摘要
应用物理光学法 (PO)对天线—罩系统的散射特性进行分析。通过对罩壁的局部平板等效 ,导出了天线表面的感应电流和罩表面的等效电、磁流分布的计算公式。以口径天线—多层介质结构雷达罩为例 ,计算了天线、雷达罩及天线—罩系统的单、双站雷达散射截面 (RCS) 。
It uses the physical optics method(PO) to analyze the electronmagnetic scattering from electric large size antenna radome systems. Under assumptions of locally planar radome surface and locally plane wave characteristic of waves scatter from antennas, formulations of equivalent electric and magnetic currents on radome surface and the induced current on antenna surface are presented. Both monostatic and bistatic radar cross section(RCS) of a aperture anternna, a multilayered radome and the antenna radome system are calculated. Frequency response of the monostatic RCS and the effect of antenna inclination on RCS are also discussed. Numerical examples show efficiency of the PO method and significant effects of radomes on the scattering of antennas.
出处
《计算物理》
CSCD
北大核心
2000年第6期619-624,共6页
Chinese Journal of Computational Physics
基金
航空基础科学基金资助课题!(98F53065)
