关键词: 时域有限差分, 电磁波, 等离子体, 涡, 雷达散射截面, 隐身

Abstract:

Aiming at the non-uniform plasma application in aircraft stealth, a piecewise linear current density recursive convolution finitedifferent time-domain (PLJERC-FDTD) algorithm is applied to the study on the scattering for the plasma vortex and plasma vortex cluster. The effects of plasma vortex on the aircraft stealth are analyzed. The results illustrate that the plasma vortex can absorb electromagnetic waves obviously, and the smaller radar cross section (RCS) is obtained comparing with RCS without plasma vortex. The stealth performance of vortex is remarkable.

Key words: FDTD, electromagnetic , wave,  , plasma, vortex, RCS, stealth