Title :
A study of the error controllability of MLFMA
Author :
Ohnuki, S. ; Weng Cho Chew
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
Abstract :
The Green´s function is factorized by using the addition theorem which is the mathematical core of the multilevel fast multipole algorithm (MLFMA). In the numerical implementation, the errors arise from the truncation of the addition theorem, the process of aggregation and disaggregation, and the approximation of the integration. In this paper, we investigate these errors precisely for an electromagnetic scattering problem and show how to control them by choosing proper parameters in the computational process.
Keywords :
Green´s function methods; electromagnetic wave scattering; error analysis; integral equations; EM scattering problem; Green´s function; MLFMA; addition theorem; aggregation process; disaggregation process; electromagnetic scattering; error controllability; integration approximation; multilevel fast multipole algorithm; numerical errors; numerical implementation; Character generation; Computer errors; Controllability; Dielectric constant; Error correction; Green´s function methods; Interpolation; MLFMA; Sampling methods; Scattering;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2001. IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7070-8
DOI :
10.1109/APS.2001.960212
