小波包对叠前地震面波的分离与信号重建  

Separation of pre-stack seismic surface wave and signal reconstruction by wavelet package.

作　　者：王振国[1] 周熙襄[1] 钟本善[1] 

机构地区：[1]成都理工大学

出　　处：《石油地球物理勘探》2002年第5期460-462,472,共4页Oil Geophysical Prospecting

摘　　要：王振国 ,周熙襄 ,钟本善 .小波包对叠前地震面波的分离与信号重建 .石油地球物理勘探 ,2 0 0 2 ,37(5 ) :4 6 0～ 4 6 2 ,4 72　　面波在地震勘探中是一种很强的干扰波 ,一般的处理方法有 :一维滤波、F - K滤波、τ- p变换等 ,但这些方法都侧重于考虑某一方面的单一特性或某种条件假设 ,因而具有一定的局限性。小波包变换是一种时频分析的方法 ,它能够对地震资料进行时频精细划分 ,并且可以分离出面波 ,然后经过小波包重构 ,可有效地剔除面波。小波包变换是一种十分有效的去噪方法。The surface wave is a strong interference wave in seismic exploration. The general methods for reducing it are: 1 D filtering, F K filtering, τ p transform, etc. that only are to pay particular attention to consider single feature or some conditional hypothesis, which have some limitation.Wavelet package transform is a method of time frequency analysis, which can do subtle division of seismic data in time frequency domain, separating surface wave effectively. After reconstruction of wavelet package, we can eliminate surface wave effectively. The wavelet package transform is a very effective noise elimination method.

关 键 词：小波包 叠前地震面波 分离 信号重建 地震勘探 时频分析 小波函数 正交分解 

分 类 号：P631.442[天文地球—地质矿产勘探]