摘要
本文根据等效电磁流方法的概念，导出了求解物理光学场、边缘绕射场和总场的等效电磁流的一般表达式，它们可退化到目前已存在的各种等效电磁流公式；并提出了一种最佳的计算物理光学场的等效电磁流公式．根据半平面非均匀性电流的精确表达式，导出了一阶、二阶和三阶等效边缘电磁流的表达式．最后用本文导出的公式计算了菱形板的双站散射截面，计算结果和实验结果吻合良好。
Generalized expressions of equivalent edge crrrents for physical optics,fringe diffraction and total fields are derived eccording to the concept of the method of equivalent edge currents,and they can be re duced to those exprossions published.An optimum expression of equivalent edge currents for PO field is ob tained.The first,second and third order equivalent edge currents are derived based on the exact expression of non-uniform currents for a half-plane.Bistatic RCS of rhombic flat plat are calculated by the method presented in the paper,which is in good agreement with experimental results.
出处
《电子学报》
EI
CAS
CSCD
北大核心
1998年第3期43-47,61,共6页
Acta Electronica Sinica
基金
国防科技预研基金
关键词
等效电磁流方法
双站散射截面
雷达系统
双站
The method of equivalent currents,Expression of equivalent edge currents,Bistatic RCS,Polygonal plates
