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Numerical calculation of scattering from a conducting sphere by using Greengard-Rokhlin's fast multipole algorithm

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2 Author(s)
Nakashima, N. ; Dept. of Comput. Sci. & Commun. Eng., Kyushu Univ., Fukuoka, Japan ; Tateiba, M.

Fast multipole algorithms (FMAs) are used in the numerical calculation of EM wave scattering as the acceleration technique. Previously, we applied Greengard-Rokhlin's FMA (GRFMA) (Greengard, L. and Rokhlin, V., J. Comput. Phys., vol.73. p.325-48, 1987) to the numerical calculation of two-dimensional scattering and reduced the order of floating-point operations and the amount of used memory for the matrix-vector product to O(L), where L is the size of the matrix (Nakashima, N. and Tateiba, M., Proc. IEEE AP-S. vol.2. p.606-9, 2002; Proc. IEICE ISAP-i02, p.193-6, 2002). We now apply GRFMA to the numerical calculation of scattering from a conducting sphere as a simple example of three-dimensional scattering, and estimate the orders of both the computation time and used memory.

Published in:

Antennas and Propagation Society International Symposium, 2003. IEEE  (Volume:1 )

Date of Conference:

22-27 June 2003