跳频信号的时频分析新方法

doi:10.13190/jbupt.201003.10.032

北京邮电大学学报 ›› 2010, Vol. 33 ›› Issue (3): 10-14.doi: 10.13190/jbupt.201003.10.032

跳频信号的时频分析新方法

冯涛^1，2，袁超伟¹

（1北京邮电大学信息与通信工程学院，北京 100876；
2中国电科集团第54研究所，石家庄 050081）

收稿日期:2009-08-28 修回日期:2009-11-22 出版日期:2010-06-28 发布日期:2010-05-14
通讯作者: 冯涛 E-mail:fengtao54@sina.com
基金资助:
国家自然科学基金项目（60672132，60872149）

A Method of TimeFrequency Analysis for 
FrequencyHopping Signals

FENG Tao^1,2, YUAN Chaowei¹

(1 School of Information and Communication Engineering,  Beijing University of Posts and
Telecommunications,   Beijing 100876,  China;  
254th Research Institute,  Chinese Electrical Technology Corp., Shijiazhuang 050081,  China)

Received:2009-08-28 Revised:2009-11-22 Online:2010-06-28 Published:2010-05-14

摘要/Abstract

摘要：

为了有效分析跳频信号并估计其参数，根据跳频信号的特点，提出一种基于信号分解的时频分析方法. 该方法

先将多分量跳频信号通过带通滤波变成多个单分量信号，再将每个分量的WignerVille分布(WVD)线性叠加

得到新的时频分布. 理论分析和仿真结果表明，提出的时频分析方法能有效抑制跳频信号的交叉项干扰，与

现有方法相比，具有更高的时频分辨率，更适合跳频信号的时频分析和参数估计.

关键词: 跳频信号, 信号分解, 时频分析, 交叉项, 时频分辨率

Abstract:

To make an analysis and estimate the parameters of frequencyhopping signal, a timefrequency analysis method based on signal decomposition is proposed according to the

characteristics of frequencyhopping signals. And a multicomponent frequencyhopping

signal is firstly decomposed into multiple singlecomponent signals with a

group of bandpass filters. The WignerVille distribution (WVD) of each component is

sum up to form a new timefrequency distribution. Simulation shows that the new time

frequency analysis method can effectively suppress crossterm interference of frequencyhopping signals. Compared with the existings, this new method preserves a higher time

frequency resolution. 

Key words: frequency-hopping signals, signal decomposition, time-frequency analysis, cross-term, time-frequency resolution

冯涛袁超伟. 跳频信号的时频分析新方法[J]. 北京邮电大学学报, 2010, 33(3): 10-14.

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跳频信号的时频分析新方法

A Method of TimeFrequency Analysis for 
FrequencyHopping Signals

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跳频信号的时频分析新方法

A Method of TimeFrequency Analysis for  FrequencyHopping Signals

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A Method of TimeFrequency Analysis for 
FrequencyHopping Signals