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Browse Journals & Magazines > Antennas and Propagation, IEE ...> Volume:58 Issue:7 Help

Preconditioning Matrix Interpolation Technique for Fast Analysis of Scattering Over Broad Frequency Band

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4 Author(s)
Fan, Z.H. ; Dept. of Commun. Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China ; Liu, Z.W. ; Ding, D.Z. ; Chen, R.S.

A hybrid interpolation method is proposed for the fast analysis of the radar cross-section (RCS) over a broad frequency band by use of the matrix interpolation method. In order to efficiently compute electromagnetic scattering, the general minimal residual (GMRES) iterative solver is applied to compute the coefficients of Rao-Wilton-Glisson (RWG) basis functions and the sparse approximate inversion (SAI) preconditioning technique is used to accelerate the iterative solver. Moreover, both the near field impedance and SAI preconditioning matrices are interpolated at intermediate frequencies over a relatively large frequency band with rational function interpolation technique. Therefore, a lot of time can be saved for the calculation of both the near field impedance and preconditioning matrices. Numerical results demonstrate that this hybrid method is efficient for wideband RCS calculation with high accuracy.

Published in:
Antennas and Propagation, IEEE Transactions on  (Volume:58 ,  Issue: 7 )

Date of Publication: July 2010

Page(s):
2484 - 2487
ISSN :
0018-926X
INSPEC Accession Number:
11402095
Digital Object Identifier :
10.1109/TAP.2010.2046841
Product Type:
Journals & Magazines
Date of Publication :
29 March 2010
Date of Current Version :
08 July 2010
Issue Date :
July 2010
Sponsored by :
IEEE Antennas and Propagation Society

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