An Accelerated PO for EM Scattering from Electrically Large Targets

被引：2

作者：

Huo, Jincong ^{[1
]}

Xu, Le ^{[1
]}

Shi, Xiaowei ^{[1
]}

Yang, Zhanbiao ^{[1
]}

机构：

[1] Xidian Univ, Dept Elect Engn, Sci & Technol Antenna & Microwave Lab, Xian 710071, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2021年 / 20卷 / 12期

关键词：

Shadow mapping; Life estimation; Three-dimensional displays; Couplings; Time complexity; Electromagnetic scattering; Computational modeling; Electrically large target; physical optics (PO); radar cross section (RCS); shadowing test; RCS;

D O I：

10.1109/LAWP.2021.3108786

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this letter, an accelerated physical optics (PO) method is proposed to improve the calculation speed of electromagnetic (EM) scattering from electrically large targets. One of the most time-consuming parts of PO is the shadowing test of target model. The traditional method shadows the model by determining the occlusion relationship between each two triangular facets. The coupling between facets is strong, and it makes low running speed when using the traditional method. The proposed method accelerates the shadowing test by grouping facets to weaken the coupling between them. It eliminates a large number of redundant operations and significantly improves the efficiency of EM scattering calculation. Several examples are designed to prove the effectiveness of the proposed method.

引用

页码：2300 / 2304

页数：5

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