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PIER PIER B PIER C PIER M PIER Letters
2008-02-10
Inverse Scattering of an Un-Uniform Conductivity Scatterer Buried in a Three-Layer Structure
By
Wei Chien

    Dr. Wei Chien

    Electronic Engineering Department

    De Lin Institute of Technology

    Taipei

    Homepage

Progress In Electromagnetics Research, Vol. 82, 1-18, 2008
doi:10.2528/PIER08012902
Abstract
We consider the inverse problem of determining both the shape and the conductivity of an un-uniform conductivity scatterer buriedin a three-layer structure by the genetic algorithm. An ununiform conductivity scatterer of unknown shape and conductivity buriedin the secondla yer scatters the incident wave from the first layer or the thirdla yer. We measure the scatteredfieldin the first andthird layers. Based on the boundary condition and the measured scattered field, a set of nonlinear integral equations is derived and the imaging problem is reformulatedin to an optimization problem. The genetic algorithm is then employedto findout the global extreme solution of the object function. As a result, the shape andthe conductivity of the scatterer can be obtained. Numerical results are given to demonstrate that even in the presence of noise, good reconstruction has been obtained.
Citation
Wei Chien, "Inverse Scattering of an Un-Uniform Conductivity Scatterer Buried in a Three-Layer Structure," Progress In Electromagnetics Research, Vol. 82, 1-18, 2008.
doi:10.2528/PIER08012902
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