等离子体隐身的极化损耗机理

Polarization Loss Mechanism of Plasma Stealth Technique

通过等离子体对电磁波的折射效应和吸收衰减实现隐身是等离子体隐身技术的基本机理,但同时,磁化等离子体还可以通过改变电磁波的极化方式造成雷达波的极化损耗。文中研究了极化雷达波在磁化等离子体中传播时的法拉第旋转、双折射等现象,分析了这些效应使雷达波产生极化损耗的机理。结果表明磁化等离子体对雷达波的极化损耗在理论上是完全成立的,其效果也相当显著。

The basic mechanism of plasma stealth technique are refraction and absorption of EM wave; but magnetized plasma can also change the polarization and make polarization loss. This paper studies some phenomena accured when wave propagates in magnetized plasma such as Faraday-rotation, Dual-refraction, and analyzes the effect of plasma stealth technique on polarization loss. The results show that magnetized plasma can cause polarization loss of radar wave does exise in theory and the loss is significant.