International Journal of Aeronautical and Space Sciences

  • 제12권1호
  • /
  • Pages.37-42
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  • 2011
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  • 2093-274X(pISSN)
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  • 2093-2480(eISSN)
한국항공우주학회 (The Korean Society for Aeronautical and Space Sciences)
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An Extended Scalar Adaptive Filter for Mitigating Sudden Abnormal Signals of Guided Missile

  • Lim, Jun-Kyu (School of Mechanical and Aerospace Engineering/The Institute of Advanced Aerospace Technology/Automation and Systems Research Institute, Seoul National University) ;
  • Park, Chan-Gook (School of Mechanical and Aerospace Engineering/The Institute of Advanced Aerospace Technology/Automation and Systems Research Institute, Seoul National University)
  • 투고 : 2010.08.19
  • 심사 : 2011.03.15
  • 발행 : 2011.03.30
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초록

An extended scalar adaptive filter for guided missiles using a global positioning system receiver is presented. A conventional scalar adaptive filter is adequate filter for eliminating sudden abnormal jumping measurements. However, if missile or vehicle velocities have variation, the conventional filter cannot eliminate abnormal measurements. The proposed filter utilizes an acceleration term, which is an improvement not used in previous conventional scalar adaptive filters. The proposed filter continuously estimates noise measurement variance, velocity error variance and acceleration error variance. For estimating the three variances, an innovation method was used in combination with the least square method for the three variances. Results from the simulations indicated that the proposed filter exhibited better position accuracy than the conventional scalar adaptive filter.

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참고문헌

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