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Proceedings Paper

Real-time cycle-slip detection of GPS undifferenced carrier-phase measurements
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Paper Abstract

Real-time high-precision GPS positioning and navigation requires that cycle-slip in the undifferenced carrier-phase measurements can be detected instantaneously. A slip of only a few cycles can bias measurements enough to make centimeter-level positioning or navigation difficult. Over the past decade a number of methods have been developed to detect and repair cycle slips. The majority of methods invariably are used in the post-processing cycle-slip detection. A method has been developed from various exiting techniques, that provides real-time cycle-slip detection (i.e., using only current epoch's GPS carrier-phase measurements). The approach utilizes two linear combinations, the Geometry-free and the Melbourne-Wübbena combination. The low degree polynomial fitting and running-average filter are used to detect cycle slips. Simulation tests are conducted to the kinematic data. Results indicate that single-cycle slips can be reliably detected instantaneously.

Paper Details

Date Published: 29 December 2008
PDF: 7 pages
Proc. SPIE 7285, International Conference on Earth Observation Data Processing and Analysis (ICEODPA), 72851U (29 December 2008); doi: 10.1117/12.816265
Show Author Affiliations
Rongxin Fang, Wuhan Univ. (China)
Chuang Shi, Wuhan Univ. (China)
Yidong Lou, Wuhan Univ. (China)
Qile Zhao, Wuhan Univ. (China)


Published in SPIE Proceedings Vol. 7285:
International Conference on Earth Observation Data Processing and Analysis (ICEODPA)
Deren Li; Jianya Gong; Huayi Wu, Editor(s)

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