S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Mechanical Aerospace Engineering (기계항공공학부) Journal Papers (저널논문_기계항공공학부)
An Extended Scalar Adaptive Filter for Mitigating Sudden Abnormal Signals of Guided Missile
- Issue Date
- International Journal of Aeronautical & Space Science, 12(1), 37-42
- 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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