Joint Time-Frequency Analysis of Seismic Signals:A Critical Review

• 作者: Roshan Kumar Vikash Singh Wei Zhao
• 来源期刊: 结构耐久性与健康监测(英文)
• 学科: 地球科学
• 关键词: TIME-FREQUENCY DISTRIBUTION Seismic signals CROSS-TERM INTERFERENCE Autoterm GABOR TRANSFORM Wigner-Ville DISTRIBUTION
• 年，卷（期）: 2018,（2）
• 页码范围: 65-83
• 页数: 19页
• 分类号: P31

摘要

This paper presents an evaluation of time-frequency methods for the analysis of seismic signals.Background of the present work is to describe,how the frequency content of the signal is changing in time.The theoretical basis of short time Fourier transform,Gabor transform,wavelet transform,S-transform,Wigner distribution,Wigner-Ville distribution,Pseudo Wigner-Ville distribution,Smoothed Pseudo Wigner-Ville distribution,Choi-William distribution,Born-Jordan Distribution and cone shape distribution are presented.The strengths and weaknesses of each technique are verified by applying them to a particular synthetic seismic signal and recorded real time earthquake data.