Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2010, Vol. 33 ›› Issue (3): 10-14.doi: 10.13190/jbupt.201003.10.032

• Papers • Previous Articles     Next Articles

A Method of TimeFrequency Analysis for 

FrequencyHopping Signals

FENG Tao1,2,  YUAN Chaowei1   

  1. (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

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