S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Mechanical Aerospace Engineering (기계항공공학부) Others_기계항공공학부
New Coning Error Compensation Method Using Direct Signal Estimation
- Kang, Chul Woo; Park, Chan Gook; Cho, Nam Ik
- Issue Date
- 18th IFAC Symposium on Automatic Control in Aerospace
- This paper proposes new coning mitigation algorithm based on the signal processing technique.
For accurate attitude calculation of inertial navigation system, the coning error mitigation is a key part of
attitude computation. Many researchers have used gyro outputs to calculate higher-order correction terms.
But these results have a performance limit because they assume the signals to be polynomials. The
proposed algorithm detects and estimates the sinusoidal components from gyro measurements. If coning
signals occur in gyro measurements, a sinusoidal signal can be estimated using adaptive notch filtering,
and higher-order correction terms can be calculated from parameters of this estimated signal. The
proposed algorithm can properly operate on a vehicle with continuous and steady oscillations. Simulation
results show that the direct compensation algorithm worked efffectively.
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