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分析了地磁场水平梯度对飞机磁场模型的影响,利用航空磁测试验数据和地磁场水平梯度仿真数据,对飞机磁场模型系数进行了求解计算,并对飞机在特定航向上机动飞行时产生的干扰磁场进行了仿真补偿试验。计算和仿真试验结果表明:地磁场水平梯度引起的飞机磁场和方向余弦变化会使飞机磁场求解结果产生偏差,从而降低飞机磁干扰补偿精度。
The influence of the horizontal gradient of the geomagnetic field on the aircraft magnetic field model is analyzed. Using the magnetic magnetic test data and the geomagnetic horizontal gradient simulation data, the model coefficients of the aircraft magnetic field are solved and calculated, and the interference caused by the aircraft maneuvering in a specific heading Magnetic field simulation test. The results of calculation and simulation show that the magnetic field and directional cosine changes caused by the horizontal gradient of the geomagnetic field will cause the deviation of the solution of the aircraft magnetic field, thus reducing the accuracy of the aircraft magnetic interference compensation.