毕业设计（论文）基于MATLAB的经典数字滤波器的仿真与设计.doc

目 录 摘要: I Abstract: II 第一章 绪论 1 1.1 滤波器原理 1 1.2 数字滤波器设计方法概述 1 1.3 MATLAB软件简介 2 第二章 IIR滤波器设计及其MATLAB实现 3 2.1 巴特沃斯低通滤波器设计 3 2.2 切比雪夫低通滤波器设计 5 2.3 椭圆低通滤波器设计 9 2.4 脉冲响应不变法 10 2.5 双线性Z变换法 13 第三章 FIR滤波器设计及其MATLAB实现 15 3.1 线性相位FIR数字滤波器的条件和特点 15 3.2 常用窗函数及MATLAB实现 15 3.3 各种窗函数的实现与比较 15 3.4 用窗函数设计FIR数字滤波器以及MATLAB实现 15 结 论 15 参考文献（References） 15 致谢 15 基于MATLAB的经典数字滤波器的仿真与设计 摘要:数字滤波器是。：一是经典滤波器，特点是通过一个合适的选频滤波器，输入信号中的某些有，另外那些成分[1]。这种滤波器无限冲激响应有限冲激响应滤波器另外一滤波器是现代滤波器，当信号和干扰的频带，经典滤波器对干扰的有效除，可以采用现代滤波器，从干扰中最佳的提取信号。这种滤波器主要有维纳滤波器、卡尔曼滤波器、自适应滤波器等[]。 本文分别介绍巴特沃斯低通滤波器、切比雪夫低通滤波器，椭圆低通滤波其中，矩形窗汉宁窗布拉克曼切比雪夫 关键词：MATLAB，IIR数字滤波器，FIR数字滤波器 Simulation and Design of Classical Digital Filter Based on MATLAB Abstract: The digital filter is a discrete signal processing, to retain the useful signal and filter out interference signal discrete system. The digital filter can be divided into two categories: One is the classic filter,which can able to achieve some of the valid signal selection, and filtered some useless components that are not by a suitable frequency-selective filters.And Unit impulse response of this filter are infinite impulse response and finite impulse response filter. Another filter is a modern filter. Classic filters can not effectively filter out interfering signals when the frequency band of the useful signal and the interference signal overlap and distort,it can adopt modern filter,which can able to filter、detect、value by the internal statistical properties of random signals,and can most effectively extract useful signals from interference signal. Such filter mainly are Wiener filter, Calman filter, adaptive filter. This article is totally divided into three chapters .Chapter one introduces principle of filter and MATLAB. Chapter two respectively introduces Butterworth filter、Chebyshev filter、Ellipse filter;And design Butterworth digital filter with bilinear transformation and Chebyshev I digtal with filterPulse invariance. Chapter three respectively introduces Rectangul