Análise de condições de imagem na migração reversa no tempo .
The time reversal property of two way wave equations is the base of several imaging methods in exploration seismology and medicine. The mathematical formulation of time reversal for acoustic media are revisited and applied to an asymptotic analysis of reverse time migration (RTM), using imaging c...
| Autor principal: | ALCÂNTARA, Mailton Rian Mota |
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| Grau: | Trabalho de Conclusão de Curso - Graduação |
| Publicado em: |
2019
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| Assuntos: | |
| Acesso em linha: |
http://bdm.ufpa.br/jspui/handle/prefix/1720 |
| Resumo: |
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The time reversal property of two way wave equations is the base of several imaging
methods in exploration seismology and medicine. The mathematical formulation of time
reversal for acoustic media are revisited and applied to an asymptotic analysis of reverse
time migration (RTM), using imaging condition of crosscorrelation type and the method
of stationary phase. Alternative imaging conditions are proposed to improve amplitude
recovery in RTM. Numerical experiments evaluate the sensitivity of the proposed imaging
conditions and focalization of RTM to perturbations to perturbations on the velocity
model. |