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Preliminary Research on RCS Using DGTD
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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.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.
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[1] Ji X, Lu T, Cai W, et al.. Discontinuous Galerkin Time Domain (DGTD) methods for the study of 2-D waveguidecoupled microring resonators[J]. Journal of Lightwave Technology, 2005, 23(11): 3864-3874. [2] Shu C W. A brief survey on discontinuous Galerkin methods in computational fluid dynamics[J]. Advances in Mechanics, 2013, 43(6): 541-553. [3] Gedney S D, Kramer T, Luo C, et al.. The Discontinuous Galerkin Finite Element Time Domainmethod(DGFETD)[C]. IEEE International Symposium on Electromagnetic Compatibility, 2008: 1-4. [4] Alvarez J. A Discontinuous Galerkin Finite Element Method for the Time-Domain Solution of Maxwell Equations[D]. [Ph.D. dissertation], University of Granada (Spain), 2013: 31-39. [5] Lee Jin-Fa, Lee Robert, and Cangellaris Andreas. Timedomain finite-element methods[J]. IEEE Transactions on Antennas and Propagation, 1997, 45(3): 430-442. [6] Jin Jian-ming.The Finite Element Method in Electromagnetic[M]. New York: John Wiley Sons, 2002: 22-23. [7] Riley D J, Jin Jian-ming, Lou Z, et al.. Total-and scatteredfield decomposition technique for the finite-element timedomain method[J]. IEEE Transactions on Antennas and Propagation, 2006, 54(1): 35-41. [8] Shankar V, Mohammadian A H, and Hall W F. A timedomain, finite-volume treatment for the Maxwell equations[J]. Electromagnetics, 1990, 10(1/2): 127-145. [9] Bossavit A. Whitney forms: a class of finite elements for three-dimensional computations in electromagnetism[J]. IEE Proceedings A (Physical Science, Measurement and Instrumentation, Management and Education, Reviews), 1988, 135(8): 493-500. [10] 葛德彪, 魏兵. 电磁波时域计算方法(下册)[M]. 西安电子科技 大学出版社, 2014: 188-191. Ge D B and Wei B. Time Domain Computational Method for Electromagnetic Wave (Volume II)[M]. Xi'an: Xidian University Press, 2014: 188-191. 期刊类型引用(10)
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