磁罗盘误差校准方法及其在海洋领域的应用

Error Calibration Method of Magnetic Compass and its Application in Marine Field

摘要:

针对磁罗盘自身误差以及载体平台磁干扰导致磁罗盘测量精度不高的问题,提出了一种磁罗盘误差校准方法。通过对磁罗盘自身误差以及载体平台磁干扰产生的误差进行分析,建立了误差校准模型,并结合实际应用条件给出了磁罗盘平面校准方法和空间校准方法,采用最小二乘回归算法对模型求解,解决了磁罗盘现场校准问题。利用所研制的磁罗盘开展了施加磁干扰后的磁罗盘校准验证实验,并对校准前后的方位角精度进行了测试。试验结果表明：在将施加磁干扰后方位角最大误差12°的条件下,利用该方法校准后方位角最大误差仅为0.2°,说明了该方法的有效性。最后介绍了磁罗盘在海洋领域常见的几种应用。

Abstract:

Aiming at the problem of low measurement accuracy of magnetic compass caused by its own error and magnetic interference of carrier platform, a magnetic compass error calibration method is proposed. By analyzing the error of the magnetic compass itself and the error caused by the magnetic interference of the carrier platform, the error calibration model is established. Combined with the practical application conditions, the plane calibration method and space calibration method of the magnetic compass are given. The least square regression algorithm is used to solve the model and solve the problem of on-site calibration of the magnetic compass. Using the developed magnetic compass, the calibration verification experiment of magnetic compass with magnetic interference is carried out, and the azimuth accuracy before and after calibration is tested. The experimental results show that this method can calibrate the maximum azimuth error of 12 ° with magnetic interference to only 0.2 °, which shows the effectiveness of this method. Finally, several common applications of magnetic compass in marine field are introduced.