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Issue:
Tracking ballistic target based on square root quadrature Kalman filter
Author(s):
WU Chun-ling
,
HAN Chong-zhao
Pages:
721
-
724,729
Year:
2010
Issue:
5
Journal:
Control and Decision
Keyword:
弹道目标跟踪
;
求积卡尔曼滤波
;
扩展卡尔曼滤波
;
非线性滤波
;
Abstract:
针对再入阶段的弹道目标跟踪问题,提出运用平方根求积卡尔曼滤波器(SRQKF)估计目标的状态.所提出的算法是求积卡尔曼滤波(QKF)算法的平方根实现.该算法传播了目标状态的均值和协方差的平方根,确保了协方差矩阵的对称性和半正定性,改进了数值精度和稳定性,但其计算复杂性稍有增加.仿真实验表明,所提出算法的估计精度优于QKF算法和扩展卡尔曼滤波(EKF)算法,是一种很有效的非线性滤波方法.
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