An Accelerated SBR for EM Scattering From the Electrically Large Complex Objects
An Accelerated SBR for EM Scattering From the Electrically Large Complex Objects
复制标题
用于大型复杂物体电磁散射的加速 SBR
DOI：
10.1109/lawp.2018.2873119
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发表时间：
2018-12-01
影响因子：
4.2
通讯作者：
Wang, Yao
中科院分区：
文献类型：
--
作者：
Dong, Chun-Lei;Guo, Li-Xin;Wang, Yao
为了提高电大尺寸复杂目标电磁散射的计算效率，提出了一种加速射线打靶法（SBR）。最初，一个开放的图形库被用来加速阴影面的去除。与传统的基于八叉树遍历的SBR算法不同，采用邻域搜索技术来加速光线跟踪过程。通过与FEKO多层快速多极子方法的仿真结果比较，验证了该方法的有效性。并对两个电大尺寸复杂舰船模型的电磁散射进行了分析，得到了理想的加速比。因此，加速SBR法在电大尺寸复杂目标的散射分析中具有上级性能，特别是在高频下。
In this study, an accelerated shooting and bouncing ray (SBR) method was proposed to improve the computational efficiency of electromagnetic (EM) scattering from the electrically large complex objects. Initially, an open graphics library was employed to speed up the shadow faces removal. Then, the neighbor search technique was utilized to accelerate the ray tracing process, which was different from traditional SBR based on the traversal algorithms of Octree. The validation of the proposed method was verified by comparing the simulation results with those of the FEKO multilevel fast multipole method. Moreover, the EM scattering from two electrically large complex ship models was analyzed, and a desirable acceleration ratio was achieved. Therefore, the accelerated SBR method yields a superior performance for scattering analysis of electrically large complex targets, especially at high frequency.