波束模拟法用于粗糙面散射问题的有效性分析  

Analysis on the Validity of the Beam Simulation Applied to Scattering from a Rough Surface

作　　者：张坤书[1] 薛谦忠[2] 

机构地区：[1]平顶山工学院基础科学教学部,平顶山467001 [2]中国科学院电子学研究所,北京100080

出　　处：《武汉理工大学学报》2005年第7期64-66,69,共4页Journal of Wuhan University of Technology

基　　金：国防科技预研基金(98J3.1.2).

摘　　要：波束模拟方法可用于数值计算宽波束入射,或略入射的粗糙面散射问题,减少所需计算机内存。通过引入能量守恒测度系数和矩量法,以平面理想导体和随机粗糙面为例详细地研究了波束模拟方法在数值计算散射问题时,其计算的精度与入射波束的极化状态、子波束参数和散射面粗糙度之间关系。When the method of the beam simulation is applied to calculate the characteristics of electromagnetic wave scattering from a rough surface illuminated by an incident large beam, the requirement for the memory of a computer is decreased greatly. In this paper, the precision of this method is discussed in detail through energy estimating factor and its comparison with the method of moments. Under the condition that a perfectly conducting plane or a randomly rough surface is illuminated by an incident beam, the dependence of the precision of this method on the incident beam polarized status, the parameters of the subbeam and the roughness of surface is studied.

关 键 词：波束模拟 粗糙面 散射 

分 类 号：O436.2[机械工程—光学工程]