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�������պ����ѧѧ�� 2008, Vol. 34 Issue (04) :377-380    DOI:
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Integrated heading system based on differential magnetic compasses
Hao Zhenhai, Huang Shengguo*
School of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

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Abstract�� To solve the magnetic compass interference problem caused by the dynamic interference magnetic field in urban traffic environment, the feature of the dynamic magnetic interference was analyzed. And the concept of the differential magnetic compasses(DMC) was proposed. An integrated heading system module based on the DMC and the rate gyroscope was designed. The dynamic interference recognition technology of DMC based on the judgment of the threshold value was investigated. The agreement of the theoretical analysis with the real navigation experimental results shows that the DMC can recognize the dynamic magnetic interferences better, compared with single compass. The application range of the magnetic compass in the urban traffic environment is extended. The robust and the precision of the integrated heading system are also improved.
Keywords�� dynamic magnetic interferences   differential magnetic compasses   rate gyroscope   navigation     
Received 2007-04-04;
Fund:

863�ƻ�������Ŀ(2006AA12A108)

About author: ����(1977-),��,�����Ͼ���,��ʿ��, haradona@126.com.
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����, ��ʥ��.���ڲ�ִ����̵���Ϻ���ϵͳ[J]  �������պ����ѧѧ��, 2008,V34(04): 377-380
Hao Zhenhai, Huang Shengguo.Integrated heading system based on differential magnetic compasses[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2008,V34(04): 377-380
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2008/V34/I04/377
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