【摘要】 提出一种基于误差分离的矢量校准法用于三轴感应式磁传感器的正交性校正.建立了正交性校正的矢量校准数学模型,针对校正过程中的安装误差进行误差项分离校正,结合卡尔曼滤波与最小二乘法对模型参数进行求解得到正交性校正矩阵.仿真和实验结果表明,基于矢量校准数学模型的校准方法可行且有效,在输入磁场2.5 nT情况下,测量误差由传统方法的0.0962 nT减小到0.0019nT.此方法已应用于某星载感应式磁力仪的正交性校正.更多还原

【Abstract】 An vector calibration method is proposed based on the error separation technique for orthogonality correction of three-axis magnetic sensor. Mathematical model of vector calibration was established for orthogonality correction. The installation error in the process of correction was calibrated by the error separation technique. Model parameters were solved with a kind of method which combined the Kalman filtering and least square method and got a matrix that can be used to the orthogonality correction. The simulation and experiment results showed that the whole calibration process was feasible and effective. The error reduced from 0.0962 nT to 0.0019 nT in the case of total magnetic field was 2.5 nT. This method has been applied to the orthogonality correction of an satellite-boneinduction magnetometer.更多还原