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Volume 25 Issue 6
Jun.  1999
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Journal of Beijing University of Aeronautics and Astronautics  > 1999  >  25(6): 728-731.
Fang Jiancheng, Zhu Shiping, Yu Wenboet al. Fast Initial Alignment Method of Inertial NavigationSystem on Stationary Base[J]. Journal of Beijing University of Aeronautics and Astronautics, 1999, 25(6): 728-731. (in Chinese)
Citation: Fang Jiancheng, Zhu Shiping, Yu Wenboet al. Fast Initial Alignment Method of Inertial NavigationSystem on Stationary Base[J]. Journal of Beijing University of Aeronautics and Astronautics, 1999, 25(6): 728-731. (in Chinese)
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Fast Initial Alignment Method of Inertial NavigationSystem on Stationary Base

  • Beijing University of Aeronautics and Astronautics,School of Astronautics

  • Received Date: 26 May 1999
  • Publish Date: 30 Jun 1999
    Abstract
  • The initial alignment of INS is a very important procedure. It is very valuable to the INS used in various weapon system and civil system that the best alignment accuracy is obtained in the shortest time. Because of the poor observability of INS on stationary base,the estimation of the azimuth error will converge very slowly in initial alignment by means of Kalman filter. A fast estimation method of the azimuth error is creatively proposed for the initial alignment of INS on stationary base. On the basis of the fast convergence of the leveling error,the azimuth error can be directly calculated.By means of this fast initial alignment method, the time of initial alignment is reduced greatly. The computer simulation results illustrate the efficiency of this method.

     

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    • References(1)
  • 1. Jiang Y E, Lin Y P. Error estimation of INS ground alignment through observability analysis. IEEE Transactions on Aerospace and Electronic Systems. 1992, 28(1): 92~97 2. Bar-Itzhack I Y, Berman N. Control theoretic approach to inertial navigation systems. Journal of Guidance and control, 1988, 11(3): 237~245 3. Meskin D G, Bar-Itzhack I Y. Observability analysis of piece-wise constant systems(part I): Theory: IEEE Transactions on Aerospace and Electronic Systems, 1992, 28(4): 1056~1067 4. Fang J C, Wang D J. A fast initial alignment method for strapdown inertial navigation system on stationary base. IEEE Transactions on Aerospace and Electronic Systems, 1996, 32(4): 1501~1505 5. 房建成,周 锐,祝世平.捷联惯导系统动基座对准的可观测性分析.北京航空航天大学学报,1999,25(6):714~719 6. 房建成,万德钧GPS/SINS组合导航系统的动基座快速初始对准方法.中国惯性技术学报,1996,4(3):6~10 7. 万德钧,房建成惯性导航初始对准南京:东南大学出版社,1998
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