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鲁棒容错滤波算法及在MEMS_SINS/GPS中的应用

Keywords: 组合导航,捷联惯性导航系统,微机电系统,故障估计,容错滤波

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Abstract:

针对MEMS_SINS/GPS组合导航系统中,GPS量测输出信息中常含有故障信号的问题,提出一种鲁棒容错滤波算法.将GPS量测输出中可能含有的故障信号扩充为系统的状态,通过鲁棒滤波算法在线实时估计出来,并对系统进行补偿,达到容错的目的.用MEMS_SINS/GPS组合导航系统中得到的实验数据对该算法进行离线仿真验证.结果表明,该算法能有效降低GPS中故障信号的不利影响,使系统在此期间仍能工作在正常范围内.

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