多向定向铁纤维吸波材料的雷达反射特性研究

Radar reflection characteristics analysis of multi-orientation iron fiber absorbing materials

基于电磁场理论用传输矩阵方法数值计算具有金属基底多向定向铁纤维吸波材料的雷达反射特性。结果表明具有强各向异性的单定向铁纤维材料 ,通过多向定向铺层在铺层层数不是很小时 (通常大于 1 0层 )该吸波材料表面的反射场近似各向同性特性 ;指出它的反射特性可用反射系数平行分量 (R/ / ) 0 表征 ;通过等效电磁参数的计算和实验验证了数值分析的正确性。

The radar reflection characteristics of multi-orientation iron-fiber absorbing materials were analyzed by using the transmission matrix method. The numerical results show that when the single-oriented iron-fiber with strong anisotropic characteristics is bonded into a multiple-layer structure, the reflection characteristics of the multiple-layer absorbing materials is approximately isotropic, as long as the number of layers is thick (usually greater than 10). Also, the surface reflection behavior of the absorption materials can be represented by a parallel component of reflection coefficients. The results were further confirmed with the equivalent EM parameters and measured data.