导体目标涂覆等离子体层的吸收特性研究

在一维简化模型的情况下，采用W.K.B近似方法，对导体目标涂覆非均匀等离子体层的吸收特性进行了研究，计算结果表明，微波通过非均匀等离子体的吸收特性与等离子体密度和等离子体碰撞频率密切相关，合适选择等离子体密度变化的参数对于减少低频端的反射是有益的，而在中频段高碰撞频率会大大增加反射，但吸收带随着碰撞频率的增加而展宽。因此，等离子体用于飞机隐身可能更具有优越性。

Absorption characteristics of conductive targets coated with plasma

Based on one dimensional simplified model, the microwave absorption characteristics of conductive targets coated with non uniform plasma are studied computationally by using W.K.B approximate method. The results show that such absorption characteristics are closely related with plasma density distribution and collision frequency. It will be favorable to reducing reflection for lower microwave frequencies if appropriate parameters of density variation are chosen, and the high collision frequency will cause greater reflection for medium microwave frequency band. At the same time the absorption bandwith is broadened along with the increase of collision frequency. So the plasma coating technology applied to aircraft stealth may have an advantage over conventional stealth technolog.