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摘要随着现代技术的发展，汽车逐渐成为人们生活中不可缺少的一部分。与此同时，庞大数量的汽车也造成了越来越多的道路拥挤和交通事故。因此，能够检测出车辆距离和速度等信息的车检器便由此产生。33730
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车检器的实现方式有超声波、红外线、激光和微波等，其中微波具有长距离探测能力、精确目标识别能力、强抗干扰能力等优点，故车检器常使用微波技术来实现。
本文针对线性调频连续波体制下的微波车检器展开工作。线性调频连续波雷达具有一系列的优点，比如体积小、发射峰值功率低、无距离盲区、大时宽带宽积、高的距离分辨率、抗干扰能力强、能够全天候工作等，故将其应用于微波车检器中。
本文首先介绍了调频连续波雷达的分类和发展情况，接着介绍了线性调频连续波雷达的系统框图，并且以三角波调频连续波雷达为例介绍了线性调频连续波雷达的测距和测速原理，然后简单介绍了线性调频连续波雷达的FIR滤波、MTI、MTD的过程。硬件调试采用了TMS320F28335的DSP芯片和XDS100V2的仿真器，通过软件CCS和硬件的连接，完成了上述算法在硬件上的测试。
关键词：车检器 线性调频连续波雷达 三角波调频 硬件调试
毕业论文设计说明书外文摘要
Title Study of signal processing algorithm in microwave array radar vehicle detector
Abstract
With the development of modern technology,vehicles are becoming an essential part of people’s life.At the same time,the huge number of vehicles cause more and more traffic jam and traffic accidents.The vehicle detectors that can detect the range and velocity of the vehicles come to birth for the reason above.
There are some methods used in the vehicle detector,such as ultrasonic wave,
infrared ray,laser and microwave.Microwave technology has long detecting capability,precise target identification capability and strong anti-interference capability.So vehicle detector usually functions in a microwave
way.
This article uses liner frequency modulation continuous wave radar to carry out
the work.Liner frequency modulation continuous wave radar has some advantages,such as small size,low peak value of transmit power,no blind area in range,large time-bandwidth product,high range solution,strong anti-interference capability and the capability that can work all the day.So it is used in microwave vehicle detector.
This thesis introduces the classification and development of FMCW radar and the system chart of the LFMCW radar.Then it takes the frequency modulation continuous wave radar with triangle wave as an example to introduce the principle of range and velocity detection. Next it introduces simply the process of FIR filter ,MTI and MTD in LFMCW radar.As for hardware debugging,the DSP chip TMS320F28335 and the simulation device XDS100V2 are used.By combining the software CCS and hardware,the test about the algorithm above on the hardware is implemented finally.
Keywords: vehicle detector linear frequency modulation continuous wave radar frequency modulation with triangle wave hardware debug
目 录
1 绪论2