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Volume 39 Issue 5
May  2013
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Journal of Beijing University of Aeronautics and Astronautics  > 2013  >  39(5): 660-664.
Ji Jinzu, Ma Yunpeng, Huang Peilin, et al. Error analysis of surface current density on perfect electric conductor based on physical optics[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(5): 660-664. (in Chinese)
Citation: Ji Jinzu, Ma Yunpeng, Huang Peilin, et al. Error analysis of surface current density on perfect electric conductor based on physical optics[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(5): 660-664. (in Chinese)
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Error analysis of surface current density on perfect electric conductor based on physical optics

  • School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 27 May 2012
  • Rev Recd Date: 26 Nov 2012
  • Publish Date: 31 May 2013
    Abstract
  • In radar cross section (RCS) calculation of perfect electric conductor (PEC) targets using physical optics (PO), the surface current was calculated based on the assumption of infinite tangent plane. The assumption was fulfilled only for the electric-big and smooth-surface targets, while there is error induced by PO in general situation. The PO's surface current of two-dimensional profiles such as cylinder, square prism and triangular prism was calculated and compared with accurate or method of moments (MoM) result. The analysis shows that when transverse magnetic (TM) wave is incident on the target, PO reflects the true situation except for some vertices. However, when transverse electric (TE) wave is incident on the target, PO cannot show the resonant oscillation in illuminated and shadowed surfaces and there are still big errors in the surface current parallel to the incident direction.

     

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