DocumentCode :
3263976
Title :
Instantaneous Frequency Extraction via Wavelet Ridge
Author :
Xiao-fei, Shuai ; Xiao, Yuan
Author_Institution :
Sch. of Electron. & Inf., Sichuan Univ., Chengdu
Volume :
1
fYear :
2006
fDate :
25-28 June 2006
Firstpage :
253
Lastpage :
257
Abstract :
A new algorithm, which is used to detect the continuous wavelet transform ridges of the asymptotic signals based on the least energy gradient, is presented. Instantaneous frequency of the analyzed signal, even with white noise, can be efficiently extracted from these ridges. In particular, specific examples are given which demonstrate the performance of this algorithm is good. Theoretical analysis and results of numerical simulations show that the instantaneous frequency information can be extracted precisely when the Morlet wavelet is adopted
Keywords :
gradient methods; signal processing; wavelet transforms; white noise; Morlet wavelet; asymptotic signal; continuous wavelet transform ridges; frequency information extraction; least energy gradient; numerical simulation; white noise; Continuous wavelet transforms; Data mining; Frequency; Information analysis; Numerical simulation; Signal analysis; Signal processing algorithms; Skeleton; Wavelet analysis; Wavelet transforms;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, Circuits and Systems Proceedings, 2006 International Conference on
Conference_Location :
Guilin
Print_ISBN :
0-7803-9584-0
Electronic_ISBN :
0-7803-9585-9
Type :
conf
DOI :
10.1109/ICCCAS.2006.284629
Filename :
4063873
Link To Document :
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