菜单
　　
    摘要随着社会经济的快速发展，汽车越来越普及，已经成为了我们日常生活中一个必不可少的交通工具，但是伴随而来的是频繁发生的交通事故。汽车防撞雷达系统对于提高交通安全、减少事故损失将起到重要作用,其研发具有极大的现实意义和广阔的前景。从上世纪优尔十年代开始，国外就开始了汽车防撞雷达的研究，前视汽车雷达、自主智能巡航控制等技术得到了快速发展。而我国对汽车防撞雷达的研究起步较晚。目前，国内在汽车防撞方面只局限于倒车雷达的研制和生产，至于前视汽车雷达，虽然目前有不少的汽车厂商和科研院所都做了一些跟踪与探索，但没有实现产业化，国内市场尚未启动。23427
    本文围绕调频连续波雷达进行了系统仿真。论文首先总结了国内外汽车防撞雷达研发现状，然后介绍了调频连续波雷达的测距测速原理，并对调频连续波信号进行数学分析，最后通过使用ADS软件进行了调频连续波雷达简化建模，分别得到三角波、正弦波、锯齿波三种不同调制波形下的仿真结果。
    关键词      调频连续波雷达    系统建模   汽车防撞雷达  测距测速
    毕业设计说明书（毕业论文）外文摘要
    Title   System Simulation of Frequency Modulated Continuous Wave Radar          
    Abstract
    Along with the development of economy, the automobile has become an indispensable means of transportation of our daily life, which is followed with frequent occurrence of traffic accidents. The research on automobile anti-collision radar system has great practical values and extensive future prospects as it plays an important role in promoting traffic safety and cutting down the cost of accidental loss. Since 1960s，the research on automobile anti-collision radar system has been initiated abroad. Some technologies such as forward-viewing radar and autonomous intelligent cruising management，have been maturing speedily. However, the study of automobile anti-collision radar system in our country was comparatively late.Now, in the anti-collision field, domestic research is limited in the study of backwards radar. As to forward-viewing radar, although there are tracking and exploring activities made by not a few automobile companies and research institutes, it is not industrialized yet, which keeps domestic market unsealed.
       This paper focuses on continuous wave radar and makes a systematic simulation. Firstly, it summarizes the current situation of the research on automobile anti-collision radar. And then it introduces the principles of FMCW radar measuring distance and speed. Finally, the ADS software is applied to simplify the modeling process of FMCW. Under three distinct modulation waveforms, the simulation consequences emerge separately as triangle, sine and serrate waves.
    Keywords   Frequency Modulated Continuous Wave  Anti-collision  Radar
    目录
    1  绪论    5
    1．1  课题背景及意义    5
    1．2  国内外研究现状    5
    1．3  本文主要工作    6
    2  调频连续波雷达    7
    2．1  调频连续波雷达测距原理    7
    2．2  调频连续波信号分析[8]    8
    2.3 雷达方程简介    13
    3  三角波调制调频连续波雷达    16
    3．1  三角波调制调频连续波雷达测距原理    16
    3．2  调频连续波雷达测速原理    18
    3．3  FMCW雷达系统设计    18
    3．3  三角波调制调频连续波雷达测距ADS仿真    19
    3．3 .1采用方案一    20
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