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�������պ����ѧѧ�� 2004, Vol. 30 Issue (05) :434-437    DOI:
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Adaptive fading Kalman filter with applications in integrated navigation system
Geng Yanrui, Cui Zhongxing, Zhang Hongyue, Fang Jiancheng*
School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� The reasons of the instability of Kalman filter were analyzed from the stability of Kalman filter. A new group of adaptive estimation methods of Kalman filter fading factor were developed and simulated in GPS/SINS(global position system and strapdown inertial navigation system) integrated navigation system. The characteristic that the filter residuals were zero-mean Gaussian white noise vectors was used and a chi-square distribution variable was made while computing the fading factor. The fading factor was computed by testing each element of the filter residual vector. The result shows that the proposed algorithms can estimate the fading factor adaptively, restrain filtering divergence and has the less computation burden than other algorithms.
Keywords�� Kalman filtering   adaptive filtering   strapdown inertial navigation system   global position system     
Received 2002-12-06;
Fund:

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About author: �����(1971-),��,�����鱦��,��ʿ��, gengyr@sohu.com.
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�����, ������, �ź���, ������.˥����������Ӧ�˲�������ϵ����е�Ӧ��[J]  �������պ����ѧѧ��, 2004,V30(05): 434-437
Geng Yanrui, Cui Zhongxing, Zhang Hongyue, Fang Jiancheng.Adaptive fading Kalman filter with applications in integrated navigation system[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2004,V30(05): 434-437
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