Aiming at the problems of inconvenient operation and difficult calibration when three-axis magnetometer which installed on large projectile is calibrated

considering the influence of temperature on magnetometer

a multi-angle ellipsoid fitting compensation method based on least squares method is proposed from practical engineering application point of view. The error source of the magnetometer is analyzed. The influence law of temperature on the magnetometer is explored by experiment. The error model including the temperature influence factor is established. The output signal of the magnetometer is ellipsoid fitting calibrated by the principle of least squares method. Finally

the effectiveness of the method is proved by calibration experiments.