DF31导弹各向异性材料涂覆RCS缩减优化设计

Optimization Design for RCS Reduction of DF31 Missile with Anisotropic Impedance Surface

在目标表面合理涂覆各向异性吸波材料,能够有效缩减目标的雷达散射截面。文章以DF31导弹为例子,提出了一种适用于复杂几何外形的各向异性吸波材料涂覆目标雷达截面缩减的优化设计方法。该方法由通用几何建模方法、各向异性材料电磁散射高频计算方法、常用遗传算法三部分组成,以各向异性阻抗为优化参量。仿真结果表明,采用各向异性吸波材料涂覆能够显著降低目标的雷达散射截面。

It is effective to reduce radar cross section（RCS） of the object with anisotropic impedance surface.Taking DF31 missile as the studied object,an universal RCS reduction design method of the object with the complicated geometric and anisotropic impedance surface is proposed in this paper.The method includes 3 parts： universal geometry modeling,high-frequency method of the electromagnetic scattering by the anisotropic material and standard genetic algorithm（GA）.The anisotropic impedance is considered as the optimize parameters at the same time.The simulation results demonstrate that the RCS of the object with the anisotropic impedance surface can be reduced evidently.