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PIER PIER B PIER C PIER M PIER Letters
2007-05-24
Reconstruction of 2D PEC Targets Using Limited Scattered Information
By
Jing Wu,

    Dr. Jing Wu

    State Key Laboratory of Millimeter Waves

    Southeast University

    China

    Homepage

Tie-Jun Cui

    Professor Tie-Jun Cui

    Department of Radio Engineering

    Southeast University

    China

    Homepage

Progress In Electromagnetics Research, Vol. 74, 291-307, 2007
doi:10.2528/PIER07042603
Abstract
An efficient method is proposed in this paper to reconstruct the shape of a two-dimensional perfectly electrically conducting (PEC) target using limited scattered information. Based on the physical optics approximation, a Fourier transform relation has been obtained between the PEC target and the scattered fields. In theory, all scattered-field data are required for the reconstruction in the whole angle range (from 0 to 2π) and in the whole frequency range (from 0 to ∞). However, such data are impossible in practical applications. In this paper, we have discussed the influence of limited frequencies and limited incident angles on the imaging, where a Pade interpolation technique has been developed to obtain the scattered information in the whole angle range from limited-angle information. In order to overcome the ill-posed problem in the interpolation, the Tikhonov regularization has been used. Reconstruction examples are given to validate the efficiency of the proposed approach.
Citation
Jing Wu, and Tie-Jun Cui, "Reconstruction of 2D PEC Targets Using Limited Scattered Information," Progress In Electromagnetics Research, Vol. 74, 291-307, 2007.
doi:10.2528/PIER07042603
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