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Proceedings of 2010 Cross-Strait Conference on Information Science and Technology (CSCIST 2010 E-BOOK)

Qinhuangdao,China,7.9-7.13，2010

ISBN: 978-1-935068-15-0 Scientific Research Publishing, USA

E-Book 840pp Pub. Date: July 2010

Category: Computer Science & Communications

Price: $120

Title: Time domain inverse problem of 2-D dielectric cylinders by asynchronous particle swarm optimization
Source: Proceedings of 2010 Cross-Strait Conference on Information Science and Technology (CSCIST 2010 E-BOOK) (pp 13-15)
Author(s): Chien-Hung Chen, Department of Computer and Communication Engineering, Taipei College of Maritime Technology, Danshui Town, Taipei County
Chi-Hsien Sun, Electrical Engineering Department, Tamkang University, Tamsui
Chien-Ching Chiu, Electrical Engineering Department, Tamkang University, Tamsui
Xiaodong Zhang, Department of Electrical Engineering, Beijing Jiaotong University, Beijing
Chaoqun Jiao, Department of Electrical Engineering, Beijing Jiaotong University, Beijing
Abstract: In this paper, inverse scattering technique for reconstructing the electromagnetic properties of a homogeneous dielectric cylinder is based on the finite difference time domain (FDTD) method and the asynchronous particle swarm optimization (APSO). The homogeneous dielectric cylinder with unknown electromagnetic properties is illuminated by transverse magnetic pulse and the scattered field is recorded outside. By minimizing the discrepancy between the measured and estimated scattered field data, the location, shape and permittivity of the dielectric cylinder are reconstructed. The inverse problem is resolved by an optimization approach, and the global searching scheme APSO is then employed to search the parameter space. A set of representative numerical results is presented for demonstrating that the proposed approach is able to efficiently reconstruct the electromagnetic properties of homogeneous dielectric scatterer even when the initial guess is far away from the exact one.
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