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Some New Aspects of the Reflection of Electromagnetic Waves on a Rough Surface

机译:粗糙表面上电磁波反射的一些新方面

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摘要

The reflection of a plane‐electromagnetic wave from a rough perfect conductor is investigated. The roughness is represented by hemispherical bosses whose radii and mutual distances are small relative to the wavelength. This problem is solved taking into account the electromagnetic interaction of the bosses. Aside from throwing some light on the limitations of approximate methods, the present solution reveals some effects not known before. For grazing incidence and vertical polarization the interaction has a drastic influence in that it causes a complete phase reversal of the reflected wave, near a 45 degree incidence the influence of the roughness vanishes. These effects do not occur for horizontal polarization. An approximate treatment for the case of the imperfect conductor is indicated. The analogous case for the acoustic wave is also developed and shows similar behavior. The effect of the roughness is shown to be equivalent to a boundary condition for the wave equation. Extension of the method to a more general type of roughness, and to the case of statistical and asymmetric shapes and distributions, is briefly discussed.
机译:研究了平面电磁波从粗糙完美导体的反射。粗糙度用半球形凸起表示,其半径和相互距离相对于波长较小。考虑到凸台的电磁相互作用,可以解决此问题。除了阐明近似方法的局限性之外,本解决方案还揭示了一些以前未知的效果。对于掠入射和垂直极化,相互作用具有极大的影响,因为它引起反射波的完全反相,在接近45度入射时,粗糙度的影响消失了。对于水平极化不会发生这些影响。指出了导体不完善情况的一种近似处理方法。还开发了声波的类似情况,并显示了类似的行为。粗糙度的影响等效于波动方程的边界条件。简要讨论了将该方法扩展到更通用的粗糙度类型以及统计和非对称形状和分布的情况。

著录项

  • 来源
    《Journal of Applied Physics》 |1957年第12期|共9页
  • 作者

    Biot M. A.;

  • 作者单位

    Cornell Aeronautical Laboratory Inc., Buffalo, New York;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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