LFMCW雷达运用于汽车防撞的研究

Research of the LFMCW radar application in automobile anti-collision

随着现代社会汽车数量的日益增多,汽车防撞技术的研究已成为保障人民生命安全和提高运输业的关键。课题旨在研究一种汽车防撞系统,保证在该系统正常运作的情况下既不发生碰撞事故又不降低道路的通行能力。该系统利用LFMCW的线性调频特性及多普勒效应的原理既可测量两车间距又可实现相对运动的判断,结合两者的测量值,实现有效防撞的功能。主要论述了LFMCW雷达运用于汽车防撞系统中的相关参数确定及具体实现方法,原理分析。

With the increasing number of vehicles in modern society,vehicle collision avoidance technology has become the key to protect the safety of the people and improve the transport sector.The purpose of this project is to research an automobile collision avoidance system to ensure the normal operation of the system without reducing the capacity of the road when it can effective anti-collision.This system utilizes the principle of the LFMCW radar＇s the linear FM characteristics and the Doppler effect and can measure the two-vehicle distance while achieving a judgment of relative movement.Then combine the two measured values to achieve an effective anti-collision .This paper describes determination of the specific parameters of LFMCW radar used in automotive collision avoidance system , analysis of principles.