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.
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]