基于MATLAB的连续时间信号的时域频域分析（论文）.doc

 摘 要 随着信息技术的不断发展和信息技术应用领域的不断扩展，信号与系统课程已经从电子信息工程类专业的专业基础课程扩展成电子信息、自动控制、电子技术、电气工程、计算机技术、生物医学工程等众多电类专业的专业基础课程。 该课程涉及了信号与系统的概念、信号分析、连续时间系统和离散时间系统的时域和频域分析、系统的状态变量描述、傅里叶变换、拉普拉斯变换、z变换等等。 由于信号与系统课程理论性较强，不易于理解，对所产生的结果又多以数学表达式给出，通过MATLAB软件编程实现信号的时域频域分析，将数学公式可视化，使课程内容更加易懂易学。MATLAB凭借其数值计算与图形可视化功能的完美结合，以及开放的设计理念，在信号的分析与处理上具有重要的作用和意义。 本文  Abstract With the continuous development of information technology and the continuous expansion of information technology applications, The curse Signal and System has been expanded from the electronic information engineering specialty in basic courses to electronic information, automatic control, electronics, electrical engineering, computer technology, biomedical electrical engineering and many other specialty professional foundation courses. The course covers the concept of signal and system, signal analysis, continuous time and discrete time system in time domain and frequency domain analysis, the systems state variable description, Fourier transform, Laplace transform, z transform and so on. The theory of Signal and System course is not easy to understand and the result of the addition is often expressed by mathematical. The time domain frequency domain analysis and the visualization of mathematical formulas can be achieved by MATLAB software programming. And the MATLAB software can make the curriculum content more accessible to learn. MATLAB has an important role and significance in signal analysis and processing with its numerical and graphical visualization of the perfect combination, and the open design concept, This paper describes the MATLAB in the electronic information engineering application, MATLAB language use; and sub-chapters on Signals and Systems course related to the common continuous-time signal and time domain frequency domain analysis, and describes how to use MATLAB software development, these functions, and then curves generated by modifying the parameters, and then analyzes various types of signal parameters on the