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

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Real-time Target Localization Method Integrating Multi-Beam Tracing and Acoustic Refraction Correction

다중 빔 추적과 음향 굴절 보정을 결합한 실시간 표적 위치 추정 기법

  • 정동환 ( LIG넥스원(주) 해양연구소) ;
  • 김상윤 ( LIG넥스원(주) 해양연구소) ;
  • 이정훈 ( LIG넥스원(주) 해양연구소) ;
  • 곽승규 ( LIG넥스원(주) 해양연구소) ;
  • 이재준 ( LIG넥스원(주) 해양연구소) ;
  • 신기철 ( LIG넥스원(주) 해양연구소)
  • Received : 2025.04.11
  • Accepted : 2025.07.08
  • Published : 2025.08.05
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Abstract

This study proposes a real-time target localization method based on acoustic refraction correction to enhance the accuracy of mine avoidance sonar systems for safe submarine operations. Conventional mine avoidance sonars typically assume either straight-line or single eigen-ray propagation paths for estimating target locations, which can result in detection errors due to insufficient consideration of acoustic refraction effects in complex and varying oceanic sound speed profiles. To address these limitations, this paper introduces a real-time sonar imaging method employing multi-ray tracing based on transmission angles and detailed sound speed profiles, effectively correcting mismatches in target localization. Performance validation through simulations and ocean experiments involving variable depths and complex sound speed environments demonstrated significantly improved localization accuracy compared to traditional approaches, confirming the capability for accurate real-time target localization in multi-target and complex maritime scenarios.

Keywords

Acknowledgement

본 논문은 LIG 넥스원의 "장보고-III Batch-II 소나체계 성능개선 중 기뢰회피소나 국산화 개발"에 일환으로 수행된 결과입니다.

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