一种面向安全辅助预警的车辆相对位置判定方法  

A Determination Method of Vehicle Relative Position for Auxiliary Safety Pre-alerting

作　　者：宋向辉[1] 李亚檬[1] 赵佳海[1] 王新科[1] 

机构地区：[1]交通运输部公路科学研究院,北京100088

出　　处：《公路交通科技》2013年第10期117-121,共5页Journal of Highway and Transportation Research and Development

基　　金：国家高技术研究发展计划(八六三计划)项目(2011AA110404-5)

摘　　要：针对基于位置的车辆安全预警服务对车辆位置的判定精度要求较高,以及目前卫星定位精度在成本约束条件下通常存在较大定位误差的问题,研究实现了一种用于车辆安全预警的基于条件极值和车辆历史相对位置前溯法的路上车辆相对位置判定方法,在提高运算效率的同时保证了车辆与车辆或车辆与基准参照物间相对位置的判定精度。试验研究及试验数据分析表明,该方法可提高车辆相对位置判定精度。通过应用系统测试,验证了该方法适于行车安全预警应用。Aiming at the problems that the high accuracy of vehicle relative position determination requirement of vehicle safety-alerting service based on location information and the existence of large errors of general satellite positioning due to the cost constraint, a vehicle relative position determination method for vehicle safety pre-alerting based on conditional extreme and vehicle history relative position prospective method is researched. This method can improve the efficiency of computation and ensure the relative position determination accuracy between vehicle to vehicle, vehicle to reference frame at the same time. The experimental research and data analysis show that this method can improve the determination accuracy of vehicle relative position. It is proved by systematic test that this method is feasible to the safety pre- alerting.

关 键 词：智能交通系统 安全预警 条件极值 定位精度 辅助驾驶 

分 类 号：U491.2[交通运输工程—交通运输规划与管理]