Calibration method for sway error of three-axis fluxgate

Aiming at the problem that attitude changes will cause sway errors of the fluxgate, firstly, the attitude change error model is constructed theoretically, and the influence of attitude changes on the three-axis fluxgate is analyzed; secondly, in order to improve measurement accuracy of the fluxgate, reduce the measurement error caused by the change of attitude, the calibration method for sway error of fluxgate is proposed. Furthermore, the error calibration model is established. Finally, the effectiveness of the method is verified by simulation and actual experiment. The uniaxial absolute error can be up to 4.64% at a minimum. The calibration effect is good, and the calibrated data can basically meet actual needs.