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�������պ����ѧѧ�� 2009, Vol. 35 Issue (5) :551-554    DOI:
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Modeling of GPS multi-path signals and receiver testing
Yang Wei, Zhao Yun, Kou Yanhong, Huang Zhigang*
School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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ժҪ �ྶ�ź������GPS(Global Positioning System)���������ǵ���ϵͳ����Ҫ���Դ֮һ,�йضྶ��ģ��ྶ��������һֱ�����ǵ���������о��ȵ�.���ݶྶ�ź�����,�Ƶ��˶�GPS��λ����Ӱ�����ľ��淴��ྶ�ź�ģ��.������һ�ྶģ��,����GPS������ջ������˶ྶ�Խ��ջ�α��������ȵ�Ӱ��.���Խ����֤���������Ķྶģ�͵���Ч��,����õĶྶ�������Ϊխ��ضྶ���Ƽ����ṩ��ʵ��֧��.
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Abstract�� The multi-path effect is one of the most important sources of positioning errors for global positioning system (GPS) and other satellite navigational systems. Multi-path signal modeling and its mitigation techniques have always been hot spots in the satellite navigation research direction. According to the multi-path signals nature, a specular reflection multi-path model was proposed, due to the influence of the specular reflections on GPS positioning accuracy more noticeable in comparison with other multi-path reflections. The pseudo-range measurement error of the GPS software receiver caused by the multi-path signals was tested. In the test, the multi-path signals were generated by this specular reflection model. The test results show that the pseudo-range error changes caused by the multi-path signals act in accord with the theoretical analysis curves.
Keywords�� global positioning system   multi-path signal model   pseudo-range error   correlation space     
Received 2008-08-10;
Fund:

����863�ƻ�������Ŀ(2007AA12Z302)

About author: �� ΰ(1982-),��,����������,˶ʿ��,shwy8237@sina.com.
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�� ΰ, �� ��, ���޺�, ���Ǹ�.GPS�ྶ�źŽ�ģ�����ջ���������[J]  �������պ����ѧѧ��, 2009,V35(5): 551-554
Yang Wei, Zhao Yun, Kou Yanhong, Huang Zhigang.Modeling of GPS multi-path signals and receiver testing[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2009,V35(5): 551-554
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