Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Self-Alignment/Navigation Performance Analysis in the Accelerometer Resonance State Generated by Dither Motion of Ring Laser Gyroscope in Laser Inertial Navigation System

레이저 관성항법장치에서 링레이저 자이로 디더 운동에 의한 가속도계 공진이 자체 정렬/항법 성능에 미치는 영향 분석

  • Kim, Cheonjoong (The Missile Research Institute, Agency for Defense Development) ;
  • Lim, Kyungah (The Missile Research Institute, Agency for Defense Development) ;
  • Kim, Seonah (The Missile Research Institute, Agency for Defense Development)
  • 김천중 (국방과학연구소 미사일연구원 6부) ;
  • 임경아 (국방과학연구소 미사일연구원 6부) ;
  • 김선아 (국방과학연구소 미사일연구원 6부)
  • Received : 2021.05.05
  • Accepted : 2021.10.08
  • Published : 2021.12.05
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Abstract

In this paper, we theoretically analyzed the self-alignment/navigation performance in the accelerometer resonance state generated by dither motion of ring laser gyroscope in LINS and verified it through simulation. As a result of analysis, it is confirmed that the amplitude of the accelerometer measurement amplified in the accelerometer resonance state is decreased in the process of sampling per the navigation calculation period and that frequency is changed by the aliasing effect too. It was also analysed that the attitude error in self-alignment is determined by the amplitude/frequency of the accelerometer measurement, the gain of the self-alignment loop, and the velocity and position error in the navigation is determined by the amplitude/frequency/phase error of the accelerometer measurement. This analysis and simulation results show that the self-alignment and navigation performance is not be degraded only when the amplification factor of the accelerometer measurement in the accelerometer resonance state is 3 or less

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References

  1. Kenneth R. Britting, Inertial Navigation Systems Analysis, John Wiley & Sons, Inc., 1971.
  2. D. H. Titterton and J. L. Weston, Strapdown Inertial Navigation Technology, IEE Radar, Sonar, Navigation and Avionics Series, 1977.
  3. G. M. Siouris, Aerospace Avionics Systems, Academic Press, Inc., 1993.
  4. K. Shin and T. Chung, "A Study on the Lock-in and Random Walk Characteristics by Dither Amplitude Modulation of a Ring Laser Gyroscope," Journal of the Korean Society for Aeronautical and Space Sciences, Vol. 29, No. 1, pp. 72-80, 2001.
  5. J. M. Oelschlaeger and L. O. Thielman, "GG1308 Ring Laser Gyro Inertial Measurement Systems - Honeywell's Low Cost Solution for Tactical Applications," IEEE Conference, pp. 528-536, 1990.
  6. H. Kim, C. Kim and T. Lee, "Performance Analysis on the Initial Alignment of Laser Inertial Navigation System," Journal of the Korea Institute of Military Science and Technology, Vol. 12, No. 5, pp. 622-635, Oct., 2009.
  7. A. V. Oppenheim and R. W. Schafer, Discrete-Time Signal Processing, Prentice-Hall International, Inc., 1989.
  8. Y. F. Jiang, Y. P. Lin, "Error Estimation of Ground Alignment to Arbitrary Azimuth," AIAA, 1993.
  9. K. R. Britting, T. Palsson, "Self-Alignment Techniques for Strapdown Inertial Navigation Systems with Aircraft Application," J. Aircraft, Vol. 7, No. 4, 1968.