摘要： 针对现有高速公路管理系统无法对车辆进行实时管理的现状，提出一种对高速公路上车辆进行实时测速及定位的方法。该方法基于射频识别(RFID)技术，通过分析构建移动车辆的定位模型，利用谱估计方法对其多普勒频移进行测量，并针对模型求解中存在的非线性特性，采用牛顿迭代法计算车辆的实时速度及相对坐标以达到测量车速及确定车辆实时位置的目的。仿真实验结果表明，该方法具有运算量小、精度高、实施简单的特点。

关键词: 射频识别, 多普勒频移, 牛顿迭代方法, 定位

Abstract: Aiming at the state of highway management system in defect of real-time management of vehicles, this paper presents a novel algorithm to measure vehicle speed and location based on Radio Frequency Identification(RFID). By constructing moving vehicle model, spectral estimation is used to measure vehicle Doppler shifter and New-Town iteration method is used to solve the nonlinear characteristic of models in order to obtain the vehicle real-time speed and relative location. Simulation experimental result shows that the method for vehicle speed measurement and location can achieve high precision with little operation and simple maneuverability.

Key words: Radio Frequency Identification(RFID), Doppler shifter, New-Town iteration method, location

中图分类号: 

• TP391