一种基于UKF的MEMS/GPS组合导航算法

Torpedo Technology(2013)

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Abstract
针对微电子机械(MEMS)/全球定位(GPS)组合导航系统中,强非线性引起的扩展卡尔曼滤波(EKF)导航精度不高、滤波性能不稳定、收敛速度慢等问题,研究了MEMS/GPS组合导航系统无迹卡尔曼滤波(UKF)算法,避免了EKF繁重的求导计算。本文对2种滤波方法进行了仿真比较,结果表明,用UKF的组合导航系统的误差收敛速度比EKF快,精度也比EKF高,UKF算法更适合于MEMS/GPS组合导航。
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Key words
micro electro mechanical system/global positioning system integrated navigation system,extended Kalman filter,unscented Kalman filter
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