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针对舰载机传递对准特点,直接利用主惯导的导航信息进行一次装订,引入了大失准角对准问题.为了解决舰载机传递对准问题,提出利用子惯导自主对准进行一次装订减小子惯导中间坐标系与主惯导间的失准角.分析Wahba问题提出统计意义的Quaternion(四元数)对准方法替换传统的Triad(双矢定姿)对准方法,提高了多信息冗余度和对准精度.基于分级修正思想,提出二次传递对准方法,第一次传递基于非线性模型和自适应渐消扩展卡尔曼滤波,并给出简化的渐消因子计算方法;第二次传递对准基于线性误差模型,采用速度+航向匹配,在补偿失准角的基础上,估计陀螺漂移.仿真结果表明二次传递方法能够满足舰载机传递对准需求.
Aiming at the characteristics of carrier-based aircraft alignment and alignment, aiming at the issue of alignment of large misalignment angles, aiming at the problem of alignment and alignment of carrier-based aircraft, One-time binding reduces the misalignment angle between the middle inertial navigation system and the main inertial navigation.Analysis of the Quaternion (quaternion) alignment method proposed by the Wahba problem to replace the traditional Triad alignment method, Which improves the redundancy and alignment accuracy of multiple information.According to the idea of grading correction, this paper proposes a secondary transfer alignment method, the first transfer based on nonlinear model and adaptive fading extended Kalman filter, and gives simplified fading The second transfer alignment is based on the linear error model and the velocity + heading matching is used to estimate the gyro drift based on the compensation misalignment angle.The simulation results show that the secondary transfer method can meet the requirements of carrier-based aircraft transfer alignment .