一种快速有效的地震道空间内插方法
|
摘要
地震道空间内插所面临的主要问题是空间假频。为此 ,Spitz( 1 991年 )提出了一种 t- x域道内插方法可以很有效地克服空间假频 ,其数学基础是单位步长预测滤波技术。最近 ,在 Spitz工作的基础上 ,Porsani( 1 999年 )提出了一种半步长预测滤波技术 ,它可以将原来用于求解预测滤波器系数的两组复杂的复线性系统方程简化为一组更为简单的复线性系统方程 ,从而大大降低了运算工作量。合成数据及实际地震记录的试处理结果表明 ,这种新的内插算法非常快速、有效 ,且易于实施。
The main problem faced to seismic trace interpolation is how to handle spatially aliased events. Therefor, Spitz(1991) presented a trace interpolation approach in t x domain to conquer spatial alias, and its mathematical elementary is unit step prediction filtering technique. Recently, based on Spitz's work, Porsani(1999) presented a half step prediction filtering technique which simplified the two original prolix complex linear equation systems for calculating coefficients of prediction filter as a more simplex one so as to reduce computational cost greatly. The results of trial application to synthetic data and real seismic records show that the new interpolation algorithm is very fast, effective and easy to implement.
The main problem faced to seismic trace interpolation is how to handle spatially aliased events. Therefor, Spitz(1991) presented a trace interpolation approach in t x domain to conquer spatial alias, and its mathematical elementary is unit step prediction filtering technique. Recently, based on Spitz's work, Porsani(1999) presented a half step prediction filtering technique which simplified the two original prolix complex linear equation systems for calculating coefficients of prediction filter as a more simplex one so as to reduce computational cost greatly. The results of trial application to synthetic data and real seismic records show that the new interpolation algorithm is very fast, effective and easy to implement.
引文
[1] Gulunary N,Chambers R E. Unaliased f-k dom ain trace interpolation( UF KI) [D] . SEG.66thann. Mtg. Expanded A bstracts,1998:14 61.
[2 ] Porsani M J. Seismic trace interpolation using half-step prediction filters[J] . Geophysics,1999,64 ( 5 ) :14 61.
[3 ] Spitz S.Seismic trace interpolation[J] .Geophysics,1991,5 0 ( 1) :785 .
[4] 周竹生 ,赵荷晴 .广义共轭梯度算法 [J] .物探与化探 ,1996,2 0 ( 5 ) :3 5 1.
[2 ] Porsani M J. Seismic trace interpolation using half-step prediction filters[J] . Geophysics,1999,64 ( 5 ) :14 61.
[3 ] Spitz S.Seismic trace interpolation[J] .Geophysics,1991,5 0 ( 1) :785 .
[4] 周竹生 ,赵荷晴 .广义共轭梯度算法 [J] .物探与化探 ,1996,2 0 ( 5 ) :3 5 1.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心