“随机信号线性变换后的概率分布”教学探索  

Teaching Exploration on the Probability Distribution of Random Signal after Linear Transformation

作　　者：江莉[1] 周军妮[1] 卫铭斐[1] Jiang Li;Zhou Junni;Wei Mingfei(School of Information and Control Engineering,Xi＇an University of Architecture and Technology,Shaanxi Xi＇an 710055)

机构地区：[1]西安建筑科技大学信息与控制工程学院,陕西省西安市710055

出　　处：《电子技术（上海）》2018年第8期13-16,共4页Electronic Technology

基　　金：陕西省教育厅专项科研计划项目(16JK1429)

摘　　要：文章针对"随机信号经过线性变换后的概率分布"内容相对抽象,学生不易理解,课堂教学容易与工程实践脱离等问题,首先从高斯信号的有趣现象引入讨论课题。然后对该理论进行简单分析,重点通过基于Matlab的交互式实验验证线性变换后的随机信号的概率分布的特点。最后以信号检测系统为例,说明该方法在实际工程中的应用。本文理论与实验相结合,提高学生的学习兴趣,便于学生理解并掌握。The teaching content of the probability distribution of random signal after linear transformation is hard to be understood for students, and classroom teaching is easy to deviate from engineering practice. First, the interesting Gaussian phenomenon was introduced, then the theory was simple analysis. The probability distribution characteristics of the random signal after linear transformation are verified by the interactive experiment based on matlab. Finally, the signal detection system was used to illustrate the application of the theory in practical engineering, it is helpful for students to raise learning interest and study effectively than before.

关 键 词：随机信号分析 线性系统 高斯分布 概率分布 信号检测 教学探索 

分 类 号：TN911.6-4[电子电信—通信与信息系统]