摘要
为了减小反射红外、透射毫米波的介质对红外/毫米波共口径目标模拟器的电场相位分布的影响,提高毫米波信号与红外信号的指向一致性,将几何光学法(GO)和遗传算法(GA)相结合,对红外/毫米波共口径目标模拟器中的反射红外并且透射毫米电磁波的介质表面形状进行优化,且得出了函数表达式.利用电磁仿真软件对优化后的目标模拟器指定距离处电场幅度和相位的分布进行仿真.仿真结果表明:优化后的共口径目标模拟器电磁波相位分布变化很小,毫米波信号与红外信号指向具有良好的一致性.
In order to reduce the dielectric effects, mainly induced by the reflection of infrared signals and the transmission of electromagnetic waves, on the electric field phases of the infrared/millimeter-wave co-aperture object simulator and improve the direction uniformity of infrared and millimeter-wave signals, the geometrical optics （GO） method was combined with the genetic algorithm to obtain the shape functions for generating the dielectric surfaces The amplitude and phase distributions of the electric fields at the specific distance from the optimized co-aperture object simulator were computed by using the commercial EM software. The numerical results illustrate that the phase variation of the electric ~elds of the co-aperture object simulator is very small after optimization, and good direction consistency of infrared and millimeter-wave signals is also observed.
出处
《红外与毫米波学报》
SCIE
EI
CAS
CSCD
北大核心
2009年第5期350-352,366,共4页
Journal of Infrared and Millimeter Waves
基金
国家部委预研项目(BQ0185)
关键词
红外/毫米波
目标模拟器
几何光学法
共口径
infrared/millimeter wave
object simulator
geometrical optics（GO） approach
co-aperture
