| 改善地震勘探记录的4项技术 |
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| 引用本文： | 杨宝俊,李月,刘晓华,金雷,赵雪平,袁野,高颖.改善地震勘探记录的4项技术[J].吉林大学学报(地球科学版),2006,36(5):856-862. |
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| 作者姓名： | 杨宝俊 李月 刘晓华 金雷 赵雪平 袁野 高颖 |
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| 作者单位： | 1．吉林大学 地球探测科学与技术学院， 长春 130026;2．吉林大学 通信工程学院， 长春 130012 |
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| 摘 要： | 为改善地震勘探记录、提高信噪比，近年来提出了基于混沌理论的混沌振子滤波技术（CVM）、基于多道最小平方原理和CVM的时空域双曲滤波技术（HTDF）、基于时频分析和Wigner-Ville分布的时频峰值滤波技术（TFPF）以及基于独立分量分析（ICA）的多次波消减技术。用CVM技术可以在强随机噪声背景中确定同相轴的时空位置；HTDF是CVM的后续处理，使湮没在噪声中的同相轴显现出来。大量仿真实验和实际资料处理表明，TFPF技术可应用于消减地震记录中的随机噪声。基于ICA的多次波消减技术可确定输出信号的振幅和次序。上述4项技术若应用于实际资料，尚需要分别解决诸如计算时间、辅助性处理、因子振幅谱补频、变时窗技术、处理流程的系统工程等问题。
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| 关 键 词： | 混沌振子滤波 时空域双曲滤波 时频峰值滤波 多次波消减 |
| 文章编号： | 1671-5888(2006)05-0856-07 |
| 收稿时间： | 2006-07-26 |
| 修稿时间： | 2006年7月26日 |
Four Processing Techniques for Improving the Seismic Prospecting Records |
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| YANG Bao-jun,LI Yue,LIU Xiao-hua,JIN Lei,ZHAO Xue-ping,YUAN Ye,GAO Ying.Four Processing Techniques for Improving the Seismic Prospecting Records[J].Journal of Jilin Unviersity:Earth Science Edition,2006,36(5):856-862. |
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| Authors: | YANG Bao-jun LI Yue LIU Xiao-hua JIN Lei ZHAO Xue-ping YUAN Ye GAO Ying |
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| Institution: | 1.College of GeoExploration Science and Technology, Jilin University, Changchun 130026,China;2. College of Telecommunication, Jilin University, Changchun 130012,China |
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| Abstract: | Recent years, to improve seismic prospecting records and increasing signal-to-noise ratio, some filtering techniques have been presented, such as the chaotic vibrator method (CVM) based on chaotic theory, the hyperbolic time-distance relation filtering (HTDF) based on the least-squares algorithm, the time-frequency peak filtering (TFPF) based on the time-frequency analysis and Wigner-Ville distribution, the technique decreasing multiples based on independent component analysis (ICA). The CVM is applied to ascertain the location of events with strong random noise. The HTDF is the processing technique following CVM to obtain a clear event recovery from the seismic prospecting records corrupted by random noise. Tests of these methods on both simulation experiments and practical seismic data processing show that the TFPF technique can successfully decrease the random noise. The technique to attenuation multiples based on ICA can differentiate the output signals. However, above four techniques have still some questions which require to be solved, such as the computation efficiency, the assistant processing, the supplement-frequency method of amplitude spectra of the filtering factors, the adapting time-window technique, the systematism of processing performance and so on. Above processing techniques are a part of theory and method in seismic data processing. |
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| Keywords: | chaotic vibrator filtering hyperbolic time-distance relation filtering the time-frequency peak filtering decreasing multiples |
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