Reverse-time Migration: Amplitude And Implementation Issues
Reverse-time Migration: Amplitude And Implementation Issues
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DOI:
10.1190/1.2792912
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发表时间:
2007
期刊:
影响因子:
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通讯作者:
Yu Zhang;James Sun;S. Gray
中科院分区:
文献类型:
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作者:
Yu Zhang;James Sun;S. Gray
We formulate reverse-time migration (RTM) based on the theory of true-amplitude migration, and we give formulations for true-amplitude RTM angle-domain common-image gathers. Then we address some implementation issues for RTM. Specifically, we compare RTM’s efficiency using different orders of finite differencing along the time direction. Finally, we propose “harmonic-source migration”, a phase-encoding technique that allows increased efficiency in a delayed-shot implementation of RTM.