基于低冗余度曲波变换的三维地震信号处理  

Three-dimensional Seismic Denoising Based on Low Redundancy Curvelet Transform

作　　者：胡之英[1] 

机构地区：[1]西安翻译学院,陕西西安710105

出　　处：《宁夏大学学报（自然科学版）》2017年第4期347-352,共6页Journal of Ningxia University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(41204075)

摘　　要：地震信号的插值和去噪问题是地震信号处理的重要研究内容,基于稀疏变换的方法将地震信号在变换域中稀疏表示,根据信号和噪声在变换域的不同表现采用阈值法实现插值和去噪.介绍了一种低冗余度三维曲波变换,并将其用于地震信号的插值和去噪.数值结果表明,该变换冗余度低,在保证曲波变换对地震信号处理有较好的数值效果的同时,将计算速度提高了4倍左右.Contamination of seismic signal with noise is one of the main challenges during seismic data processing.Based on sparse transform method,the seismic signals are sparse expressed in the transform domain.According to the different performance of signal and noise in the transform domain,threshold method is used to realize interpolation and denoising.A low redundancy 3 D curvelet transform is introduced,and it is applied to interpolation and denoising of seismic signals.Numerical results show that the conversion is low redundancy,and the calculation speed is increased about four times when the curvelet transform has good numerical effect on seismic signal processing.

关 键 词：CURVELET变换 去噪 低冗余度 稀疏优化 

分 类 号：P631.4[天文地球—地质矿产勘探] TP391.41[天文地球—地质学]