数字信号仿真验.doc

摘要 本实验以MATLAB7.1为软件平台，通过对数字信号的仿真实验，熟悉MATLAB软件平台、工具箱、高效的数值计算及符号计算功能。熟悉MATLAB软件的信号处理编程方法和结果的可视化，了解数字信号处理的计算机仿真方法，进一步加深对信号与系统的基本原理、方法及应用的理解。MATLAB是科研开发和工程设计的有力工具，可以直观的用数学表达式描述问题，从而避开繁琐的底层编程，并把有限的时间和精力更多的花在要解决的问题上因此可以大大提高工作效率。针对各种硬件目标的开发仿真，MATLAB提供相应的实时目标开发工具。利用MATLAB可以快速完成各类数值计算、符号计算和数据可视化等任务，可以解决有关线性代数。矩阵分析、微积分、微分方程、信号与系统、信号分析与处理、系统控制等领域的问题；实验主要包括以下内容：对连续信号的时域运算与时域变换；阶跃信号拉氏变换曲面图；线性系统的时域分析及Matlab实现拉普拉斯变换零极点分布对曲面图的影响；由拉普拉斯曲面图观察频域与复频域的关系用MATLAB来绘制该信号的傅立叶变换曲线（振幅频谱）。 关键词：MATLAB；信号与系统；开发仿真； Abstract In this study in order to MATLAB7.1 software for the platform of digital signal simulation, MATLAB familiar with the software platform, toolbox and efficient numerical symbols and computing power. MATLAB software are familiar with the programming signal processing methods and results visualization, digital signal processing to understand the methods of computer simulation to further deepen their understanding of the signal system and the basic principles, methods and application of the understanding. MATLAB is the development of scientific research and engineering design a powerful tool, you can use the intuitive mathematical expression to describe the problem in order to avoid the red tape of the underlying programming, and the limited time and energy spent more to resolve the issue so far To improve efficiency. For a variety of hardware development objectives of the simulation, MATLAB Real-time goal to provide the appropriate development tools. MATLAB can be completed quickly using various types of numerical calculation, the symbol of computing and data visualization tasks, and so on, can solve linear algebra. Matrix analysis, calculus, differential equations, and signal systems, signal processing and analysis, system control, and other areas; experiment include the following: a row of time-domain signal of the operation and time-domain transform; step signal Laplace surface Map; linear system of time-domain analysis of the realization of Matlab and Laplace transform zero pol