基于MATLAB实现“信号与系统”课程可视化建模及仿真.doc

毕业设计 目录 毕业论文 摘要 PAGE II PAGE 1 摘 要 “信号与系统”是电子信息、通信工程、光电工程、计算机工程、自动控制、电子科学、生物电子工程、电力控制等弱电类专业或跨弱电类专业的一门重要的技术基础课。它为实际应用的信号与系统提供了数学分析与设计的理论基础，为连续信号的抽样，离散信号与离散系统提供了数字分析与设计的理论基础，因而成为许多课程的理论课基础。 “信号与系统”主要研究确定信号的特性、线性非时变系统的性质、信号通过线性系统的响应，以及由此引出的信号与线性系统理论中重要的基本概念和基本分析方法。本文对某些典型信号,如连续时间信号、离散时间信号，以及对基本理论进行深入讨论，运用MATLAB对信号及原理进行仿真。 论文主要由三部分构成。 第一部分、信号的表示和可视化。 第二部分、连续系统的时域、频域、S域分析、连续信号的采样和重构等内容的介绍及仿真。 第三部分、用MATLAB创建各章节的图形界面。 关键词 信号与系统，傅里叶级数，傅里叶变换，采样定理，MATLAB仿真 毕业论文 Abstract Abstract Signals and Systems is an important basic technology coursr of Electronic Information, Communication Engineering, Opto-electronic Engineering, Computer Engineering, Automatic Control, E-science, Bo-electrical Engineering, Electrical Control and so on. It provides the theoretical math analysis and design basis to practical signal and system of the mathematics of the theoretical basis of sampling for the continuous signal, also to discrete signals and discrete-time systems. So it has become the basic of courses. ?? Signals and Systems studies mainly about identifing the main characteristics of the signal, non-linear nature of time-varying systems, the signal through the linear system response, and the signal leads to linear system theory and the basic concept of an important and fundamental analysis. In this thesis, I study some of typical signals, such as continuous-time signal, discrete-time signal, then do an in-depth discussion of basic theory, and use MATLAB to emulate the signals and the principle of signal simulation.  In this thesis, there are three parts. The first part, the expression and visualization of signal; the second part, time domain, frequency domain, S domain analysis of continuous system, presentation and simulation of sampling and reconstruction in continuous signals; the third part, using MATLAB