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航向信息是空投系统运行中一个非常重要的参数,磁航姿系统能够利用地磁场来测量载体的姿态信息,体积小、精度高,但却易受外界磁场的干扰;而惯性器件恰好具有不受环境磁场影响的特性。将两种传感器组合起来,共同测量载体的航向信息。经过仿真验证,外部姿态信息的引入极大地改善了系统的航向误差,满足空投系统应用需求。
The heading information is a very important parameter in the operation of the airdrop system. The magnetic navigation attitude system can measure the attitude information of the carrier by using the geomagnetic field. It is small in size and high in precision, but it is easily disturbed by the external magnetic field. However, the inertial device has exactly Environmental magnetic field characteristics. The two kinds of sensors are combined to jointly measure the heading information of the carrier. After simulation, the introduction of external gesture information greatly improves the system’s heading error and meets the application requirements of the airdrop system.