Computation of Radar Cross Section from Arbitrarily Shaped Composite Objects Using Combined Field Integral Equation

결합 적분방정식을 이용한 임의 형태 복합구조의 레이더 단면적 산출

  • 한상호 (호서대 정보통신응용기술학과) ;
  • 정백호 (호서대 전기정보통신공학부) ;
  • 윤희상 (호서대 전기정보통신공학부)
  • Published : 2004.01.01

Abstract

In this paper, we present a new combined field integral equation (CFIE) formulation for the analysis of electromagnetic scattering from arbitrarily shaped three-dimensional perfectly conducting and piecewise homogeneous dielectric composite body. The conducting/dielectric structures are approximated by planar triangular patches, which have the ability to conform to any geometrical surface. The surface covering the conducting body is replaced by an equivalent surface electric current and the surface of the dielectric by equivalent electric and magnetic currents. The all equivalent currents are approximated in terms of RWG (Rao, Wilton, Glisson) functions. The objective of this paper is to illustrate that the CFIE is a valid methodology in removing defects, which occur at a frequency corresponding to an internal resonance of the structure. Numerical results are presented and compared with solutions obtained using other formulations.

Keywords

CFIE;PMCHW;RCS;composite;scattering

References

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