三轴磁传感器分量误差两步校正方法

在三轴磁传感器测量误差校正方面，传统的椭球拟合算法只能实现磁场总量的校正，没有给出明确的测量误差模型参数求解方法，无法保证磁场分量校正效果。针对此种情况，提出三轴磁传感器分量误差的两步校正方法。第一步，建立三轴磁传感器测量误差模型，利用椭球拟合算法求解中间参数；第二步，对中间参数进行解耦，得到实际三轴磁传感器测量误差模型参数，从而实现三轴磁传感器的磁场总量和分量校正。仿真结果表明该方法能够精确求解出三轴磁传感器测量误差模型参数，从而有效实现三轴磁传感器分量误差校正。实验结果验证了该方法的有效性。

Component Calibration of Three-Axis Magnetometer with Two Step method

In the aspect of measurement error calibration of three-axis magnetometer, the traditional ellipsoid fitting algorithm can achieve the scalar calibration of the magnetic field, but the method for solving the measurement error model parameters was not clear, so that the calibration effect of the magnetic components is not guaranteed. Aiming at this situation, a two-step calibration method for component calibration of three-axis magnetometer is proposed. Firstly, based on the measurement error model of three-axis magnetometer, the intermediate parameters are solved by using the ellipsoid fitting algorithm. Secondly, the intermediate parameters are decoupled to obtain the parameters of the measurement error model. Then, the parameters of the measurement error model are used to achieve calibration of the magnetic field scalar and components. Simulation results show that this method can accurately solve the measurement error model parameters, thus effectively implement the component calibration of three-axis magnetometer. Experimental results demonstrate the effectiveness of the proposed method