Kd-tree Based Shooting and Bouncing Ray Method for Fast Computation of Near Field Scattering
In this paper, we propose an efficient kd-tree based shooting and bouncing ray (SBR) method for solving near field scattering problems. The kd-tree is highly effective in handling the irregularly distribution of triangles of the target. It is utilized to accelerate the ray tube tracing in the SBR, especially for electrically large and complex targets. The SBR is based on the combination of the geometrical optics (GO) and the physical optics (PO). The far field assumption results in the decrease of the accuracy of the standard PO in the near field observation. By applying the locally expanded phase approximations together with surface partitioning, the refined PO can extend the region of validity of the SBR to near field scattering. Numerical examples demonstrate that the proposed method can efficiently handle the near field scattering problems of realistic complex targets with high accuracy.
P.C.Gao Z.C.Liang W.Gao
Science and Technology on Electromagnetic Scattering Laboratory, China
国际会议
Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)
广州
英文
1304-1308
2014-08-01（万方平台首次上网日期，不代表论文的发表时间）