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arXiv 1404.4147math-phmath.DGmath.MP
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障碍物散射的旅行时间

Travelling times in scattering by obstacles

Lyle Noakes, Luchezar Stoyanov

摘要:

本文讨论了在欧氏空间中由障碍物外部广义测地线的长度测量恢复障碍物信息的问题。主要结果是:如果两个障碍物满足某些一般正则性条件,且具有(几乎)相同的旅行时间,则它们外部的广义测地线流在相空间的非陷波部分上共轭,且保时共轭.在两个严格凸域在平面上的工会的情况下,一个建设性的算法来恢复的障碍物的旅行时间。

英文摘要:

The paper deals with some problems related to recovering information about an obstacle in an Euclidean space from certain measurements of lengths of generalized geodesics in the exterior of the obstacle. The main result is that if two obstacles satisfy some generic regularity conditions and have (almost) the same traveling times, then the generalized geodesic flows in their exteriors are conjugate on the non-trapping part of their phase spaces with a time preserving conjugacy. In the case of a union of two strictly convex domains in the plane, a constructive algorithm is described to recover the obstacle from traveling times.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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