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 Determining the Performance Requirements of Ship's Inertial Navigation System Based on Ring Laser Gyroscope

링 레이저 자이로 기반 함정용 관성항법장치 성능규격 결정에 대한 연구

  • Kim, Cheonjoong (The 3rd Research and Development Institute, Agency for Defense Development) ;
  • Yu, Haesung (The 3rd Research and Development Institute, Agency for Defense Development) ;
  • Yoo, Kijeong (The 3rd Research and Development Institute, Agency for Defense Development) ;
  • Park, Chanju (The 3rd Research and Development Institute, Agency for Defense Development) ;
  • Lee, Sangjeong (Department of Electronics Engineering, Chungnam National University)
  • 김천중 (국방과학연구소 제3기술연구본부) ;
  • 유해성 (국방과학연구소 제3기술연구본부) ;
  • 유기정 (국방과학연구소 제3기술연구본부) ;
  • 박찬주 (국방과학연구소 제3기술연구본부) ;
  • 이상정 (충남대학교 전자공학과)
  • Received : 2018.05.04
  • Accepted : 2018.11.02
  • Published : 2018.12.05
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Abstract

In this paper, a study result to decide the accuracy specifications of inertial sensors satisfying the performance requirements of SINS(ship's inertial navigation system) is proposed. To do this, the performance specifications of overseas SINS is surveyed and the detailed error analysis of SINS at stationary condition is performed. Also, a new performance index to indicate the performance of SINS is derived. Modelling and simulation results show that the accuracy specifications of inertial sensors to meet the performance requirements of SIGMA40XP, a typical overseas SINS, can be determined through the newly derived performance index in this paper.

Keywords

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Fig. 1. Propagation characteristic of position error

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Fig. 2. Comparison of error analysis result through covariance analysis and performance index Eq. (51)

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Fig. 3. Comparison of error analysis result through covariance analysis and performance index Eq. (48)

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Fig. 4. Comparison of error analysis result through covariance analysis and performance index Eq. (58)

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Fig. 5. Position error simulation result through covariance analysis method

Table 1. Performance survey result of overseas ship’s inertial navigation system

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Table 2. Latitude & longitude error by initial attitude and inertial sensor error sources

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Table 3. TRMS latitude & longitude error by initial attitude and inertial sensor error sources

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Table 4. Navigation performance analysis result according to ship’s various operational conditions

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