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논문 기본 정보

자료유형
학술저널
저자정보
유태석 (LIG넥스원) 김문환 (LIG넥스원) 윤선일 (LIG넥스원) 김대중 (LIG넥스원)
저널정보
한국해양공학회 한국해양공학회지 한국해양공학회지 제33권 제5호(통권 제150호)
발행연도
2019.10
수록면
470 - 478 (9page)

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초록· 키워드

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Because the global positioning system (GPS) is not available in underwater environments, an inertial navigation system (INS)/doppler velocity log (DVL) integrated navigation system is generally implemented. In general, an INS/DVL integrated system adopts a loosely coupled method. However, in this loosely coupled method, although the measurement equation for the filter design is simple, the velocity of the body frame cannot be accurately measured if even one of the DVL transducer signals is not received. In contrast, even if only one or two velocities are measured by the DVL transducers, the tightly coupled method can utilize them as measurements and suppress the error increase of the INS. In this paper, a filter was designed to regenerate the measurements of failed transducers by taking advantage of the tightly coupled method.
The regenerated measurements were the normal DVL transducer measurements and the estimated velocity in RPM.
In order to effectively estimate the velocity in RPM, a filter was designed considering the effects of the tide. The proposed filter does not switch all of the measurements to RPM if the DVL transducer fails, but only switches information from the failed transducer. In this case, the filter has the advantage of being able to be used as a measurement while continuously estimating the RPM error state. A Monte Carlo simulation was used to determine the performance of the proposed filters, and the scope of the analysis was shown by the standard deviation (1σ, 68%). Finally, the performance of the proposed filter was verified by comparison with the conventional tightly coupled method.

목차

ABSTRACT
1. 서론
2. 일반적인 INS/DVL 복합항법
3. 강결합 기반 INS/DVL/RPM 복합항법 필터 설계
4. 수치 시뮬레이션
5. 결론
References

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