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�������պ����ѧѧ�� 2003, Vol. 29 Issue (12) :1136-1138    DOI:
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����, ��׼, ����*
�������պ����ѧ �Զ�����ѧ���������ѧԺ, ���� 100083
Recursive damped least square and its application in INS/DS integrated system
Zhao Long, Liu Zhun, Chen Zhe*
School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� The filtering performance is unsatisfactory while INS/DS (Double-star) integrated navigation system is implemented using Kalman filtering technology, because the model error of double-star system is unknown and the stability is not good, either. As an alternative, the least square(LS)scheme is widely used in practical engineering application. But LS scheme is easy to bring about the problem of parameter burst-off. Therefore, a modified LS scheme based on multi-input-multi-output system, i. e. recursive damped least square (RDLS) scheme, was developed, and be applied to INS/DS integrated navigation system. Simulation results show that the RDLS scheme has the same estimation precision as the recursive least square (RLS) scheme, and furthermore, the parameter burst-off is obviously restricted.
Keywords�� double-star   combinated navigation   recursive damped least square   inertial navigation system     
Received 2002-11-04;


About author: �� ��(1976-),��,���ɹų����,��ʿ��, long760125@sina.com.
����, ��׼, ����.����������С���˼�����INS/˫�������Ӧ��[J]  �������պ����ѧѧ��, 2003,V29(12): 1136-1138
Zhao Long, Liu Zhun, Chen Zhe.Recursive damped least square and its application in INS/DS integrated system[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2003,V29(12): 1136-1138
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