Yang Qian①② Wei Bing*①② Li Lin-qian①② Ge De-biao①②
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)
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.
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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Yang Qian, Wei Bing, Li Lin-qian, Ge De-biao. Preliminary Research on RCS Using DGTD. JOURNAL OF RADARS, 2015, 4(3): 361-366.
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2015, Vol. 4 
