Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Scattering of arbitrarily large targets above a ground using steepest descent path integration

최대경사 적분법을 이용한 지면위 큰 대형 표적의 산란 특성

  • Lee, Seung-Hak (School of Electrical Engineering and Computer Science Kyungpook National University) ;
  • Kim, Che-Young (School of Electrical Engineering and Computer Science Kyungpook National University) ;
  • Lee, Chang-Won (School of Electrical Engineering and Computer Science Kyungpook National University)
  • 이승학 (慶北大學校 電子電氣컴퓨터學部) ;
  • 김채영 (慶北大學校 電子電氣컴퓨터學部) ;
  • 이창원 (慶北大學校 電子電氣컴퓨터學部)
  • Published : 2002.01.01
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Abstract

This paper derives the electric field integral equation to calculate scattering from arbitrary large target above and radiating of an electric line source within a lossy ground. Sommerfeld’s type integral requires a lot of time to calculate and has some difficulties and limitations for an analysis region. But SDP (steepest descent path) integration gives fast calculation of the integral, and the result shows that SDP integration has the validity for all over the analysis region with fast evaluation. Moment method with SDP integration is used to calculate the scattering of an arbitrary large conducting target and the results are compared with that of the numerical integration with Gaussian quadrature rule and GPOF (generalized pencil of function) method.

본 논문은 손실 매질 내에 매설된 선 전류 안테나에 의한 크기가 큰 완전도체 표적의 산란파를 해석하기 위한 전장적분식을 도출하였다. Sommerfeld 형태의 적분은 어떤 해석영역에 대하여 계산의 어려움과 제약들을 가지고 있으며, 많은 계산시간이 필요하다. 반면 최대 경사적분은 빠른 결과의 산출을 제공하였으며, 또한 그 계산 결과는 모든 해석 영역에 적용 가능하다. 임의의 완전도체 표적의 산란파는 최대경사적분법과 MOM 방법이 사용되었으며, 계산 결과는 가우시안 구적법과 GPOF 방법에 의해 비교되었다.

Keywords

References

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