Total Field and Scattered Field Technique for Fourth-Order Symplectic Finite Difference Time Domain Method

作     者：沙威 黄志祥 吴先良 陈明生 

作者机构：Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education Anhui University Hefei 230039 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2006年第23卷第1期

页      面：103-105页

核心收录：

学科分类：07[理学] 0809[工学-电子科学与技术（可授工学、理学学位）] 070205[理学-凝聚态物理] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：Supported partially by the National Natural Science Foundation of China under Grant No 6037104 

主　　题：INTEGRATOR SIMULATION STABILITY SCHEME 

摘      要：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.