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arXiv · 1805.00593

The enclosure method for inverse obstacle scattering over a finite time interval: V. Using time-reversal invariance

Masaru Ikehata
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Abstract

The wave equation is time-reversal invariant. The enclosure method using a Neumann data generated by this invariance is introduced. The method yields the minimum ball that is centered at a given arbitrary point and encloses an unknown obstacle embedded in a known bounded domain from a single point on the graph of the so-called response operator on the boundary of the domain over a finite time interval. The occurrence of the lacuna in the solution of the free space wave equation is positively used.

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Masaru Ikehata. 2018-05-02. The enclosure method for inverse obstacle scattering over a finite time interval: V. Using time-reversal invariance. https://doi.org/10.1515/jiip-2018-0046

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