基于无线定位技术的交通信息获取方法研究  

A Method of Traffic Information Collection Based on Wireless Location Technology

作　　者：胡坚明[1] 宋靖雁[1] 李伟[1] 

机构地区：[1]清华大学自动化系系统工程研究所,北京100084

出　　处：《公路交通科技》2007年第10期113-117,122,共6页Journal of Highway and Transportation Research and Development

基　　金：国家重点基础研究发展计划资助项目(973计划)(2006CB705506);国家高技术研究发展计划资助项目(863计划)(2007AA11Z222);国家自然科学基金资助项目(60374059)

摘　　要：基于无线定位技术的交通信息获取方法是一种应用前景良好的交通信息获取方法。在考虑该方法所涉及各方面问题的基础上,给出了一种适合我国混合交通状况的应用无线定位技术获取交通信息的方法。首先阐述了应用无线定位技术获取交通信息的工作原理及系统框架,进而通过实测获取处于通话状态的移动台在越区切换过程中的切换点数据,并分析切换点的分布特征。在该特征的基础上,应用PARAMICS软件构建仿真环境,设计仿真方案,进行仿真试验,以评价该方法的有效性和实用性。仿真试验的结果表明,基于无线定位技术的交通信息获取方法能够获取相当精度的交通信息。Traffic information collection based on wireless location technology is a promising method of traffic information collection. With analyzing the related problems, a new traffic information collection method based on wireless location technology is put forward to face the mixed traffic condition of Chinese large cities. After illustrating the fundamentals of the method and the system architecture, the handoff point information of the mobile stations is obtained by actual experiments.Then, the distribution characteristics of the handoff points is analysed.Furthermore, in order to evaluate the effectiveness and applicability of the method, PARAMICS, a kind of microscopic simulation software, is introduced to establish a simulation environment, based on which the simulation experiments are car- ried out. The simulation results show that the proposed traffic information method based on wireless location technology can obtain relatively precise traffic information.

关 键 词：智能运输系统 交通信息获取 无线定位技术 移动检测技术 

分 类 号：U491[交通运输工程—交通运输规划与管理]