针对磁罗盘在水雷引信应用中存在磁干扰而影响测量精度的问题,给出了椭球拟合法进行磁罗盘校正的方法。通过分析磁干扰的来源,建立了磁罗盘测试磁场的数学模型,并运用最小二乘法对模型进行分析计算,得到罗盘校正的相关参数,最后通过试验采集数据来进行了校正计算,并对计算得到的参数进行角度标定测试,验证了该方法的可行性。 Aiming at the problem that the magnetic compass has magnetic interference in the application of mine fuze and affects the measurement accuracy, a method of ellipsoidal fitting for magnetic compass correction is given. By analyzing the source of magnetic interference, a mathematical model of the magnetic field of the magnetic compass was set up, and the model was analyzed and calculated by the least squares method. The relevant parameters of the compass correction were obtained. Finally, the calibration calculation was carried out through the experimental data collected. The parameters of the angle calibration test to verify the feasibility of the method.