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分析了地磁场梯度对飞机磁场模型的影响,利用飞机磁补偿实验数据及地磁场梯度仿真数据,对考虑地磁场梯度和不考虑地磁场梯度两种情况下飞机磁场的求解结果进行了比较,并对飞机在0°、90°、180°、270°四个特定航向上,进行横滚、俯仰、偏航机动飞行时产生的干扰磁场进行了仿真补偿实验。仿真结果表明,地磁场梯度引起的模型系数计算偏差最大可达5.24,相应的磁干扰补偿率将下降35.3%。
The influence of the gradient of the geomagnetic field on the aircraft magnetic field model is analyzed. The calculation results of the aircraft magnetic field under both the gradient of the geomagnetic field and the gradient of the geomagnetic field are compared by using the experimental data of the magnetic compensation of the aircraft and the geomagnetic field gradient simulation data Simulation experiments were conducted on the disturbing magnetic field produced by the aircraft during rolling, pitch and yaw maneuvering at four specific headings of 0 °, 90 °, 180 ° and 270 °. Simulation results show that the variation of model coefficients caused by the gradient of geomagnetic field can reach up to 5.24, and the corresponding magnetic interference compensation rate will decrease by 35.3%.