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基于通用FLAC的模糊自适应UKF算法及其应用

Jianwen LI,Shunyi HAO,NG HUA

Chinese Journal of Sensors and Actuators（2009）

Cited 2|Views2
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Abstract
针对量测噪声方差统计值未知的非线性UKF(Unscented Kalman Filter)滤波问题,提出了一种基于通用FLAC(Fussy Logic Adaptive Controller)的模糊自适应UKF算法.在标准的非线性UKF算法基础上,以残差的实际方差与理论方差的比值作为FLAC的输入,使FLAC对滤波模型的依赖性减弱,强化了模糊自适应UKF方法的通用性;在对未知的量测噪声方差阵进行动态调节的过程中设置了指数调节参数,可不同程度地放大或缩小方差阵调节的幅度,使算法的调节速度和精度得到控制.将算法应用于GPS/DR(Dead-Reckoning)组合导航系统中,仿真结果表明了该算法的有效性.
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Key words
Adaptive,Fussy logic,Innovation,Integrated navigation,Ukf algorithm
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