Journal Published Online: 06 October 2014
Volume 43, Issue 1

Nondestructive Evaluation of Buried Dielectric Cylinders by Asynchronous Particle Swarm Optimization



This paper presents the study of time domain inverse scattering for a two-dimensional inhomogeneous dielectric cylinder buried in a slab medium via the finite difference time domain (FDTD) method and the asynchronous particle swarm optimization (APSO) method. For the forward scattering part, the FDTD method was employed to calculate the scattered E fields. Base on the scattering fields, these inverse scattering problems were transformed into optimization problems. The APSO method was applied to reconstruct the permittivity of the two-dimensional inhomogeneous dielectric cylinder. In addition, the effects of Gaussian noise on the reconstruction results were investigated. Numerical results show that even when the measured scattered fields were contaminated with Gaussian noise, APSO was able to yield good reconstructed quality.

Author Information

Lee, Wei-Tsong
Electrical Engineering Dept., Tamkang Univ., Tamsui, TW
Sun, Chi-Hsien
Dept. of Electronic and Computer Engineering, National Taiwan Univ. of Science and Technology, Taipei City, TW
Chiu, Chien-Ching
Electrical Engineering Dept., Tamkang Univ., Tamsui, TW
Li, Jyun-Fu
Electrical Engineering Dept., Tamkang Univ., Tamsui, TW
Pages: 9
Price: $25.00
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Stock #: JTE20120323
ISSN: 0090-3973
DOI: 10.1520/JTE20120323