基于广义S变换的面波压制技术研究

英文篇名：Surface wave suppression technique based on generalized S-Transform analysis
中文刊名：能源技术与管理
英文刊名：Energy Technology and Management
作者：李杨 ; 董守华 ; 杜庆顺
英文作者：LI Yang ; DONG Shou-hua ; DU Qing-shun(China University of Mining And Technology ; Xuzhou 221116 China)
中文关键词：面波压制 ; 广义S变换 ; 时频域
英文关键词：Surface wave suppression ; generalized S-Transform(GST) ; time-frequency domain
出版日期：2009-06-28
机构：中国矿业大学资源与地球科学学院;淮委沂沭泗水利管理局;
年：2009
期：03
出版单位：能源技术与管理

摘要

利用时频分辨率可调的广义S变换方法压制面波,将时间域地震信号变换到时频域,在时频域确定干扰区域,利用时频滤波器压制面波,再变换回时间域,其结果是得到滤掉面波的地震信号。处理结果表明,广义S变换在时频域进行压制面波方法可以达到分频分时准确衰减面波的目的。
The paper shows a surface wave suppression method using generalized S-Transform whose time-frequency resolution can be adjustable.The method transforms seismic signal from time domain to time-frequency domain, and determines the interference regions in time-frequency domain.After eliminated surface wave with time-frequency filter, it is back to time domain to attain seismic sig nal and cut down surface wave.The results show that GST suppresses surface wave in time-fre quency domain with frequency dividing and time sharing efficiently.The real seismic records have been processed and the S/N ratio of the seismic has been improved.

引文

[1]Stockwell R G,Mansinha L,Lowe R P.Localization of the complex spectrum:the S transform[J].IEEE trans.on signal processing,1996,17:998~1001.
    [2]Pinnegar C R,Mansinha L.The S-Transform With Windows Of Arbitrary And Varying Shape[J].Geophysics,2003,68(1):381~385.
    [3]高静怀,陈文超,李幼铭,等.广义S变换与薄互层地震响应[J].地球物理学报,2003,46(4):526~532.
    [4]Pinnegar C R,Eaton D W.Application of S transform to prestack noise attenuation filtering[J].J.Geophys.Res.,2003,108(B9):1~10.