Time-frequency analysis of explosion seismic signal based on improved matching pursuit

Zhong Mingshou; Zhou Hui; Liu Ying; Long Yuan; Guo Tao

doi:10.11883/1001-1455(2017)06-0931-08

Volume 37 Issue 6

Sep. 2017

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Zhong Mingshou, Zhou Hui, Liu Ying, Long Yuan, Guo Tao. Time-frequency analysis of explosion seismic signal based on improved matching pursuit[J]. Explosion And Shock Waves, 2017, 37(6): 931-938. doi: 10.11883/1001-1455(2017)06-0931-08

Citation:

Zhong Mingshou, Zhou Hui, Liu Ying, Long Yuan, Guo Tao. Time-frequency analysis of explosion seismic signal based on improved matching pursuit[J]. Explosion And Shock Waves, 2017, 37(6): 931-938. doi: 10.11883/1001-1455(2017)06-0931-08

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Time-frequency analysis of explosion seismic signal based on improved matching pursuit

doi: 10.11883/1001-1455(2017)06-0931-08

College of Field Engineering, PLA University of Science & Technology, Nanjing 210007, Jiangsu, China

Received Date: 2016-04-15
Rev Recd Date: 2016-07-27
Publish Date: 2017-11-25

Abstract

Abstract

Abundant underground rock information can be obtained through the analysis of time-frequency of explosive seismic wave signals, which lays a foundation for further research on characteristics of explosive seismic waves. In this study, based on the non-stationary random nature of the explosive seismic signals, we presented an improved matching pursuits (MP) algorithm to extract the time-frequency information of explosive seismic signals, namely using the Hilbert transformation to convert the signal into a plural signal to acquire the instantaneous frequency and phase parameter of the signal and then decomposing the signal to a series of wavelets. Thus the operation rate was significantly improved and the Wigner Ville distributions (WVD) and its time frequency were calculated with the influence of the cross interference term effectively eliminated. This method has been used to take a time-frequency analysis of an actual explosive seismic wave signal and has acquired a time-frequency distribution with a high resolution and operation rate.
- explosive seismic wave,
- matching pursuits,
- plural signal,
- time-frequency analysis

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References(11)

References

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