한국해양공학회:학술대회논문집 (Proceedings of the Korea Committee for Ocean Resources and Engineering Conference)
- 한국해양공학회 2003년도 춘계학술대회 논문집
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- Pages.27-31
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- 2003
세 개의 트랜스폰더로 이루어진 장기선 위치추적장치의 민감도 해석
Sensitivity Analysis of Long Baseline System with Three Transponders
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김시문
(한국해양연구원 해양개발시스템연구본부) ;
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이판묵
(한국해양연구원 해양개발시스템연구본부) ;
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이종무
(한국해양연구원 해양개발시스템연구본부) ;
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임용곤
(한국해양연구원 해양개발시스템연구본부)
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Kim, Sea-Moon
(Ocean Development System Laboratory, KRISO/KORDI) ;
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Lee, Pan-Mook
(Ocean Development System Laboratory, KRISO/KORDI) ;
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Lee, Chong-Moo
(Ocean Development System Laboratory, KRISO/KORDI) ;
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Lim, Yong-Kon
(Ocean Development System Laboratory, KRISO/KORDI)
- 발행 : 2003.05.23
초록
Underwater acoustic navigation systems are classified into three systems: ultra-short baseline (USBL), short baseline (SBL), and long baseline (LBL). Because the USBL system estimates the angle of a submersible, the estimation error becomes large if the submersible is far from the USBL transducer array mounted under a support vessel. SBL and LBL systems estimate submersible's location more accurately because they have wider distribution of measuring sensors. Especially LBL systems are widely used as a navigation system for deep ocean applications. Although it is most accurate system it still has estimation errors because of noise, measurement error, refraction and multi-path of acoustic signal, or wrong information of the distributed transponders. In this paper the estimation error of the LBL system are analyzed from a point of sensitivity. It is assumed that the error exists only in the distance between a submersible and the transponders. For this purpose sensitivity of the estimated position with respect to relative distances between them is analyzed. The result says that estimation error is small if the submersible is close to transponders but not near the ocean bottom.
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