DOI QR코드

DOI QR Code

디더 운동 측정치 모델 기반 링레이저 자이로 스트리핑 방법

Stripping Method of Ring Laser Gyroscope Based on Measurement Model of Dither Motion

  • 김천중 (국방과학연구소 제3기술연구본부) ;
  • 심규민 (국방과학연구소 제3기술연구본부)
  • Kim, Cheon-Joong (The 3rd Research and Development Institute, Agency for Defense Development) ;
  • Shim, Kyu-Min (The 3rd Research and Development Institute, Agency for Defense Development)
  • 투고 : 2013.12.17
  • 심사 : 2014.06.13
  • 발행 : 2014.08.05

초록

There are trapping and stripping methods as the technique to remove the dither motion from RLG(Ring Laser Gyro) output. V/F converter output of angular sensor to measure the dither motion is used in stripping method. But bias and scale factor error is always included in V/F converter output and is a critical limiting factor for the wide application of stripping method to RLG. Therefore there have been many researches to solve this problem. The method to accurately estimate the bias and scale factor error of V/F converter using measurements of the angular sensor acquired at data sampling rate of INS is presented in this paper. To this end, stripping technique based on model of dither motion is newly applied.

키워드

참고문헌

  1. J. E. Killpatrick, "The Laser Gyro," IEEE Spectrum, Vol. 4, pp. 44-55, 1967.
  2. Weng W., "Theory of Multioscillator Laser Gyro," Physics of Optical Ring Gyros, Proceedings of SPIE, Vol. 487, pp. 30-32, 1984.
  3. Killpatrick J. E., "Laser Gyro Dither Random Noise," Physics of Optical Ring Gyros, Proceedings of SPIE, Vol. 487, pp. 85-93, 1984.
  4. B. G. Ljung, G. F. Schroeder, "Ring Laser Gyro Dither Pulse Eliminator," US Patent, No. 4433706, 1982.
  5. K. R. Fritze, J. E. Killpartrick, D. F. Berndt, "Ring Laser Gyro Dither Stripper," US Patent, No. 5249031, 1993.
  6. S. Ferriss, N. J. Park, "Electronic Dither Compensator for a Ring Laser Gyro," US Patent, No. 4610543, Sep. 9. 1986.
  7. K. Bohm, R. Rudoloff, "Optical Rotation Sensor," Sensor, Optical Sensor, Vol. 6, pp. 422-464, 1992.
  8. K. M Shim, T. H. Chung and H. J. Lim, "Ditherstripping with the Differential of Dither Rate Signal for a Ring Laser Gyroscope," Journal of The Korean Society for Aeronautical and Space Sciences, Vol. 33, No. 8, pp. 65-74, 2005.