DocumentCode
3183085
Title
Decomposition of seismic signal via chirplet transform
Author
Fan, Wanchun ; Zou, Hongxing ; Sun, Yu ; Li, Zhenfu ; Shi, Ren
Author_Institution
Dept. of Autom. Control, Xi´´an Jiaotong Univ., China
Volume
2
fYear
2002
fDate
26-30 Aug. 2002
Firstpage
1778
Abstract
An important challenge in identifying a seismic event is to specify its signal features. The time-varying features of a real time-sampled seismic signal are represented and characterized via the chirplet transform. A time-varying spectrogram template based on the chirplet transform of an underground nuclear explosion is built. The nonstationary template makes the recognition of seismic events (earthquakes and underground nuclear explosions) effortless.
Keywords
earthquakes; feature extraction; geophysical signal processing; nuclear explosions; seismometers; time-frequency analysis; transforms; Comprehensive Nuclear-Test-Ban Treaty verification; chirplet transform; earthquakes; joint time-frequency analysis; seismic events; seismic signal decomposition; signal feature identification; spectrogram template; time-varying features; underground nuclear explosion; Automation; Chirp; Earthquakes; Explosions; Fourier transforms; Seismology; Signal processing; Spectrogram; Time frequency analysis; Wavelet transforms;
fLanguage
English
Publisher
ieee
Conference_Titel
Signal Processing, 2002 6th International Conference on
Print_ISBN
0-7803-7488-6
Type
conf
DOI
10.1109/ICOSP.2002.1180147
Filename
1180147
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