有界随机媒质的边界效应

The Interface Effect of Bounded Random Media

本文运用强扰动波动理论推导了半空间强扰动随机媒质中平均电磁波所满足的方程,且在小尺度扰动下,给出了媒质的等效介电常数。分析和计算结果表明:在媒质分界面处存在一过渡层,在该过渡层中,分界面对媒质的等效介电常数有较大影响,在计算电磁波在有界随机媒质边界处的反射和折射时必须加以考虑。

The equation governing the mean field is derived for the half-space strong fluctuation random media by the strong fluctuation wave theory and the effective permittivity is given under the small scale fluctuation. approximation. It is shown that the effective permittivity is heavily influenced by the interface effect within a transition layer beneath the interface. This effect must be taken into account in calculation of the electromagnetic wave reflection and deflection at the media interface.