PHASE ERRORS OF FINITE-DIFFERENCE MIGRATION

被引：4
|
作者：
BEAUMONT, CM [1 ]
BOYCE, JF [1 ]
SILVA, R [1 ]
机构：
[1] SEISMOG SERV ENGLAND LTD,KESTON BR2 6HD,KENT,ENGLAND
来源：
GEOPHYSICAL PROSPECTING | 1987年 / 35卷 / 03期
关键词：
DATA PROCESSING - Data Reduction and Analysis - MATHEMATICAL TECHNIQUES - Finite Difference Method - MATHEMATICAL TRANSFORMATIONS - SIGNAL FILTERING AND PREDICTION;
D O I：
10.1111/j.1365-2478.1987.tb00817.x
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
A quantitative analysis of the various approximations to the scalar wave equation used in seismic migration can be obtained by a study of the resulting phase errors. In the space-time domain the effects of different modes of parameter optimization are displayed. In the space-frequency domain the spatial derivatives may be expanded as a linear filter operator whose coefficients are determined by requiring that the resulting phase shifts agree with those that arise from planar wave solutions of the exact wave equation over a range of angles and frequencies. (Author abstact)
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页码：267 / 280
页数：14
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