电大目标散射问题的预修正多层快速多极子分析

doi:10.3969/j.issn.1001-2400.2012.02.022

J4 ›› 2012, Vol. 39 ›› Issue (2): 133-137.doi: 10.3969/j.issn.1001-2400.2012.02.022

• Original Articles • Previous Articles Next Articles

Analysis of the electrical large scattering problem using the pre-corrected multilevel fast multipole algorithm

MAN Mingyuan¹;LEI Zhenya¹;XIE Yongjun²;WANG Yuanyuan³

(1. Science and Technology on Antenna and Microwave Lab., Xidian Univ., Xi'an 710071， China;
2. Lab. of Electromagnetic Compatibility, Beihang Univ., Beijing 100191， China;
3. Xi'an Electronic Eng. Research Inst., Xi'an 710100， China)

Received:2010-12-30 Online:2012-04-20 Published:2012-05-21
Contact: MAN Mingyuan E-mail:man-ming-yuan@163.com

Abstract

Abstract:

In order to accelerate the solution procedure of scattering problems with the multilevel fast multipole algorithm, a pre-corrected method is presented. Using the Physical Optics method(PO), the PO currents could be obtained as pre-corrected currents. A rather sparse impedance matrix is generated to evaluate the PO surface current. Because the difference between unknown and PO currents is closer to the zero vectors than the unknown currents themselves, it does need less iteration steps using the difference as the unknown vector to get the solution. Numerical results demonstrate that the method could decrease the number of iterations and greatly reduce the time of solution with consistent precision.

Key words: pre-corrected method, multilevel fast multipole algorithm, scattering problem

CLC Number:

TN823

MAN Mingyuan;LEI Zhenya;XIE Yongjun;WANG Yuanyuan. Analysis of the electrical large scattering problem using the pre-corrected multilevel fast multipole algorithm[J].J4, 2012, 39(2): 133-137.

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Analysis of the electrical large scattering problem using the pre-corrected multilevel fast multipole algorithm

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