TT-transform and its application in surface wave suppression
In seismic exploration, surface wave often needs to be suppressed as interference wave so the effective wave can be highlighted. This paper presents TT-transform based on S-transform to suppress surface wave. Because the surface wave has lower frequency than other effective wave and TT transform has good frequency conversion ability, it gathers the high frequency signal in diagonal position of TT spectrum. Namely, the range of high frequency signal is more narrow than low frequency signals near the diagonal of TT spectrum. So we can suppress the surface wave through extracting the diagonal elements of TT spectrum. The result of numerical simulation and real seismic data processing reflects the nature of the TT transform and its effectiveness of suppressing surface wave.
Surface wave suppression Time-frequency analysis TT-transform S-transform
Jianqing Ma Qingchun Li
School of Geological Engineering and Geomatics, Changan University, Xi an 710054,China School of Geological Engineering and Geomatics, Changan University, Xi an 710054, China
国际会议
成都
英文
195-199
2010-06-14（万方平台首次上网日期，不代表论文的发表时间）