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

Rongxin Fang; Chuang Shi; Yidong Lou; Qile Zhao

doi:10.1117/12.816265

29 December 2008 Real-time cycle-slip detection of GPS undifferenced carrier-phase measurements

Rongxin Fang, Chuang Shi, Yidong Lou, Qile Zhao

Proceedings Volume 7285, International Conference on Earth Observation Data Processing and Analysis (ICEODPA); 72851U (2008) https://doi.org/10.1117/12.816265
Event: International Conference on Earth Observation Data Processing and Analysis, 2008, Wuhan, China

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.

Citation Download Citation

Rongxin Fang, Chuang Shi, Yidong Lou, and Qile Zhao "Real-time cycle-slip detection of GPS undifferenced carrier-phase measurements", Proc. SPIE 7285, International Conference on Earth Observation Data Processing and Analysis (ICEODPA), 72851U (29 December 2008); https://doi.org/10.1117/12.816265

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