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�������պ����ѧѧ�� 2004, Vol. 30 Issue (07) :640-643    DOI:
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ׯ����, ����, ������, ��Ծ��*
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Lead and lag correction in vehicle navigation system
Zhuang Chaowen, Fu Li, Teng Jitao, Fan Yuezu*
School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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ժҪ �����˳�������ϵͳ�г�ǰ�ͺ������ԭ��,��������õ�ͼƥ��MM(Map Matching)����GPS(Global Positioning System)/DRS(Dead Reckoning System)��ϵ���ϵͳ��ǰ�ͺ�У���ķ���.�÷����ǽ���ǰ�ͺ������ΪGPS���,������GPS�ص�·��ֱ���������Ŀɹ۲��Խ���GPS���У��,�ٽ�У����GPS��Ϣ��DRS��Ϣ���п������˲�,�Ӷ�������ϵ���ϵͳ��ǰ�ͺ����.����������������������֮��Ч��.
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Abstract�� The reasons were analyzed ,which caused lead and lag errors in vehicle navigation system. A new method was proposed, which using map matching(MM)to correct lead and lag errors in global positioning system/dead deckoning system(GPS/DRS) integrated navigation system. The method made lead and lag errors boil down to GPS errors, which could be emendated by map data on the basis of the observability of GPS errors along the vertical direction . A general Kalman filtering was constructed to process the information of corrected GPS and DRS later, which decreased lead and lag errors in the integrated navigation system. Experimental results show the effectiveness of the proposed method��
Keywords�� integrated navigation   Kalman filtering   map matching   global positioning system   lead and lag correction     
Received 2003-04-10;
About author: ׯ����(1978-),��,�㶫������,˶ʿ��, zcwl24@sina.com.
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ׯ����, ����, ������, ��Ծ��.��������ϵͳ�г�ǰ�ͺ�У������[J]  �������պ����ѧѧ��, 2004,V30(07): 640-643
Zhuang Chaowen, Fu Li, Teng Jitao, Fan Yuezu.Lead and lag correction in vehicle navigation system[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2004,V30(07): 640-643
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2004/V30/I07/640
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