摘要随着科技的不断进步，居民汽车拥有量日益增加，这导致了频繁发生的道路交通事 故，交通伤害致死人数逐年增加。汽车防撞雷达作为新兴的电子产品，会受到越来越多 司机的关注。

本论文主要针对 24GHz 调频连续波（FMCW）雷达信号处理模块展开设计，从研究背 景及现状、测量原理、硬件及软件设计等方面进行了深入研究。主要研究对象信号处理 模块分成中频信号处理模块和基带信号处理模块两个部分。通过对系统性能的分析，为 中频信号处理电路选择合适的电路参数，解决了三角波调制信号的干扰问题。基带信号 处理模块包含了 ADC、DSP、FPGA 和显示等模块，完成了对中频信号的处理分析，从而提 取出目标的有用信息。总的来说，最终实现了汽车防撞雷达信号处理模块的硬件电路以 及配套软件的设计。79036

论文最后进行了外场实验，将测量结果和 MATLAB 软件的仿真结果进行了比较，然后 分析了测量误差的产生原因，为今后该系统的总体设计铺平道路。

毕业论文关键字 汽车防撞雷达 FMCW DSP FPGA

Title Design of signal processing module for automotive collision avoidance radar

Abstract The traffic accidents and the corresponding death toll have been increased drastically with the increase of Chinese technology and the total amount of the civil Automobile。Automotive collision avoidance radar, as a novel type of electronic products, has aroused the concerns of the accumulating number of people’s attention。

In this paper ,the major study area is 24GHz frequency modulated continuous wave (FMCW) radar signal processing module,which consists of the research background and current situation, measurement principle, hardware and software design, and so on。The signal processing module can be pided into two main parts of the intermediate frequency signal processing module and the base band signal processing module。After the analysis of the system performance, it is suitable for the intermediate frequency signal processing circuit to select the appropriate circuit parameters, and solve the problem of the interference of the triangular wave modulation signal。The base band signal processing module is consisted of ADC, DSP, FPGA and display module, which completes the processing analysis of the intermediate frequency signal, and extracts the useful information of the target。In general, the hardware circuit board and the software design of the automobile collision avoidance radar signal processing board are realized。

Finally, the field experiment was conducted to compare the simulation results with the MATLAB software, and then analyze the reason of the measurement error, paving the way for the overall design of the system in the future。

Keywords automotive collision avoidance radar FMCW DSP FPGA

目 次

1 引言·-7-

1。1 研究背景··-7-

1。2 毫米波防撞雷达研究现状··-8-

1。3 防撞雷达的技术比较··-9-

1。4 本文主要工作·-11-

2 FMCW微波防撞雷达工作原理及参数设计··-13-

2。1