Airborne magnetic sensor on-line calibration method

The invention relates to the field of a magnetic sensor, and especially relates to an airborne magnetic sensor on-line calibration method. The magnetic sensor on-line calibration method is characterized in that an eight-octant sampling method based on an accelerometer and a gyroscope fusion attitude is employed, magnetic field distribution condition is really reflected as possible, and influence on fitting result precision of the magnetic sensor due to gyroscope drifting, accelerometer vibration and magnetic sensor interference can be reduced. The on-line calibration of the magnetic sensor enable automatic operation after the magnetic sensor powers on, manual arrangement by a user is not required, complex degree of unmanned plane usage is greatly simplified, and the on-line calibration of the magnetic sensor has convenient operation and increased user experience. 本发明涉及磁传感器领域，尤其涉及种机载磁传感器的在线标定方法。本发明的磁传感器在线标定方法通过种基于加速度计和陀螺仪融合姿态的八卦限采样方法，尽可能真实地反映磁场分布情况，减少陀螺仪漂移、加速度计振动、以及磁传感器干扰对磁传感器拟合结果精度的影响；同时磁传感器的在线标定从开机后就可以自行启动运行