| Method of Analyzing the ISAR image of Electrically Large Objects Partially Coated with RAM Using PO Technique |
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Yeong-Hoon Noh1, Woobin Kim1, Jong-Gwan Yook1, Ic-Pyo Hong2, Yoon-Jae Kim3, Wonseok Oh3 |
1Department of Electric and Electronic Engineering, Yonsei University, Korea
2Department of Information and Communication Engineering, Kongju National University, Korea
3Aerospace Technology Research Institute, Agency for Defense Development, Korea |
| PO 기법을 이용한 부분 코팅된 전기적 대형물체의 ISAR 해석 방법 |
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노영훈1, 김우빈1, 육종관1, 홍익표2, 김윤재3, 오원석3 |
1연세대학교 전기전자공학과
2공주대학교 정보통신공학부
3국방과학연구소 항공기술연구원 |
Correspondence:
Jong-Gwan Yook,
Email: jgyook@yonsei.ac.kr
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Received: 17 April 2020; Revised: 4 June 2020; Accepted: 26 June 2020; |
| Abstract |
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This paper presents an asymptotic analysis method using the PO(physical optics) approximation technique to analyze the scattering contribution of an electrically large object partially coated with a radar absorbing material(RAM). By using the feature of the PO technique that can calculate the equivalent current value for each mesh independently, instead of analyzing the entire structure, scattering analysis was performed only by calculating the current on the area where the RAM coating is applied. By the numerical examples, the accuracy and the computation time of the proposed method were verified, and the computational efficiency of inverse synthetic aperture radar(ISAR) of the electrically large objects that require enormous resources is improved. |
| Key Words:
RAM, ISAR, RCS, PO, Electromagnetic Scattering, Stealth Technologies |
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