HHT time-frequency analysis of digital seismic waveform signals

Author

Wu, Anxu

Author_Institution

Earthquake Adm. of Beijing Municipality, Beijing, China

fYear

2012

fDate

29-31 May 2012

Firstpage

1802

Lastpage

1806

Abstract

The paper introduces HHT time-frequency analysis and the concept of instantaneous frequency, determines the empirical mode decomposition of a given signal and its time-frequency distribution and applies HHT time-frequency processing and analysis to the actual seismic waveform signals. Results show that the HHT method can accurately describe the nonlinear time variation of seismic waveform signals and is a powerful tool in seismic signal time-frequency analysis.

Keywords

Hilbert transforms; geophysical signal processing; seismic waves; time-frequency analysis; waveform analysis; HHT time-frequency analysis; HHT time-frequency processing; Hilbert-Huang transform; digital seismic waveform signal; empirical mode decomposition; instantaneous frequency; nonlinear time variation; seismic signal time-frequency analysis; time-frequency distribution; Earthquakes; Fourier transforms; Frequency shift keying; Seismic waves; Time frequency analysis; Wavelet transforms; hilbert-huang transform; instantaneous frequency; seismic waveform; time-frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Fuzzy Systems and Knowledge Discovery (FSKD), 2012 9th International Conference on

Conference_Location

Sichuan

Print_ISBN

978-1-4673-0025-4

Type

conf

DOI

10.1109/FSKD.2012.6234242

Filename

6234242