基于MATLAB的信号系统实验平台设计毕业设计（论文）.doc

基于MATLAB的信号系统实验平台设计 摘要MATLAB软件设计实现信号仿真系统的基本原理及功能，以及利用MATLAB软件提供的图形用户界面（Graphical User Interfaces ,GUI）具有人机交互、界面友好MATLAB的图形用户界面设计功能, 开发出了各个实验界面。在该实验软件中, 集成了信号处理中的多个实验, 应用效果良好。本系统是一种演示型软件,用可视化的仿真工具,以图形和动态仿真的方式演示部分基本信号的传输波形和变换，使学习人员直观、感性地了解和掌握信号与系统的基本知识。 关键词MATLAB，图形用户界面，实验软件 The experimental platform design of signal System which bases on Mat Lab Abstract The writer of this article summarizes the Signal Simulation System’s demand, general structure, basic function. In this thesis, the author focuses on using MATLAB software design to come true the basic principles and functions of the signal simulation system and pays attention to making use of Graphical User interface (Graphical User Interfaces, GUI) MATLAB software provides to design human-computer interactive and friendly User interface. Based on the design function of MATLAB Graphical User Interface, many experiment interfaces are developed. During in the experience of this software, some experimentations of the signal processing are integrated and its applicable effect is good. This system is demonstrative software. By the ways of graphics and dynamic simulation, this system uses visual simulation tools to demonstrate the transmission waveform and transformation of some basic signals, making learners intuitively and perceptually understand and grasp the basic knowledge of signal and system. Key words: signal processing, MATLAB, the Graphical User Interface, experimental software 目录 摘 要 3 Abstract 4 1 绪论 5 1.1 易用性 5 1.2平台独立性 5 1.3机制独立的画图 5 1.4 用户图形界面 5 2 GUI简介 8 3系统分析 9 3.1引言 9 3.2需求分析 9 3.3可行性分析 9 3.3.1技术可行性 9 3.3.2操作可行性 10 3.4系统目标 10 3.5系统主要功能 10 4系统软件平台的设计 11 4.1系统整体设计介绍 11 4.2系统设计步骤 11 5系统模块 12 5.1基本信号产生 12 5.1.1正弦信号 12 5.1.2指数信号 12 5.1.3符号函数 13 5.1.4单位冲激系列 14 5.1.5单位阶跃系列 14 5.1.6抽样信号 15 5.1.7矩形脉冲 15 5.1.8三角脉冲 16 5.2离散信号基本运算 16 5.3卷积模块 17 5.4频谱分析模块 18 5.5时不变连续系统的时域和频域分析模块 19 5.6离散时不变系统分析 19 5.7离散系统Z域分析 20 5.7.1离散系统的稳定性； 20 5.7.2离散系统的频率特性（幅频响应和相频响应）。 20 附