DGTD用于RCS计算的初步研究

杨谦; 魏兵; 李林茜; 葛德彪

doi:10.12000/JR15052

DGTD用于RCS计算的初步研究

doi: 10.12000/JR15052

1.
(西安电子科技大学物理与光电工程学院西安 710071)
2.
(西安电子科技大学信息感知技术协同创新中心西安 710071)

基金项目:

国家自然科学基金项目(61231003, 61401344)资助课题

详细信息

作者简介:
杨谦(1989-),男,博士研究生,主要研究方向为计算电磁学.E-mail:zijiangy@126.com魏兵(1970-),男,教授,博士,主要研究方向为电磁理论、复杂系统中的场与波和计算电磁学等.E-mail:bwei@xidian.edu.cn李林茜(1985-),男,博士研究生,主要研究方向为计算电磁学.E-mail:395106835@qq.com

通讯作者:
魏兵bwei@xidian.edu.cn

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出版历程
- 收稿日期: 2015-05-05
- 修回日期: 2015-06-16
- 网络出版日期: 2015-06-28

Preliminary Research on RCS Using DGTD

1.
(School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China)
2.
(Collaborative Innovation Center of Information Sensing and Understanding, Xidian University, Xi'an 710071, China)

摘要

摘要: 时域离散伽辽金法(Discontinuous Galerkin Time Domain, DGTD)同时具有时域有限元算法(FiniteElement Time Domain, FETD)非结构网格剖分和时域有限差分算法(Finite Difference Time Domain, FDTD)显式迭代的优点,是一种非常有前途的电磁计算方法,该文首先描述了基于矢量基函数的时域离散伽辽金法的基本原理.然后,给出了DGTD处理散射问题时平面波入射加入的具体实现方法.最后,给出了金属球、介质球和金属弹头宽带散射的算例,算例结果的比较表明了该文算法的正确性和有效性.该文的研究,为复杂目标雷达散射截面RCS的准确预估打下了坚实的基础.
- 时域离散伽辽金方法 /
- 时域有限差分 /
- 有限元 /
- 雷达散射截面
Abstract: Discontinuous Galerkin Time Domain (DGTD) method appears to be very promising which combines the advantages of unstructured mesh in Finite Element Time Domain (FETD) and explicit scheme in Finite Difference Time Domain (FDTD). This paper first describes principle of DGTD base on vector basis function. Secondly, Specific method for incident plane wave is given for scattering problem. At last, the monostatic Radar Cross Section (RCS) of PEC sphere, medium sphere and the PEC bullet are computed by DGTD method. The numerical results illustrate the feasibility and correctness of the presented scheme. The study of this paper is a foundation for analyzing the RCS of complex target.
- Discontinuous Galerkin Time Domain (DGTD) /
- Finite Difference Time Domain (FDTD) /
- Finite Element Method (FEM) /
- Radar Cross Section (RCS)

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参考文献(10)

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