| 基于广义S变换的地震资料信噪分离方法 |
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| 引用本文： | 张晓峰.基于广义S变换的地震资料信噪分离方法[J].物探化探计算技术,2010,32(5):480-483. |
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| 作者姓名： | 张晓峰 |
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| 作者单位： | 成都理工大学沉积地质研究院;四川省广安市科技局; |
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| 摘 要： | 基于S变换具有良好的时频聚焦性和分时分频性,将可灵活选取窗函数的广义S变换引入到地震信号去噪处理中,系统研究了广义S变换在地震资料信噪分离中的应用。首先对地震数据进行广义S变换,然后对含噪频率剖面选取适当阈值压制噪声干扰,提取有效信号,最后重构得到去噪后的记录。经合成记录和实际地震资料处理实验证明,该方法能有效地进行信噪分离,提高地震剖面信噪比和分辨率。
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| 关 键 词： | S变换 广义S变换 信噪比 分辨率 阈值 |
A separation method of seismic signal and noises based on the generalized S transforms |
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| ZHANG Xiao-feng.A separation method of seismic signal and noises based on the generalized S transforms[J].Computing Techniques For Geophysical and Geochemical Exploration,2010,32(5):480-483. |
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| Authors: | ZHANG Xiao-feng |
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| Institution: | ZHANG Xiao-feng1,2(1.Institute of Sedimentary of Geology,Chengdu University of Technology,Chengdu 610059,China,2.Guang'an Science and Technology Bureau of Sichuan Province,Guang'an 638000,China) |
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| Abstract: | Based on the good time-frequency focusing and time-frequency division characteristics of S transform,this paper introduces the generalized S transform (GST) to process the seismic signal,which can flexibly chose the window function,and systematically studies the application of GST in the signal-noise separation of seismic data.This paper firstly uses the generalized S transform to decompose seismic data and selects suitable threshold to suppress the noises for the noisy frequency profile,and then extract si... |
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| Keywords: | S-transform generalized S-transform SNR resolution threshold |
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