基于MATLAB的数字滤波器设计及其在雷达中的应用(matlab程序)(课题申报表,任务书,开题报告,中期检查表,外文翻译,论文15500字,程序,答辩PPT)
摘要:本文以数字滤波器的设计与应用为背景,研究了基于MATLAB的IIR滤波器和FIR滤波器的设计,提出了基于滤波器的OFDM雷达回波信号解调方法,并分析了方法的性能。
第一章绪论阐述了研究的背景及意义,介绍了MATLAB编程工具及数字滤波器的基本知识,分析了利用MATLAB设计滤波器的优势,并介绍了论文的主要工作与结构安排。
第二章分别研究了基于MATLAB的IIR滤波器与FIR滤波器的设计与实现,阐述了设计原理与步骤,并用实例进行详细说明。最后比较了两种滤波器的优缺点,指出了它们适合的应用领域。
第三章首先介绍了OFDM雷达这种新体制雷达,建立了OFDM雷达回波模型。提出了基于带通滤波器能实现OFDM雷达信号解调的方法,仿真实验证明了方法的有效性。针对OFDM雷达信号的特点提出了正交解调方法,并分析了其性能。
第四章对全文进行了总结。
关键词:MATLAB;IIR滤波器;FIR滤波器;OFDM雷达;解调
Digital Filter and its Design for OFDM Radar Application
Based on Matlab
ABSTRACT:Based on the design and application of the digital filters as the research background, this dissertation addresses the design of IIR filter and FIR filter using MATLAB. Methods for demodulation of OFDM radar echoes based on filters are proposed. The performances of the methods are analyzed.
In chapter 1, the background and the significance of the dissertation is presented. It introduces basic information of MATLAB and digital filter, and analyzes the advantages of design filter based on MATLAB. The main content of this dissertation is also presented.
In chapter 2, the design and realization for IIR and FIR filters based on MATLAB are researched. The design principle and steps are introduced, and several examples are taken to illuminate them. At last, the advantages and disadvantages of IIR and FIR filters are compared. The applications for them are pointed out.
In chapter 3, the new OFDM radar is introduced and the echo model of OFDM radar is established. A method for demodulation of OFDM radar signals based on band pass filter is proposed, and the simulations are carried out to prove the validity of the method. Aiming at the characteristic of OFDM radar signals, a method based on orthogonal demodulation is proposed, and its performance is analyzed.
Chapter 4 summarizes the dissertation.
KEY WORDS: MATLAB, IIR filter, FIR filter, OFDM radar, demodulation
目 录
摘 要 1
关键词 1
1 前言 3
1.1 研究背景及意义 3
1.2 研究现状 3
1.2.1 MATLAB简介 3
1.2.2 数字滤波器 4
1.2.3 基于MATLAB的数字滤波器设计与实现 6
1.2.4 OFDM雷达简介 7
1.3 论文的主要工作与结构安排 9
2 基于MATLAB的数字滤波器的设计与实现 11
2.1 引言 11
2.2 基于MATLAB的IIR滤波器的设计与实现 11
2.2.1 设计原理与步骤 11
2.2.2 设计实例 13
2.3 基于MATLAB的FIR滤波器的设计与实现 18
2.3.1 设计原理与步骤 18
2.3.2 设计实例 20
2.4 两种滤波器的比较 31
2.5 本章小结 32
3 数字滤波器在OFDM雷达中的应用 33
3.1 引言 33
3.2 OFDM雷达回波模型 33
3.3 基于数字滤波器的OFDM雷达信号解调 35
3.3.1 基于带通滤波器的OFDM雷达信号解调 35
3.3.2 仿真实验 35
3.4 OFDM雷达信号的正交解调 39
3.4.1 正交解调方法 39
3.4.2 性能分析 40
3.5 本章小结 43
4 结束语 43
4.1 本文的主要工作 43
4.2 下一步研究工作 44
参考文献 45
致 谢 47
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