MATLAB及其在数字信号处理中的应用 毕业设计.doc

MATLAB及其在数字信号处理中的应用 摘 要 在科学技术迅速发展的今天，几乎所有的工程技术领域中存在数字信号，对这些信号进行有效处理，以获取我们需要的信息，正有力地推动数字信号处理学科的发展。 MATLAB语言由于其语法的简洁性、代码接近自然数学描述方式以及具有丰富的专业函数库等诸多优点，吸引了众多科学研究工作者，越来越成为科学研究、数值计算、建模仿真以及学术交流的事实标准。 随着MATLAB/SIMULINK通信、信号处理专业函数库和专业工具箱的成熟，它们在通信理论研究、算法设计、系统设计、建模仿真和性能分析验证等方面的应用也更加广泛。MATLAB软件集数值分析、信号处图形显示于一体，且界面友好、具有强大的专业函数库和工具箱，在数字信号处理的科学研究中越来越重要的计算和仿真验证工具。 关键词：MATLAB 数字信号处理 应用 abstract With the rapid development of science and technology , almost all engineering technology have relationship with digital signal today. We should to handle these signal effectively , in order to get the information we need. And in this way the development of digital signal processing discipline is strongly promoted. Because of its succinct grammar and the code gets close to nature and mathematics description way with abundant professional function library, and many other advantages, MATLAB language has became a tool of scientific research that be used more and more widely. It attracted numerous scientific researchers and became the criterion of truth of numerical calculations, modeling simulation and academic exchange. With the mature of communication and signal processing professional function library and professional toolbox , the application of MATLAB/SIMULINK also more extensive in communication theory research, algorithm design, system design, modeling simulation validation and performance analysis. MATLAB software set numerical analysis, signal place graphic display at an organic whole, and friendly interface. Because of its strong professional function library and toolbox, it plays a more and more important role in digital signal processing of scientific research especially the calculation and simulation validation tool. Keywords: MATLAB , digital signal processing , applications 目 录 摘 要 1 abstract 2 1 MATLAB简介 3 1.1 MATLAB的主要组成部分 4 1.2 MATLAB开发环境 5 2 MATLAB在数字信号处理中的应用 5 2.1 基本信号的表示及可视化 5 2.2 MATLAB在采样与波形发生的应用 7 2.3 MATLAB在数字滤波器中的应用 8 参考文献 13 1 MATLAB简介 MATLAB是功能强大的科学及计算软件，它不