| 混合域单程波传播算子及其在偏移成像中的应用 |
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| 引用本文： | 陈生昌,曹景忠,马在田.混合域单程波传播算子及其在偏移成像中的应用[J].地球物理学进展,2003,18(2):210-217. |
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| 作者姓名： | 陈生昌 曹景忠 马在田 |
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| 作者单位： | 同济大学教育部海洋地质重点实验室,上海,200092 |
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| 基金项目： | 国家自然科学基金委与大庆石油管理局联合项目 ( 4 9894910-2 4)资助 . |
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| 摘 要： | 以地震波的单程波传播方程为基础,利用算子近似展开的方法推导出了当前波动方程叠前深度偏移方法研究中广泛使用的裂步Fourier、Fourier有限差分和广义屏传播算子的一般形式及其近似式．讨论了它们间差异、相互关系以及他们的特点,最后给出了基于裂步Fourier、Fourier有限差分和广义屏传播算子的偏移成像方法时Marmousi模型的偏移成像结果,以说明它们间的优劣与计算效率．
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| 关 键 词： | 混合域 单程波 传播算子 偏移成像 |
| 文章编号： | 1004-2903(2003)02-0210-08 |
| 修稿时间： | 2002年1月15日 |
Mixed-domain one-way wave propagator and its application in migration image |
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| CHEN Sheng-chang,CAO Jing-zhong,MA Zai-tian.Mixed-domain one-way wave propagator and its application in migration image[J].Progress in Geophysics,2003,18(2):210-217. |
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| Authors: | CHEN Sheng-chang CAO Jing-zhong MA Zai-tian |
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| Abstract: | In this paper, the general forms and its approximation forms of split-step Fourier, Fourier finite-difference and generalized-screen propagators that are widely used at present in wave-equation pre-stack depth migration, are derived by means of the approximation expansion of operator, based on the one-way wave equation of seismic wave. Firstly, the discussion on their differences, relations and their characters are given, then, the migration results of Marmousi model by the migration methods based on the split-step Fourier, Fourier finite-difference and generalized-screen propagators are presented, in order to show their advantage-disadvantages and efficiency in calculation.WT5"HZ |
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| Keywords: | mixed-domain one-way wave propagator migration image |
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