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

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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A Study on Optimal Hydrophone Arrangement for The Direction Finding of High Speed Moving Target in Underwater

수중에서 고속 기동하는 표적의 방위 탐지를 위한 최적의 청음기 배치 연구

  • Han, Min-Su (The 6th Research and Development Institute, Agency for Defense Development) ;
  • Choi, Jae-Yong (The 6th Research and Development Institute, Agency for Defense Development) ;
  • Kang, Dong-Seok (The 6th Research and Development Institute, Agency for Defense Development) ;
  • Son, Kweon (The 6th Research and Development Institute, Agency for Defense Development) ;
  • Lee, Phil-ho (The 6th Research and Development Institute, Agency for Defense Development)
  • 한민수 (국방과학연구소 제6기술연구본부) ;
  • 최재용 (국방과학연구소 제6기술연구본부) ;
  • 강동석 (국방과학연구소 제6기술연구본부) ;
  • 손권 (국방과학연구소 제6기술연구본부) ;
  • 이필호 (국방과학연구소 제6기술연구본부)
  • Received : 2016.08.29
  • Accepted : 2017.04.14
  • Published : 2017.06.05
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Abstract

One of good DF(Direction Finding) methods is based on TDOA(Time Difference of Arrival) estimation when finding underwater moving target. For small DF error, high time resolution A/D(Analog-to-digital) conversion board and long baseline are needed. But the result of sea trial about close-range and high speed moving target, spatial correlation coefficient and appeared poor properties below 0.3 when hydrophone arrangement are separated over 6 ${\lambda}$ because of underwater fading channel. And we also find out that the distance between hydrophone should be under 4 ${\lambda}$ apart to take advantage of spatial correlation coefficient gain and performance of DF in underwater moving channel environments.

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References

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