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针对双轴旋转惯导系统转位方案的设计和选择问题,提出了3种合理的转位方案:16次序、24次序和32次序,建立了旋转惯导系统的误差方程和卡尔曼滤波模型。观测量取速度误差和位置误差时,分别对3种转位方案下精对准过程进行了分析仿真。结果表明,24次序转位方案精对准过程所需时间最短,精度最高,其次是32次序,16次序转位方案精对准过程所需时间最长,精度最低。
Aiming at the design and selection of the translocation scheme of biaxial inertial navigation system, three reasonable translocation schemes are proposed: 16 orders, 24 orders and 32 orders. The error equation and Kalman filter model of the rotating inertial navigation system are established. When taking the velocity error and the position error, the precision alignment process of the three kinds of indexing schemes were analyzed and simulated respectively. The results show that the time required for the alignment process of 24-bit transposition scheme is the shortest, with the highest precision, followed by 32 orders. The alignment process of the 16-bit transposition program takes the longest time and the lowest precision.