Parallel Finite-Difference Time-Domain Computations Aided by Modal Decomposition. Dmitry A. Gorodetsky Philip A. Wilsey. Outline. Introduction FDTD Distributed Computation Model Order Reduction Conclusion References. Introduction.
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Dmitry A. Gorodetsky
Philip A. Wilsey
Computed surface electric currents induced on a prototype military jet fighter plane by a radar beam at 100 MHz. The incident plane wave propagates from left to right head-on to the airplane. The surface currents re-emit electromagnetic energy which can be used to create RCS plots .
A single FDTD cell
Figure 1. Speedup Efficiency of parallel FDTD  Modal DecompositionDistributed Computation
E(n) = D1H(n-1/2) + G1E(n-1)
H(n+1/2) = D2E(n) + G2H(n-1/2)
where Q represents the present state.
where vi are the eigenvectors and λiare eigenvalues of A.
Alternatives: Iterative Techniques Simultaneous Iteration
Arnoldi and Lancsoz [12,13]