Abstract
Integration of multi-constellation GNSS creates a significant increase in the number of visible satellites, thus bring new opportunities for improving the accuracy and reliability of Real Time Kinematic (RTK) positioning. This paper proposes a reliable RTK positioning method based on partial wide-lane ambiguity resolution (AR) from GPS/GLONASS/BDS (G/R/C) combination. It takes advantage that wide-lane observation has much longer wavelength, and the multi-constellation combined wide-lane ambiguity-fixed observations are directly used to positioning calculation. In the paper, the G/R/C geometry-based wide-lane ambiguity resolution models are unified and combined. Then a partial ambiguity resolution (PAR) method is introduced to avoid the influence of extreme errors from low-elevation satellites. A set real G/R/C baseline data is used as typical example to reflect the benefits of the proposed method. Experiment results show that the multi-constellation combination can significantly improve the wide-lane AR effects, including the AR success rate, ratio and initialization speed. And the proposed PAR method can effectively avoid the negative influence of new-rising satellites. The positioning accuracy using the proposed method can still reach centimetre level.
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Acknowledgments
This work is supported by the Key Projects in the National Science & Technology Pillar Program during the Twelfth Five-year Plan Period (No. 2012BAJ23B01). The authors are very grateful to the anonymous reviewers for their constructive comments and suggestions.
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Gao, W., Gao, C., Pan, S., Yang, Y., Wang, D. (2015). Reliable RTK Positioning Method Based on Partial Wide-Lane Ambiguity Resolution from GPS/GLONASS/BDS Combination. In: Sun, J., Liu, J., Fan, S., Lu, X. (eds) China Satellite Navigation Conference (CSNC) 2015 Proceedings: Volume II. Lecture Notes in Electrical Engineering, vol 341. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-46635-3_38
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DOI: https://doi.org/10.1007/978-3-662-46635-3_38
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