| 宽频去噪技术在地震资料处理中的应用 |
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| 引用本文： | 柴铭涛.宽频去噪技术在地震资料处理中的应用[J].物探与化探,2007,31(Z1):60-62. |
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| 作者姓名： | 柴铭涛 |
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| 作者单位： | 中国地质大学,北京,100083;中国地质科学院,地球物理地球化学勘查研究所,河北,廊坊,065000 |
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| 摘 要： | 提高地震资料的信噪比是地震资料处理的关键,叠前去噪是进行噪声压制的主要处理技术。小波变换方法由于具有同时在时间域与频率域分析的特点,在信号的分析处理方面得到广泛的应用;笔者采用小波变换把叠前地震数据分为不同的频段,并对包含干扰波的频段采用中值滤波消除干扰,再运用小波反变换来重构去噪后的记录;该技术不仅实现了噪声压制,还达到了保持宽频带的目的,应用于实际资料处理中,取得了很好的去噪效果。
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| 关 键 词： | 地震数据处理 小波变换 中值滤波 宽频去噪 |
| 文章编号： | 1000-8918(2007)S0-0060-03 |
| 修稿时间： | 2007年8月23日 |
THE APPLICATION OF WIDE FREQUENCY BAND NOISE ELIMINATION TECHNOLOGY TO SEISMIC DATA PROCESSING |
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| CHAI Ming-tao.THE APPLICATION OF WIDE FREQUENCY BAND NOISE ELIMINATION TECHNOLOGY TO SEISMIC DATA PROCESSING[J].Geophysical and Geochemical Exploration,2007,31(Z1):60-62. |
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| Authors: | CHAI Ming-tao |
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| Abstract: | The improvement of the S/N ratio of seismic data in seismic processing is very important.The main phase of data processing is pre-stack noise elimination.Wavelet transform(WT) has been widely used in many data-processing fields in that it can analyze the data both in time and in the frequency domain.In this paper,pre-stack seismic data are divided into different frequencies by using the wavelet transform technology.The noise in some frequency bands containing coherence interference is eliminated by median filtering,and records after noise elimination are reconstructed by reverse wavelet transform.The method expounded in this paper can not only eliminate noise but also keep enough wide frequency bands.Its application to practical data-processing work has yielded significant results. |
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| Keywords: | seismic data processing wavelet transform median filtering wide frequency band noise elimination |
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