舰载机动基座快速对准方法研究

Research on Rapid Alignment Method of Carrier-based Aircraft on Mobile Base

由于舰载机弹射过程中机体的运动加速度较大,有利于提高系统的可观测性,弹射起飞是实现舰载机快速对准的重要手段。实现舰载机在弹射过程中的快速对准,其关键在于抑制振动干扰对初始对准精度的影响。通过建立舰载机动基座对准非线性误差模型,分析在弹射对准的过程中由于前起落架振动造成的对准发散问题,并在此基础上,利用强跟踪滤波算法抑制弹射过程中对准的振动干扰。仿真结果表明,强跟踪滤波方法相对卡尔曼滤波而言,可以有效提高舰载机惯导快速对准精度。

Catapult launch is the important means to rapid alignment of carrier-based aircraft for the movement acceleration of the body is so large in the process of catapult that it is helpful to improve the observability of the system. To realize the rapid alignment in the process of catapult, the key is to suppress vibration interference effects on the precision of initial alignment. In this paper, we established the error model based on the nonlinear on rapid alignment of carrier-based aircraft on mobile base, and then analyzed the divergence problem caused by the nose gear vibration in the process of catapult alignment, and on this basis, we use strong tracking filtering algorithm to suppress vibration interference in the process of alignment. The simulation results show that the strong tracking filtering method can improve the precision of rapid alignment on carrier-based aircraft inertial navigation effectively than Kalman filter.