Research and Application of High Order FDTD Algorithm

Compared with traditional FDTD algorithm, higher-order FDTD algorithm has more advantages in computational accuracy and numerical dispersion characteristics. The high-order FDTD algorithm proposed in this paper uses central difference in time domain and fourth-order central difference in space domain to improve the traditional FDTD algorithm. Several examples are used to verify the correctness of the high-order FDTD algorithm.