Affiliations: [a] Electrical Engineering Department, Tamkang University,
New Taipei City, Taiwan, China | [b] Department of Computer and Communication Engineering,
Taipei College of Maritime Technology, New Taipei City, Taiwan, China
Correspondence:
[*]
Corresponding author: Chien-Ching Chiu, Electrical Engineering
Department, Tamkang University, New Taipei City, Taiwan, China. E-mail: chiu@ee.tku.edu.tw
Abstract: A time-domain inverse scattering technique for reconstructing a
buried homogeneous cylinder with arbitrary cross section in a slab medium is
proposed. For the forward scattering, the FDTD method is employed to calculate
the scattered E fields. Base on the scattering fields, these
inverse scattering problems are transformed into optimization problems. The
non-uniform steady state genetic algorithm (NU-SSGA) is applied to reconstruct
the location shape and permittivity of the two-dimensional homogeneous
dielectric cylinder. The NU-SSGA is a population-based optimization approach
that aims to minimize the objective function between measurements and
computer-simulated data. 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. In addition, the effects of
Gaussian noises on the image reconstruction are also investigated.
