International Journal of Aeronautical and Space Sciences

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Improvement of a Low Cost MEMS Inertial-GPS Integrated System Using Wavelet Denoising Techniques

  • Kang, Chang-Ho (School of Mechanical and Aerospace Engineering/Automation and Systems Research Institute/The Institute of Advanced Aerospace Technology & Automation and Systems Research Institute, Seoul National University) ;
  • Kim, Sun-Young (School of Mechanical and Aerospace Engineering/Automation and Systems Research Institute/The Institute of Advanced Aerospace Technology & Automation and Systems Research Institute, Seoul National University) ;
  • Park, Chan-Gook (School of Mechanical and Aerospace Engineering/Automation and Systems Research Institute/The Institute of Advanced Aerospace Technology & Automation and Systems Research Institute, Seoul National University)
  • Received : 2011.11.03
  • Accepted : 2011.12.07
  • Published : 2011.12.30
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Abstract

In this paper, the wavelet denoising techniques using thresholding method are applied to the low cost micro electromechanical system (MEMS)-global positioning system(GPS) integrated system. This was done to improve the navigation performance. The low cost MEMS signals can be distorted with conventional pre-filtering method such as low-pass filtering method. However, wavelet denoising techniques using thresholding method do not distort the rapidly-changing signals. They can reduce the signal noise. This paper verified the improvement of the navigation performance compared to the conventional pre-filtering by simulation and experiment.

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References

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