• 责任者：Wang Weidong (School of Geological Engineering and Geomatics ; Chang’an University ; Xi’an 710054 ; China) ; Zheng Yi
• 刊名：Journal of Seismological Research
• 出版年：2013
• 卷期：36(1)
• 关键词：时间域分析 ; time-domain analysis ; 频率域分析 ; frequency domain analysis
• 页码：p.103-107
• 图表：illus., 18 refs.
• 分类号：1600
• issnNo：ISSN1000-0666
• isbnNo：CN53-1062/P

Times New Roman">We compare the time-frequency spectrums of analog signal which was determined by continuous wavelet transform （CWT）, S-transform, Wigner-Ville distribution （WVD） and Hilbert-Huang transform （HHT） . The results show that HHT based on empirical mode decomposition （EMD） has higher adaptability and can ac- curately extract the time-frequency characteristics of the explosion signal. Then we analyze time-frequency spec- trum of broadband explosion vibration signal in actual by HHT, and time-frequency analysis results accurately described the time varying characteristics of the explosion vibration signal.