| 地震资料信噪比估算方法改进 |
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| 引用本文： | 王红玲,詹毅,张朝霞.地震资料信噪比估算方法改进[J].物探化探计算技术,2007,29(3):189-192. |
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| 作者姓名： | 王红玲 詹毅 张朝霞 |
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| 作者单位： | 成都理工大学,信息工程学院,四川,成都,610059 |
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| 摘 要： | 在存在相关干扰的地震资料中,用以往的方法估算信噪比(Signal-to-Noise),往往存在较大的误差。这里提出了利用F-K滤波分离相关干扰,然后用相关时移法估算有效信号,再利用有效信号与总干扰之能量比来计算信噪比。通过模型实验和实际资料试算证实,这种改进的信噪比估算方法,对于存在有相关干扰的资料,能够较准确地估算出真实信噪比。
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| 关 键 词： | 相关干扰 相关时移法 信噪比 F-K滤波 |
| 文章编号： | 1001-1749(2007)03-0189-04 |
| 修稿时间： | 03 12 2006 12:00AM |
An improved method of estimating signal-to-noise ratio of seismic data |
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| WANG Hong-ling,ZHAN Yi,ZHANG Zhao-xia.An improved method of estimating signal-to-noise ratio of seismic data[J].Computing Techniques For Geophysical and Geochemical Exploration,2007,29(3):189-192. |
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| Authors: | WANG Hong-ling ZHAN Yi ZHANG Zhao-xia |
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| Abstract: | Using old methods to estimate signal-to-noise ratio can cause large error when the seismic data having correlated noise.A new method is used to this condition in the paper.Firstly,correlated noise is divided from seismic data by using filtering in F-K domain.Secondly,using time shifting correlation method to estimate signal energy.Thirdly,signal-to-noise ratio is calculated by using the energy ratio of the signal to total noise.The testing of model and seismic data verify that the new method can estimate acutely the real signal-to-noise to seismic data with correlated noise. |
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| Keywords: | correlated noise time shifting correlation method signal-to-noise ratio filter in F-K domain |
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