地磁导航因其自身的隐蔽性、自主性、高鲁棒性相比于传统导航方式有着诸多优势。针对飞行器在飞行过程中频繁进行姿态变换的现状,相比于以往单一建模方式,文中引进涡流磁场进行一体化建模,并采用EKF算法进行补偿。仿真结果表明,含涡流的一体化模型在做姿态变换的飞行器磁场补偿中,既明显降低了误差幅值,又有效滤除涡流磁场所引起的波动,有着更高、更稳定的补偿精度。实验结果亦证明了仿真结果的正确性。

Geomagnetic navigation has many advantages over traditional navigation methods because of its own concealment, autonomy and high robustness. In view of the current situation of frequent attitude change during flight, compared with the previous single modeling method, this paper introduces eddy current magnetic field for integrated modeling and uses EKF algorithm to compensate. The simulation results show that the integrated model with eddy current not only reduces the error amplitude significantly, but also effectively filters out the fluctuation caused by the eddy current magnetic field in the attitude compensation of the aircraft. It has higher and more stable compensation accuracy. The experimental results also prove the correctness of the simulation results.