CAJ | 학술논문

基于几何光学法（GO）、物理光学法（PO）、射线弹跳法（SBR）和等效电流法（MEC），提出了一种快速计算金属海面上电大尺寸目标电磁散射的解析算法。该算法考虑了阴影效应，运用GO/PO+SBR计算了目标与海面的镜面反射以及它们之间的多次相互作用，并运用MEC计算了目标的棱边绕射以改进计算结果。应用该算法计算了平板上方规则金属目标的双站雷达散射截面（ RCS ），并与传统矩量法（ MoM ）进行比较，验证了算法的有效性。最后，计算了 PM （Pierson-Moskowitz）海浪谱的随机海洋粗糙面上舰船模型目标的散射特性，并对计算结果进行了分析，讨论了海洋面以及入射波参数对散射结果的影响。
기우궤하광학법（GO）、물리광학법（PO）、사선탄도법（SBR）화등효전류법（MEC），제출료일충쾌속계산금속해면상전대척촌목표전자산사적해석산법。해산법고필료음영효응，운용GO/PO+SBR계산료목표여해면적경면반사이급타문지간적다차상호작용，병운용MEC계산료목표적릉변요사이개진계산결과。응용해산법계산료평판상방규칙금속목표적쌍참뢰체산사절면（ RCS ），병여전통구량법（ MoM ）진행비교，험증료산법적유효성。최후，계산료 PM （Pierson-Moskowitz）해랑보적수궤해양조조면상함선모형목표적산사특성，병대계산결과진행료분석，토론료해양면이급입사파삼수대산사결과적영향。
A new method is proposed to rapid compute the electromagnetic scattering from the large object on ocean surface. This method combines the Geometric Optic (GO), the Physic Optic (PO), the Shooting and Bouncing Ray (SBR) and the Method of Equivalent Currents (MEC). The interaction between object and ocean surface is computed by using GO/PO+SBR, and the result is improved by MEC which takes into account the edges diffraction. The shadowing effect is also included. The radar cross section (RCS) of regular metal object located on ocean surface is computed by using this method. The validity of this method is proved by comparing with the traditional method of moment (MoM). Finally, a aircraft carrier object located on random ocean rough surface with PM(Pierson-Moskowitz)spectrum is computed, The result is analyzed, and the influence on scattering characteristic caused by parameters of ocean surface and incidence wave is discussed.