ISSN 0869-6632 (Print)
ISSN 2542-1905 (Online)

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Pavlov A. N., Runnova A. E., Hramov A. E. Time­frequency analysis of nonstationary processes: concepts of wavelets and empirical modes. Izvestiya VUZ. Applied Nonlinear Dynamics, 2011, vol. 19, iss. 2, pp. 141-157. DOI: 10.18500/0869-6632-2011-19-2-141-157

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57.087
DOI: 
10.18500/0869-6632-2011-19-2-141-157

Time­frequency analysis of nonstationary processes: concepts of wavelets and empirical modes

Autors: 
Pavlov Aleksej Nikolaevich, Saratov State University
Runnova Anastasia Evgenevna, Saratov State University
Hramov Aleksandr Evgenevich, Immanuel Kant Baltic Federal University
Abstract: 

A comparation of wavelets and empirical modes concepts is performed that represent the most perspective tools to study the structure of nonstationary multimode processes. Their advantages over the classical methods for time series analysis and restrictions of both approaches are discussed that needs to be known for correct interpretation of the obtained results. New possibilities in the study of signals structure at the presence of noise are illuctrated for digital single-channel experimental data of prospecting seismology.

Key words: 
wavelet-analysis
Hilbert-Huang transform
prospecting seismology
time series
time-frequency analysis
mode
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Received: 
26.11.2010
Accepted: 
09.03.2011
Published: 
31.05.2011
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