한국군사과학기술학회지 (Journal of the Korea Institute of Military Science and Technology)

  • 제21권6호
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  • Pages.752-759
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  • 2018
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  • 1598-9127(pISSN)
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  • 2636-0640(eISSN)
한국군사과학기술학회 (The Korea Institute of Military Science and Technology)
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광선 그룹화를 이용한 SBR 가속기법

Acceleration of the SBR Technique using Grouping of Rays

  • 이재인 (한국과학기술원 전기 및 전자공학부) ;
  • 윤달재 (한국표준과학연구원 첨단측정장비연구소) ;
  • 양성준 (한국과학기술원 전기 및 전자공학부) ;
  • 양우용 (한화시스템(주) 해상 MFR 팀) ;
  • 배준우 (한화시스템(주) 해상 MFR 팀) ;
  • 김시호 (국방과학연구소 제3기술연구본부) ;
  • 명로훈 (한국과학기술원 전기 및 전자공학부)
  • Lee, Jae-In (School of Electrical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Yun, Dal-Jae (Advanced Instrumentation Institute, Korea Research Institute of Standards and Science) ;
  • Yang, Seong-Jun (School of Electrical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Yang, Woo-Yong (Naval MFR Team, Hanwha Systems) ;
  • Bae, Jun-Woo (Naval MFR Team, Hanwha Systems) ;
  • Kim, Si-Ho (The 3rd Research and Development Institute, Agency for Defense Development) ;
  • Myung, Noh-Hoon (School of Electrical Engineering, Korea Advanced Institute of Science and Technology)
  • 투고 : 2018.07.04
  • 심사 : 2018.10.05
  • 발행 : 2018.12.05
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초록

The SBR technique is one of the asymptotic high frequency method, where a dense grid of rays are launched and traced to analyze the scattering properties of the target. In this paper, we propose an accelerated SBR technique using grouping a central ray and 8 surrounding rays around the center ray. First, launched rays are grouped into groups consisting of a central ray and 8 surrounding rays. After the central ray of each group is preferentially traced, 8 surrounding rays are rapidly traced using the information of ray tracing for the central ray. Simulation result of scattering analysis for CAD models verifies that the proposed method reduces the computational time without decreasing the accuracy.

키워드

GSGGBW_2018_v21n6_752_f0001.png 이미지

Fig. 1. Application of SBR technique to a CAD model

GSGGBW_2018_v21n6_752_f0002.png 이미지

Fig. 2. Dihedral coner reflector CAD model and RCSgraph

GSGGBW_2018_v21n6_752_f0003.png 이미지

Fig. 3. Description of ray launching for 4 triangle patch

GSGGBW_2018_v21n6_752_f0004.png 이미지

Fig. 4. Description of the proposed method

GSGGBW_2018_v21n6_752_f0005.png 이미지

Fig. 5. error caused by using grouping rays

GSGGBW_2018_v21n6_752_f0006.png 이미지

Fig. 6. T-50 CAD model and RCS analysis angles

GSGGBW_2018_v21n6_752_f0007.png 이미지

Fig. 7. RCS(VV-pol) graph for T-50 CAD model

GSGGBW_2018_v21n6_752_f0008.png 이미지

Fig. 8. Stealth bomber CAD model and RCS analysis angles

GSGGBW_2018_v21n6_752_f0009.png 이미지

Fig. 9. RCS(VV-pol) graph for stealth bomber CAD model

참고문헌

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  7. C. Y. Kee and C.-F. Wang, "Efficient GPU Implementation of the High-Frequency SBR-PO Method," IEEE Antennas Wireless Propag. Lett., Vol. 12, pp. 941-944, Jul. 2013. https://doi.org/10.1109/LAWP.2013.2274802
  8. S. H. Suk, T. I. Seo, H. S. Park, and H. T. Kim, “Multiresolution Grid Algorithm in the SBR and its Application to the RCS Calculation,” Microw Opt. Technol. Lett., Vol. 29, No. 6, pp. 394-397, 2001. https://doi.org/10.1002/mop.1188
  9. Cleary, John G., and Feoff Wyvill, "Analysis of an Algorithm for Fast Ray Tracing using Uniform Space Subdivision," The Visual Computer, Vol. 4, Issue 2, pp. 65-84, Mar. 1988. https://doi.org/10.1007/BF01905559
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