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�������պ����ѧѧ�� 2011, Vol. 37 Issue (8) :1021-1025    DOI:
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������, ���Ǹ�, ����*
�������պ����ѧ ������Ϣ����ѧԺ, ���� 100191
Cycleslips detecting approach for single frequency GPS Users
Gao Shuliang, Huang Zhigang, Li Rui*
School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� Aiming at the detection of the cycle slips in the carrier phase measurements for the single-frequency global pesition system(GPS) users, a novel algorithm was proposed based on the conventional method with the combination of the pseudo range and the carrier phase. The pseudo range and the carrier phase were differentiated between the adjacent epochs and a related detection sequence could be constructed. The real-time estimation of the variance for the detection sequence was accomplished with the elevation exponential model as the conventional method was susceptible to the measurement noise. Finally,a detection variable was formed and the existence of the cycle slips were judged by the comparison between the detection variable and the threshold which is deduced from the hypothetic check theory.The algorithm was verified by the real GPS measurements and the results indicate that the small cycle slips can be detected with the algorithm timely.Moreover,the algorithm is available for the single-frequency GPS users.
Keywords�� cycle slips   detection   hypothetic check   elevation exponential model     
Received 2010-04-23;

����973�ص�����о���չ�滮������Ŀ(2010CB731800); ������Ȼ��ѧ����������Ŀ(60879012/F01); ����863�ƻ�������Ŀ(2006AA12A013,2009AA12Z329)

About author: ������(1982-),��,����������,��ʿ��,gslb-007@163.com.
������, ���Ǹ�, ����.�����ڵ�ƵGPS�û�������̽�ⷽ��[J]  �������պ����ѧѧ��, 2011,V37(8): 1021-1025
Gao Shuliang, Huang Zhigang, Li Rui.Cycleslips detecting approach for single frequency GPS Users[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2011,V37(8): 1021-1025
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2011/V37/I8/1021
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