Volume 31 Issue 10
Oct.  2005
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Zhao Long, Chen Zhe. Lyapunov adaptive filtering and its application in INS/SMNS integrated navigation system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(10): 1084-1086. (in Chinese)
Citation: Zhao Long, Chen Zhe. Lyapunov adaptive filtering and its application in INS/SMNS integrated navigation system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(10): 1084-1086. (in Chinese)

Lyapunov adaptive filtering and its application in INS/SMNS integrated navigation system

  • Received Date: 02 Jul 2004
  • Publish Date: 31 Oct 2005
  • In order to overcome the shortcomings that traditional least square algorithm tends to become divergence with the increase of matching points INS/SMNS (inertial navigation system/scene matching navigation system) integrated navigation system, an improved LAF(Lyapunov adaptive filtering), based on MIMO (multi-input-multi-output) system, is presented. On the basis of the information of observation formula in the algorithm, the recursive formula of LAF is obtained by the definition of filtering error and priori estimation error of LAF. The stability and convergence of LAF are proved by Lyapunov stability theory. LAF is applied to INS/SMNS integrated navigation system, and the simulation results demonstrate that compared with RLS( recursive least square) algorithm, LAF is simpler and more reliable, and its filtering performance is better.

     

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