻其他车道点对路段识别的干扰。文中最后对本方法在卫星收费试验系统中的应用进行了简要描述,并对提高路段识别的措施进行了讨论。This article described a new definition of map on OBU for GPS-based ETC system.Key points and key links were defined on the new map according to the character of enclosed toll expressway in China to meet the link identification needs of GPS-based ETC system.A new map-matching algorithm was proposed based on this map definition.The GPS search area changed with the vehicle running speed during the map-matching process.The map-matching algorithm first matched GPS data to the key nodes on map instead of links,then matched the passing links,entry and exit links according to the charging status and link property,and identified the links by adjacency relation to avoid the interference from the vehicles on the links nearby.At last,the applications of the presented method in GPS-based ETC experiment system were described and the measures for improving the accuracy of map-matching were discussed.

关 键 词：交通工程 卫星收费 关键点 关键路段 入口 出口 地图匹配 

分 类 号：U491[交通运输工程—交通运输规划与管理]