Total Field and Scattered Field Technique for Fourth-Order Symplectic Finite Difference Time Domain Method
Total Field and Scattered Field Technique for Fourth-Order Symplectic Finite Difference Time Domain Method
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DOI：
10.1088/0256-307x/23/1/030
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发表时间：
2006
影响因子：
3.5
通讯作者：
Sha Wei;Zhixiang Huang;Xianliang Wu;Mingsheng Chen
中科院分区：
文献类型：
--
作者：
Sha Wei;Zhixiang Huang;Xianliang Wu;Mingsheng Chen
利用辛积分传播器，研究了时域和空间域均为四阶的三维四阶辛有限差分时域（SFDTD）方法。该方法是非耗散的，与传统的FDTD方法相比可以节省更多的内存。为SFTDD方法推导了总场和散射场（TF-SF）技术来提供入射波源条件。首次使用SFTDD方法计算介电球的双基地雷达散射截面（RCS）。数值结果表明，与传统的FDTD方法相比，SFTDD算法具有更好的稳定性和准确性。
Using symplectic integrator propagator, a three-dimensional fourth-order symplectic finite difference time domain (SFDTD) method is studied, which is of the fourth order in both the time and space domains. The method is nondissipative and can save more memory compared with the traditional FDTD method. The total field and scattered field (TF-SF) technique is derived for the SFDTD method to provide the incident wave source conditions. The bistatic radar cross section (RCS) of a dielectric sphere is computed by using the SFDTD method for the first time. Numerical results suggest that the SFDTD algorithm acquires better stability and accuracy compared with the traditional FDTD method.