Seismic noise attenuation method based on adaptive noise feedback strategy

ZHANG Baojin; CHENG Gu

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Seismic noise attenuation method based on adaptive noise feedback strategy

更新时间：2023-12-11

- Seismic noise attenuation method based on adaptive noise feedback strategy
- Acta Scientiarum Naturalium Universitatis SunYatseni Vol. 56, Issue 1, Pages: 145-150(2017)
- 作者机构：
  
  大多数去噪方法在去噪的同时会产生假象，导致去噪后的剖面保真度受到破坏。将噪声归结为非均衡噪声和均衡噪声两种类型，采用两步法策略进行噪声衰减，先衰减非均衡噪声，再衰减均衡噪声。针对两种噪声分布情况，建立指示因子NCR和SCR表示常规信噪分离后噪声剖面和信号剖面的可靠性。分析指示因子NCR和SCR对噪声和信号可靠性的指示意义，据此设计自适应噪声反馈系数，将信噪分离后的噪声剖面乘以自适应反馈系数并加回到信号剖面中，形成一种基于自适应噪声反馈机制的去噪方案。数据测试表明方法具有较好效果。
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2017，
  
  Published Online：25 January 2017，
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ZHANG Baojin, CHENG Gu. Seismic noise attenuation method based on adaptive noise feedback strategy. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 56(1):145-150(2017)
DOI：

ZHANG Baojin, CHENG Gu. Seismic noise attenuation method based on adaptive noise feedback strategy. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 56(1):145-150(2017) DOI：

摘要

大多数去噪方法在去噪的同时会产生假象，导致去噪后的剖面保真度受到破坏。将噪声归结为非均衡噪声和均衡噪声两种类型，采用两步法策略进行噪声衰减，先衰减非均衡噪声，再衰减均衡噪声。针对两种噪声分布情况，建立指示因子NCR和SCR表示常规信噪分离后噪声剖面和信号剖面的可靠性。分析指示因子NCR和SCR对噪声和信号可靠性的指示意义，据此设计自适应噪声反馈系数，将信噪分离后的噪声剖面乘以自适应反馈系数并加回到信号剖面中，形成一种基于自适应噪声反馈机制的去噪方案。数据测试表明方法具有较好效果。

Abstract

Most seismic noise attenuation methods will reduce the data fidelity. A kind of adaptive noise attenuation scheme based on feedback mechanism is introduced in this paper. Noises in seismic data are classified into two categories: unbalanced and balanced noises. Two-step strategy is taken. The unbalanced noises are attenuated first and then the balanced noises. Two indicators NCR and SCR are established to denote the reliability of noise and signal section aiming at the two kinds of noises. The meanings of NCR and SCR are analyzed

adaptive noise feedback coefficient is designed based on the two indicators

the simultaneous enhancement of signal-to-noise ratio and fidelity is achieved. Tests demonstrate that the method is effective.

关键词

噪声衰减保真度信噪比自适应反馈

Keywords

noise attenuationfidelitysignal-to-noise ratioself-adaptionfeedback

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