在地磁测姿中,需要用地磁传感器来测量实际环境的磁场强度作为测量姿态角的重要信息。由于地磁传感器在实际测量过程中,受弹体本身磁体干扰、测量环境、安装误差等影响会产生误差,所以必须对其进行标定才可以得到有效准确的地磁测量值。文中使用多位置法结合最小二乘法对地磁传感器进行标定。通过实验证明,利用文中方法可以使磁场强度的测量最大误差控制在50nT内,满足实际工程需要,是一种相对简便精确的地磁传感器标定方法。

In geomagnetic attitude measurement, it is necessary to use geomagnetic sensors to measure the magnetic field intensity of actual environment as an important information for measuring the attitude angle. Because the geomagnetic sensor would cause errors in the actual measurement process, which was affected by the magnet interference of the projectile itself, the measurement environment and installation errors, it was necessary to standardize it to get effective and accurate geomagnetic measured value. In this paper, multi position method and least square method were combined to standardize geomagnetic sensors. It is proved by the experiments that the maximum error of magnetic field intensity is controlled within 50 nT, which meets the needs of practical engineering, and it is a relatively simple and accurate standardizing method for geomagnetic sensors.