• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
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  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 22 Issue 6
Mar.  2010
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Article Contents
KOU Yimin, MA Guangcheng, WANG Changhong. Solution to Geomagnetic Systems in Areas with Smooth Magnetic Fields[J]. Journal of Southwest Jiaotong University, 2009, 22(6): 951-957.
Citation: KOU Yimin, MA Guangcheng, WANG Changhong. Solution to Geomagnetic Systems in Areas with Smooth Magnetic Fields[J]. Journal of Southwest Jiaotong University, 2009, 22(6): 951-957.

Solution to Geomagnetic Systems in Areas with Smooth Magnetic Fields

  • Received Date: 23 Sep 2008
  • Publish Date: 20 Jan 2010
  • To solve the divergence problem of traditional Kalman filter-based geomagnetic navigation systems caused by their unobservability in the areas with smooth magnetic fields,a new algorithm was proposed.The algorithm uses linearized planes to fit a smooth magnetic field,the vector properties of the magnetic field to construct linear equations,and multi-level submaps to realize fast and accurate position estimation.The observation equation of the Kalman filter was constructed based upon the position estimation.Theoretical analysis and simulations proved the effectiveness of the algorithm.

     

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