Numerical methods for multiscale inverse problems

Numerical methods for multiscale inverse problems
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DOI:
10.4310/cms.2017.v15.n2.a2
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发表时间:
2014-01
期刊:
arXiv: Numerical Analysis
影响因子:
--
通讯作者:
Christina Frederick;B. Engquist
Christina Frederick;B. Engquist
中科院分区:
其他
文献类型:
--
作者:
Christina Frederick;B. Engquist

文献摘要

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我们考虑从给定的解的测量值确定形式为$-\nabla\cdot (a^\epsilon\nabla u^\epsilon)+bu^\epsilon = f$的偏微分方程中的高振荡系数$a^\epsilon$的反问题。其中,$\epsilon$表示问题中最小的特征波长($0 0$),勘探地震学为$b < 0$。
We consider the inverse problem of determining the highly oscillatory coefficient $a^\epsilon$ in partial differential equations of the form $-\nabla\cdot (a^\epsilon\nabla u^\epsilon)+bu^\epsilon = f$ from given measurements of the solutions. Here, $\epsilon$ indicates the smallest characteristic wavelength in the problem ($0 0$, and exploration seismology, $b < 0$.