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Computation of double reflection and the diffraction field of plane for UTD
Author(s): 
Pages: 433-437
Year: Issue:  3
Journal: JOURNAL OF XIDIAN UNIVERSITY(NATURAL SCIENCE)

Keyword:  一致性几何绕射理论平板射线追踪二阶射线;
Abstract: 根据惠更斯原理,平板二阶场的求场可以转化为一阶场的迭加,因此射线追踪就是平板二阶场计算的关键.按照镜像法的思想,提出了平板二阶场的射线追踪方法.对于反射-反射,反射-绕射,以及绕射-反射都可以根据源点或场点关于板的镜像点很容易得到解析结果;对于绕射-绕射,采用几何与代数相结合的办法,将二阶场的射线追踪转化为方程组的求解,给出了必要的理论证明以及算例,结果表明该方法精度和速度与数值搜索方法相比都有所提高.
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