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.
出处
《公路交通科技》
CAS
CSCD
北大核心
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)
关键词
交通工程
车辆定位
LQI
定位方法
定位试验
traffic engineering
vehicle positioning
LQI
location method
location experiment
