文档介绍：第 39 卷第 4 期电子科技大学学报
2010年7月 Journal of University of Electronic Science and Technology of China Jul. 2010
基于线性正则变换的时频信号分离方法
向强1,2,秦开宇1,张传武2
(1. 电子科技大学自动化工程学院成都 610054; 2. 西南民族大学电信学院成都 610041)

【摘要】时频信号分析是当今信号处理领域研究的一个热点问题,各种时频分布函数得到了广泛的研究和应用。线性正
则变换是一种重要的时频分析工具。文中研究了线性正则变换与传统时频分布函数的关系;并基于这些关系,提出了一种新
的时频信号分离方法,能够把在时频面上互不重叠、但在时域和频域均存在较强耦合的多分量合成信号有效地分离。仿真实
例表明了该方法的正确性和实用性。
关键词带通滤波器; 傅里叶变换; 线性正则变换; 信号分离; 时频分析
中图分类号文献标识码 A doi:.1001-

Novel Method for Time-Frequency Signal Separation
Based on the Linear Canonical Transform

XIANG Qiang1,2, QIN Kai-yu1, and ZHANG Chuan-wu2
(1. School of Automation Engineering, University of Electronic Science and Technology of China Chengdu 610054;
2. College of Electrical & Information, Southwest University for Nationalities Chengdu 610041)

Abstract Time-frequency signal analysis is a hot research topic in signal processing domain at present. A
number of time-frequency distributions have been developed and used to analyze time-frequency signal. The linear
canonical transform with multi-parameter is a powerful time-frequency analysis tool. It is the generalization of the
Fourier transform and the fractional Fourier transform. In this paper, the relations between the linear canonical
transform and time-frequency distributions are obtained. Based