一种基于LQI的道路车辆定位方法实现  

A Method of Vehicle Positioning on Specific Road Based on LQI

作　　者：徐国艳[1] 孙劭轩[1] 王江锋[1] 高峰[1] 易飞[1] 

机构地区：[1]北京航空航天大学交通科学与工程学院,北京100191

出　　处：《公路交通科技》2010年第4期122-127,共6页Journal of Highway and Transportation Research and Development

基　　金：教育部高等学校博士点基金项目(新教师)(20070006011)

摘　　要：设计了一种基于无线网络的,用于特定路段的车辆定位系统。对常用的无线网络节点定位的方式进行了对比分析,结合车用无线定位的特点,选择了基于LQI信号的无线定位方式。在定位算法的设计中,改进了三边测量法,给出了一种基于正方形形心的定位算法。设计了合理的定位模型标定方法,对所设计的定位模型进行了标定。从定位误差的角度对标定的定位模型进行了试验分析。试验结果表明,论文给出的基于LQI的无线网络节点定位方法达到了预期的定位要求。A vehicle positioning system on specific road based on wireless network was designed.The common wireless network node positioning methods were analyzed comparatively.The LQI-based wireless location method was selected according to the characteristic of vehicle wireless positioning.In the designing of location algorithm,the three-border measurement was improved,and a location algorithm based on the centroid of square was given.A reasonable location model calibration method was designed and the designed model was calibrated.The location model calibration experimental results are analyzed from the perspective of error.Experimental result shows that the vehicle wireless network node positioning method based on LQI meets the expected requirement.

关 键 词：交通工程 车辆定位 LQI 定位方法 定位试验 

分 类 号：U491[交通运输工程—交通运输规划与管理]