한국정보통신학회논문지 (Journal of the Korea Institute of Information and Communication Engineering)

  • 제20권1호
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  • Pages.222-229
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  • 2016
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  • 2234-4772(pISSN)
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  • 2288-4165(eISSN)
한국정보통신학회 (The Korea Institute of Information and Commucation Engineering)
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수중 무인정 궤적 교란에 따른 SAS 방위해상도 영향에 대한 분석

Influences Analysis of SAS Azimuth Resolution on the UUV Trajectory Disturbances

  • Kim, Boo-il (Department of Interdisciplinary Program of Weapon Systems Engineering, Specialized Graduate School Science & Technology Convergence, Pukyong National University)
  • 투고 : 2015.11.03
  • 심사 : 2015.12.15
  • 발행 : 2016.01.31
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초록

수중에서 운용되는 소형 무인정 탑재 능동 합성개구면소나는 외부에서 발생되는 수중환경의 영향으로 플렛품 진행시 여러 가지 궤적 교란이 발생하게 되고 개구면 합성처리에 있어서 많은 오차를 가져 온다. 본 논문에서는 진행현측방향으로 주기적 및 랜덤 궤적교란이 발생될 때 합성개구면 초점처리에 의한 위상차 부정합에 따른 방위해상도에 미치는 영향을 비교 분석하였다. 시뮬레이션 결과, 주기적 궤적교란은 발생 교란 크기가 $0.3{\lambda}$, 변동 주기가 $2L_{sa}$보다 커지면 허위표적이 발생되고 방위해상도가 매우 나빠지게 되며, 합성개구면처리에 의한 해저 소형물체 탐지성능은 플렛폼의 궤적변동 종류와 조건에 따라서 방위해상도에 많은 영향을 미치는 특성을 나타내었다.

Active synthetic aperture sonar on the small UUV is generated several trajectory disturbances under the influences of underwater environments, and causing a large error in the synthetic aperture processing. In this paper, we analyzed the effects of azimuth resolution for the phase mismatch of the synthetic aperture focus processing when the periodic or random trajectory disturbances was generated on the side direction. The simulation results show that ghost targets are generated and azimuth resolution is very deteriorated when disturbance amplitude is greater than $0.3{\lambda}$ and disturbance period is greater than $2L_{sa}$ in the periodic trajectory disturbances environments. And detection performance on the seabed small objects by the synthetic aperture processing is shown that there is a significant effects on the azimuth resolution depending on the types and conditions of the platform trajectory disturbance variations.

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참고문헌

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피인용 문헌

  1. 수중무인체 궤적교란 보상을 위한 능동 SAS 자동초점처리 성능 분석 vol.21, pp.1, 2016, https://doi.org/10.6109/jkiice.2017.21.1.215
  2. 다중 수신기 DPC 처리에 의한 속도 교란 수중 무인체의 자동초점 위상 보상 vol.21, pp.10, 2016, https://doi.org/10.6109/jkiice.2017.21.10.1973