The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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A Study of Accuracy Improvement for Scattering Analysis of FMM Method

FMM 기법의 산란해석 정확도 향상 연구

  • Kim, Young-joo (Agency of Defense Development) ;
  • Cho, Young-Ki (School of Electronics Eng., Kyungpook Nat'l Univ.) ;
  • Son, Hyun (School of Electronics Eng., Kyungpook Nat'l Univ.)
  • 김영주 (국방과학연구소) ;
  • 조영기 (경북대학교 전자전기공학부) ;
  • 손현 (경북대학교 전자전기공학부)
  • Published : 2001.10.01
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Abstract

FMM(Fast Multipole Method) is suitable numerical method for radar cross section calculation of arbitrary large conducting bodies due to reduction of computation time. The accuracy of the numerical results, however, can influenced by selection of grouping method and segment length, in particular, far the case that cross section of the scatter is of the narrow width elliptical type. So, we describe the FMM method which can be deal effectively with such difficulties for both TM and TE polarization case. In order to check the present method the results are compared with those obtained by Method of Moments.

FMM(Fast Multipole Method)은 계산시간을 현저히 감소시킬 수 있기 때문에 대형구조의 레이다 반사면적 (RCS) 계산에 매우 효과적인 수치해석 기법이다. 하지만, 폭이 좁은 타원형 형태의 산란체는 절점의 길이나 그룹의 선택방법이 수치해석 결과에 영향을 미치게 된다. 본 논문에서는 TM 및 TE 편파에 대해 이러한 문제를 효과적으로 처리할 수 있는 방법을 제안하고, 제안한 방법을 검증하기 위하여 MOM 결과와 비교하여 제시하였다.

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References

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