DocumentCode :
2613329
Title :
The study of the intermittency test algorithm to eliminate mode mixing
Author :
Jingsong, Li ; Quan, Liu ; Hang, Su
Author_Institution :
Sch. of Inf. Eng., Wuhan Univ. of Technol., Wuhan, China
Volume :
5
fYear :
2011
fDate :
15-17 Oct. 2011
Firstpage :
2384
Lastpage :
2387
Abstract :
Hilbert-Huang Transform (HHT) is a new data analysis method presented by Norden E. Huang. HHT theory is considered as a great breakthrough of linear and stationary spectrum analysis based on Fourier transform in recent years. It is based on the signal´s local characteristics, especially adaptive for the analysis of the non-linear and non-stationary signals which frequency varies with time. One of the major problems of the HHT method is the appearance of mode mixing. Mode mixing is defined as an Intrinsic Mode Function (IMF) including oscillations of dramatically disparate scales, or a component of a similar scale residing in different IMFs. It is a result of signal intermittency. This paper studies the mode mixing problem, discusses the multi-component signal model, establishes one kind of the intermittency test algorithm, and gives the simulation examples. The simulation results show that the intermittency test algorithm is feasible and effective for the intermittency signals.
Keywords :
Hilbert transforms; signal processing; spectral analysers; Fourier transform; Hilbert Huang transform; eliminate mode mixing; intermittency test algorithm; intrinsic mode function; linear and stationary spectrum analysis; multi component signal model; nonstationary signals; signal intermittency; Algorithm design and analysis; Noise; Signal processing algorithms; Time frequency analysis; Time series analysis; Transforms; EMD; HHT; intermittency test; mode mixing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Image and Signal Processing (CISP), 2011 4th International Congress on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-9304-3
Type :
conf
DOI :
10.1109/CISP.2011.6100742
Filename :
6100742
Link To Document :
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