碳纤维多向铺层板的雷达反射特性

提出一个计算雷达反射电场的传输矩阵方法。把碳纤维多向铺层板相邻层间的分界面两侧的电场用一个简洁的矩阵表示,并将相应的矩阵串接起来,可以方便地处理任意层数和任意纤维取向的反射问题。数值计算结果显示反射率随入射电场的极化变化很小,说明不同铺层互相补偿了各向异性,可使碳纤维部件的场计算问题得到简化。

Radar Reflection Characteristics of Multi-plies Carbon Fiber

This paper presents a transmission matrix method to calculate reflection of fields of multiplies carbon fiber sheet. By formulating the fields on two sides of the interface between adjacent plies with a clear matrix form and connecting the corresponding matrixes in cascade, the reflection of arbitrary number and arbitrary orientation of plies can be treated easily. The numerical results show that the reflectance varies rather slowly with the input electric field polarization and illustrates that the various plies compensate the anisotropic nature of each others when they are assembled. The method shows the possibility of simplifying the field computation problems relevant with carbon fiber parts.