• Title/Summary/Keyword: Passive linear array sonars

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Performance Analysis of Data Association Applied Frequency Weighting in 3-Passive Linear Array Sonars (주파수 가중치를 적용한 3조의 수동 선배열 소나 센서의 정보 연관 성능 분석)

  • 구본화;윤제한;홍우영;고한석
    • The Journal of the Acoustical Society of Korea
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    • v.23 no.2
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    • pp.109-116
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    • 2004
  • This paper deals with data association using 3 sets of passive linear array sonars (PUS) geometrically positioned in a Y-shaped configuration, but fixed in an underwater environment. The data association problem is directly transformed into a 3-D assignment problem, which is known to be NP-hard. For generic passive sensors, it can be sotted using conventional algorithms, while it in PLAS becomes a formidable task due to the presence of bearing ambiguity. In particular, we proposed data association method robust to bearing measurements errors by incorporating frequency information and analyze a region of ghost problem by geometrical relation PUS and target. We analyzed the effectiveness of the proposed method by representative simulation in multi-target.