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

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

다중 수중 표적 환경에 강인한 OSR CFAR 알고리듬

OSR CFAR Robust to Multiple Underwater Target Environments

  • Hong, Seong-Won (School of Electronics Engineering, Kyungpook National University) ;
  • Han, Dong-Seog (School of Electronics Engineering, Kyungpook National University)
  • 투고 : 2010.12.19
  • 심사 : 2011.04.15
  • 발행 : 2011.04.25
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초록

CFAR(constant false alarm rate)는 능동 소나 시스템에서 사용되는 자동 탐지 신호처리 알고리듬이다. CFAR 알고리듬 중에서도 OS(ordered statistics) CFAR는 CA(cell averaging), SO(smallest of), GO(greatest of)에 비해 비균일 환경에서 탐지 성능이 우수하다. 그러나 OS CFAR는 다중 표적 상황에서 일정 개수 이상의 표적이 나타나면 탐지 성능이 나빠지는 단점을 갖고 있다. 이에 본 논문에서는 다중 표적 환경에서 OS CFAR보다 좀 더 강인한 OSR(ordered statistics ratio) CFAR 알고리듬을 제안하고 컴퓨터 모의실험을 통하여 간섭 표적 개수에 따른 성능을 기존의 CFAR 기법과 비교 분석하였다.

Constant false alarm rate (CFAR) is an automatic detection algorithm for active sonar system. Among several CFAR algorithms, ordered statistics (OS) CFAR has the best performance over cell averaging (CA), smallest of (SO), greatest of (GO) algorithms at non-homogeneous environments. However, OS CFAR has the disadvantage of bad detection performance in multiple target conditions. We suggest an ordered statistics ratio (OSR) CFAR algorithm that is robust to multiple target environments. The proposed and conventional schemes are compared with computer simulations.

키워드

참고문헌

  1. B. Kalyan and A. Balasuriya, "Sonar based automatic target detection scheme for underwater environments using CFAR techniques: a comparative study" 2004 International Symposium on Underwater Technology, pp. 33-37, Taipei, 2004.
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  4. M. Weiss, "Analysis of Some Modified Cell-Averaging CFAR Processors in Multiple-Target Situations", IEEE Transactions on Aerospace and Electronic Systems, vol. AES-18, No. 1, pp. 102-114, Jan. 1982. https://doi.org/10.1109/TAES.1982.309210
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