• 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