去假频高分辨率τ-p变换法波场分离  

De-aliasing high resolution τ-p transform and its application to wave fields separation

作　　者：刘保童[1] 朱光明[1] 

机构地区：[1]西安科技大学地质与环境工程系

出　　处：《煤田地质与勘探》2006年第2期70-73,共4页Coal Geology & Exploration

摘　　要：τ-p变换是消除相干噪声、波场分离的重要方法之一,但常规τ-p变换存在算子假频和端点效应,分辨率太低,无法直接使用。本文提出一种新的非迭代高分辨率τ-p变换方法,可同时压制假频和端点效应,提高了变换域的分辨率。通过理论模型记录与实际资料的试验表明了该方法的有效性。The τ - p transform is one of the important techniques to eliminate coherent noises and separate wave fields, but the operator aliasing artifacts and edge effect artifacts affect its resolution, therefore the conventional τ - p transform can＇t be used simply. This paper presents a new non-iteration high- resolution τ - p transform procedure which can suppress aliasing artifacts and edge effect artifacts simultaneously and improve resolution. The results show that the new procedure is effective by processing the synthetic seismogram and real data.

关 键 词：Τ-P变换 算子假频 端点效应 波场分离 相干噪声 

分 类 号：P631.443[天文地球—地质矿产勘探]