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Study on MPI-Based Parallel Modified Conformal FDTD for 3-D Electrically Large Coated Targets by Using Effective Parameters

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4 Author(s)
Lei, J.Z. ; Xidian Univ., Xi''an ; Chang Hong Liang ; Wei Ding ; Yu Zhang

MPI-based parallel modified conformal finite difference time domain (P-MC-FDTD) method based on effective parameters for solving the scattering of electrically large coated targets is presented in this paper. The thin coating and free-space in a curved cell are replaced by an equivalent medium. The effective permittivity and electric conductivity for electric field samples on the cells are calculated by weighted-length of the medium and the free space. The modified conformal technique is used for magnetic field samples by dealing with stable conformal grids and unstable-prone conformal grids respectively. Combined with the parallel FDTD algorithm, the radar cross section (RCS) of 3-D electrically large coated targets can be calculated accurately.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:7 )