Z. W. Yang

Nanjing University of Science and Technology, Nan-ching, Jiangsu, China

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Publications (2)0 Total impact

  • T. Su · Z. W. Yang · M. M. Li · R. S. Chen
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    ABSTRACT: A computational scheme for the analysis of electromagnetic scattering from electrically three-dimensional (3D) perfectly electric conduction (PEC) objects buried in a lossy stratified medium is presented. The method of moments combined with the mixed-potential electric field integral equation (MoM-MPIE) is used. A three level modified discrete complex images methods (DCIM) is introduced to obtain the closed form spatial Green's functions without any quasi-static and surface-wave extraction. The proposed method can approximate the contribution of both the lateral waves and surface waves, and it is more stable and accurate than traditional method for the lossy stratified media. In this paper, electromagnetic scattering from practical models buried in a lossy stratified medium is evaluated, and numerical results demonstrate the accuracy and efficiency of the proposed methodology.
    No preview · Conference Paper · May 2012
  • Z. W. Yang · S. Shang · J. Q. Chen · Z. W. Liu · R. S. Chen
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    ABSTRACT: Recently, a new bistatic point target reference spectrum, which is called extended Loffeld's bistatic formula (ELBF) is proposed. The point target simulation shows that this method can work well in the general bistatic configuration. In this paper, physical optics (PO) method is introduced to calculate the echo data from three dimensional targets for bistatic SAR. Then the original LBF and ELBF are tested for the bistatic SAR imaging by using electromagnetic simulation data. Experiment results demonstrate that compared with the conventional LBF, the ELBF has better imaging quality for azimuth variant configurations.
    No preview · Article · Jan 2010