随机信号通过线性系统的教学研讨

Teaching Seminar of Random Signal by Linear System

摘要: 随机信号通过线性系统是随机信号分析教学中的重要内容。由于随机信号通过线性系统涉及到线性系统理论以及信号的时频域分析理论，从而导致学生对该部分内容较难以理解和掌握。本文首先介绍线性时不变系统和窄带系统，然后分别从时域和频域对经过线性系统的信号进行分析，并分析了白噪声经过线性系统，最后通过设计实例和实验让学生们对该部分的内容加以应用。文章对于随机信号通过线性系统的教学有一定的指导作用，并且有助于学生更好地理解和工程应用。

Abstract: Random signal by the linear system is an important content in the teaching of random signal analysis. Random signal by the linear system involves linear system theory and time frequency domain analysis theory of signal, which lead students to understand and grasp the contents of this part uneasily. In this paper, the linear time invariant system and the narrow band system are introduced firstly, and then the signal of the linear system is analyzed respectively from the time domain and the frequency domain. The white noise is also analyzed by linear system. Finally, designing examples and experiments make students know how to use the content of this part. This article has some guidance to the teaching of random signal by the linear system and can help students to better understand and apply.