【摘要】 现代军用无人机外形隐身设计时对整机雷达散射截面(RCS)的快速预估分析是一项重要的研究课题。无人机作为一种电大尺寸的目标模型体,采用电磁场的高频计算方法,对于机体面目标散射场贡献采用物理光学算法(PO),对于由面元结合部所形成的棱边绕射场贡献采用改进的等效电磁流(IMEC)算法分析,散射总场由两部分共同叠加计算生成。利用PO+IMEC算法完成了对一种无人机目标模型RCS的模拟计算,将模拟结果与暗室实测结果对比获得了较为满意的结果。更多还原

【Abstract】 The fast future analyzing method of Radar cross section(RCS) for military unmanned aerial vehicles(UAV) stealth design is an important research subject.As the electrical large size target,Physical optics calculation(PO) was used to compute the scattering contribution of the surface targets and the improved method of equivalent currents(IMEC) was used to compute the wedge scattering contribution of targets edge which were consisted of the surface link.The total scattering was computed by the addition these contribution.According to the PO+MEC algorithm,a model RCS of UAV was simulated.The RCS computation result was compared with the testing results and the satisfied result was obtained.更多还原