连续时间信号频谱图形的Matlab实现方法  

The Method of Realizing Spectrum Graph of Continuous-time Signal with Matlab

作　　者：王波[1] WANG Bo(School of Smart Education,Jiangsu Normal University,Xuzhou,China,221116)

机构地区：[1]江苏师范大学智慧教育学院,江苏徐州221116

出　　处：《福建电脑》2023年第2期86-89,共4页Journal of Fujian Computer

摘　　要：信号与系统课程中傅里叶变换及频谱分析理论具有抽象复杂的特点,使得传统课堂模式下的教学过程难以顺畅进行。因此,探索一个借助于Matlab的绘图功能,使相关理论的教与学过程简单化,进而提高课堂教学质量的有效方法是必要的。本文依托于一个选定的操作样例信号的相关程序设计过程,探讨利用Matlab软件实现非周期连续时间信号频谱图形的多种方法,详细描述了其中的离散数值计算方法的理论及具体应用步骤。程序运行给出的频谱图形,证明了离散数值计算方法的正确性,说明了利用直观的Matlab图形作为辅助工具来改进理论教学过程的方法是可行的。The abstract and complex characteristics of Fourier transform and spectrum analysis theory in the signal and system course will make the teaching process under the traditional classroom mode difficult to carry out smoothly.Therefore,it is necessary to explore an effective method to simplify the teaching and learning process of relevant theories and improve the quality of classroom teaching with the help of the drawing function of Matlab.Relying on the relevant programming process of a selected operation sample signal,this paper discusses several methods of realizing the spectrum graph of nonperiodic continuous-time signal by using Matlab software,and describes in detail the theory and specific application steps on discrete numerical calculation method.The spectrum graph given by the program running proves the correctness of the discrete numerical calculation method,and shows that it is feasible to use the intuitive Matlab graph as an auxiliary tool to improve the theoretical teaching process.

关 键 词：傅里叶变换 MATLAB 频谱图形 离散数值计算方法 样例信号 

分 类 号：G642[文化科学—高等教育学] TP311.1[文化科学—教育学]