arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1801.02008math.AP
收藏

Maxwell系统中嵌入障碍物及其周围介质的恢复

Recovery of an embedded obstacle and the surrounding medium for Maxwell's system

Youjun Deng, Hongyu Liu, Xiaodong Liu

摘要:

本文研究了由相应的远场电场数据恢复复杂散射体的电磁散射逆问题。复杂散射体由非均匀介质和可能嵌入的理想导电(PEC)障碍物组成。远场数据对应于具有固定入射方向和固定偏振的入射平面波收集,但是频率来自开区间。结果表明,嵌入的障碍物可以唯一地恢复上述远场数据,独立于周围的介质。此外,如果周围的介质是分段均匀的,那么介质也可以被恢复。这些独特的恢复结果是新的文献。我们的论点是基于电磁场的低频扩展和某些调和分析技术。

英文摘要:

In this paper, we are concerned with the inverse electromagnetic scattering problem of recovering a complex scatterer by the corresponding electric far-field data. The complex scatterer consists of an inhomogeneous medium and a possibly embedded perfectly electric conducting (PEC) obstacle. The far-field data are collected corresponding to incident plane waves with a fixed incident direction and a fixed polarisation, but frequencies from an open interval. It is shown that the embedded obstacle can be uniquely recovered by the aforementioned far-field data, independent of the surrounding medium. Furthermore, if the surrounding medium is piecewise homogeneous, then the medium can be recovered as well. Those unique recovery results are new to the literature. Our argument is based on low-frequency expansions of the electromagnetic fields and certain harmonic analysis techniques.

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。

↑