吸收散射型伪装遮障微波散射特性研究

Research on the Microwave Scattering Characteristic of the Camouflage Screen

借助有耗介质板模型研究了伪装遮障材料电磁参数对材料散射、透射和吸收性能的影响,初步得出了材料电磁参数可能选择的范围。采用周期结构模型和Split-Field Periodic FDTD法(基于分裂场的周期结构时域有限差分法)研究了吸收散射型伪装遮障微波散射特性,通过数值计算分析了网孔尺寸、材料电磁参数、入射波频率以及入射角度等因素对伪装遮障电磁散射特性的影响,得出了一些有参考价值的结论。

A lossy dielectric model is proposed to study the microwave scattering characteristic of the new scattering and absorptive camouflage screen.The selecting domain of material electromagnetic parameters are obtained.The plane periodic model and the Split-Field Periodic FDTD method are applied to study the effect of mesh dimension、material electromagnetic parameters、incident frequency and incident angle on the scattering of the camouflage screen.Some useful conclusions are drawn through the computation.