基于Gabor框架合成小波束叠前深度偏移  

Beamlet Pre-Stack Depth Migration Based on Gabor Frame Theory

作　　者：张恩嘉[1] 王西冲[1] 梁栋[1] 唐小彪[1] 

机构地区：[1]成都理工大学地球探测与信息技术教育部重点实验室,成都610059

出　　处：《CT理论与应用研究（中英文）》2009年第3期38-45,共8页Computerized Tomography Theory and Applications

摘　　要：利用小波束域波场分解和传播在空间及方向上的双重局域性,通过Fourier传播算子进行深度外推波场,完成小波束的传播,最终应用成像条件求取成像值。合成小波束和小束源记录,进行部分小束源叠前偏移成像的数值试验,获得的成像结果表明,小波束叠前深度成像是切实有效的。Base on beamlet＇s local dualism in both wavefield decomposition and space propagation, use the Fourier propagate operator to complete the propagation of the beamlet, combine the imaging conditions to gain the imaging value and then imaging.To testify the theory, first construct beamlet and the beam source record, then apply it to pre-stack depth migration numerical experimentation, the outcome is inspiring. It also testified that the beamlet pre-stack migration is both effective and efficient.

关 键 词：小波束 波场分解 Fourier传播算子 叠前偏移 

分 类 号：P631.4[天文地球—地质矿产勘探]