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�������պ����ѧѧ�� 2002, Vol. 28 Issue (3) :261-264    DOI:
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Cost Function Based Map Matching Algorithm for GPS/DR Integrated Navigation Systems
PENG Fei, LIU Zhong-kan, ZHANG Qi-shan*
Beijing University of Aeronautics and Astronautics, Dept. of Electronic Engineering

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Abstract�� Map-matching is an effective way of improving location accuracy of vehicle location and navigation systems. By analyzing the application of map-matching method in GPS/DR integrated navigation systems, a GPS/DR/Map-matching integrated system model and a cost function based probabilistic map-matching algorithm are proposed. Emphasis was put on how to eliminate the ambiguity in finding map-matching resolution by evaluating a cost function for each correction over time. Simulation results show that, by introducing this algorithm, the positioning performance of integrated navigation system can be improved significantly.
Keywords�� vehicular ground navigation system   combinated navigation   information processing   map-matching   cost function     
Received 2000-07-18;
About author: �� ��(1973-),��,����������,��ʿ��,100083,����.
���, ���ؿ�, ������.���ڴ��ۺ�������ϵ���ϵͳ��ͼƥ���㷨[J]  �������պ����ѧѧ��, 2002,V28(3): 261-264
PENG Fei, LIU Zhong-kan, ZHANG Qi-shan.Cost Function Based Map Matching Algorithm for GPS/DR Integrated Navigation Systems[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2002,V28(3): 261-264
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