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捷联惯导系统最优多位置对准的确定与分析

, PP. 330-334

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Abstract:

为了实现捷联惯导系统(SINS,StrapdownInertialNavigationSystem)快速精确对准,研究了SINS进行最优多位置对准的条件及方法.利用李雅普诺夫变换得到的SINS等价误差模型,在对惯性测量单元(IMU,InertialMeasurementUnit)绕正交轴旋转时SINS可观测性进行定量分析的基础上,通过研究惯性器件误差与IMU角位置之间的关系,定量分析了IMU的转动方式,明确了使SINS误差状态达到最优估计时IMU的最佳旋转角位置.最后,通过仿真验证了理论分析的正确性.

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