摘要
针对非均匀等离子体在飞行器隐身中的应用,采用分段线性电流密度递归卷积时域有限差分(PLJERC-FDTD)方法计算等离子体涡及涡串电磁散射特性,分析等离子体涡对飞行器隐身性能影响。计算表明,等离子体涡在很大频率区间对电磁波吸收效果显著,RCS降低很大,具有明显的隐身效果。等离子体涡表现出一定规律性的极化特性,对L,S和C波段电磁波具有不同的吸收、反射特性。
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. The RCS vs. polarization angle and the characteristics which electromagnetic waves are absorbed and reflected for L, S and C band follow some laws.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2008年第2期304-308,共5页
Acta Aeronautica et Astronautica Sinica
