信号分析教材中相频谱内容的改进建议  

Improvement Proposals of Phase Spectrum Content in Signal Analysis Textbook

作　　者：王林平[1] 刘巍[2] 刘桂涛[1] 

机构地区：[1]烟台大学机电汽车工程学院,山东烟台264005 [2]大连理工大学机械工程学院,辽宁大连116024

出　　处：《电气电子教学学报》2011年第4期118-120,共3页Journal of Electrical and Electronic Education

摘　　要：相频谱在频谱分析中占有重要地位,它包含了信号的大量信息。相频谱计算是"测试技术"课程教学中的难点,但教科书中对相频谱重视不够,这给教学造成了较大困难。本文在介绍初相位概念的基础上,系统总结了周期信号相频谱求解中的主要问题,并提出了一些建议,以弥补现有教材中这部分内容的不足。Phase spectrum plays an important role in spectrum analysis and it embodies much information of the original signals.Phase spectrum calculation is one of the main teaching difficulties in the course of Measurement and Test Technology.Moreover,textbooks usually make light of it,as thus baffle the teaching still more.Based on the initial phase concept,this paper summarizes problems occurred in calculating phase spectrums of periodic signals and advances some suggestions to tackle these problems,so as to complement the relevant contents of current textbooks.

关 键 词：傅立叶级数 相频谱 初相位 主值相位 

分 类 号：TN911.7[电子电信—通信与信息系统]