Geometrical optics terms calculated by a PO-MER line integration methodology
Geometrical optics terms calculated by a PO-MER line integration methodology
复制标题
通过 PO-MER 线积分方法计算的几何光学项
DOI：
10.1109/aps.2005.1552458
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
M. Ando
中科院分区：
文献类型：
--
作者：
L. Rodriguez;K. Yukimasa;J. Goto;T. Shijo;M. Ando
本文的目的是从数值的角度开始讨论物理光学（PO）表面积分和修正边缘表示（MER）线积分之间的直接等价性。当散射场由衍射场和GO贡献组成时，MER线积分的实体不明确，PO表面到MER线积分之间的等价性尚未得到证实。在本文中，数值证明了围绕稳定相位点（SPP）（源与观察者之间的光线路径的反射或交点）的 MER 线积分给出了几何光学项。 GO术语被理解为反射区域中的反射波或阴影区域中的直接入射波（带负号）。得出的一般且重要的结果是：PO 表面积分通过 MER 线积分分解为 GO 和衍射项。
The purpose of this paper is to open the discussion, from the numerical point of view, on the direct equivalence between the physical optics (PO) surface integral and the modified edge representation (MER) line integrals. When the scattered field is composed by the diffracted field and the GO contributions the entity of MER line integration is not clear and the equivalence between the PO surface-to-MER line-integration has not been confirmed. In this paper, it is numerically demonstrated that MER line integration around the stationary phase point (SPP), which is the reflection or the intersection of the ray path between the source and the observer, gives the geometrical optics terms. The GO terms are understood as the reflected wave in the reflection region or the direct incident wave (with negative sign) in the shadow region. The general and important results derived are: the PO surface integral is decomposed into the GO and the diffraction terms via the MER line integrals.