Abstract
The traditional real-time precise point positioning (PPP) model uses the satellite absolute clock offset products to achieve high accurate positioning. Precise satellite clock offset can be calculated by non-difference observation model and by epoch difference observation model. Non-difference observation model can directly solve the absolute satellite clock offset. While there are too many ambiguity parameters in the non-difference model which causing the dimensions of normal equation matrix are too large so that the calculation efficiency is lower. The epoch difference observation model eliminates the ambiguity parameters. Although the efficiency is much higher, while it solves the epoch difference of the satellite clock, and when restoring, the absolute clock offset of each epoch must require the initial clock offset. In this paper, a new real-time PPP method is proposed by using the epoch differential observation model, and this method can directly use the satellite clock offset products between epochs to positioning. The experimental results show that the positioning accuracy in both horizontal and elevation direction are better than 3.5 cm.
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References
Huang G (2009) Research on GPS precise point positioning and adjustment of high precision GPS baseline network and the realization of its software. Chang’an University, Xian, p 6
Ren K, Wu X, Jia X (2014) Realtime satellite clock estimation using undifferenced method. In: The 5th China satellite navigation conference—S4 atomic clock technology and time-frequency system
Chang Z, Hu R, Su X (2014) The positioning precision analysis with ionnsphere free combination of regional satellite navigation system. J Geomatics Sci Technol 6(31):557–558
Wan J (2016) Research on fusion algorithm of cycle slip detection and correction for GNSS. Chinese Academy of Surveying and Mapping, Beijing, p 6
Shi Z, Meng X, Guo J (2009) Comparison between modeling method and parameter estimation method in tropospheric delay correction of GPS precise point positioning. Bull Surveying Mapp 6:9–11
He M, Li X, Li P (2011) Comparison and analysis of estimations of precise satellite clock error based on non-difference model and epoch differential model. J Geodesy Geodyn 1(31):95–99
Pan Z, Cai H, Dong B (2015) Real-time GPS precise satellite clock error estimation and precise point positioning. Hydrogr Surveying Charting 5(35):12–15
Song W (2011) Research on real-time clock offset determination and real-time precise point positioning. Wuhan University, Hubei, p 4
Li X, Xu Y, Wang L (2010) Undifferenced precise satellite clock error estimation and precision analysis. Geomatics Inf Sci Wuhan Univ 6(35):661–664
Lou Y, Shi C, Zhou X (2009) Realization and analysis of GPS precise clock products. Geomatics Inf Sci Wuhan Univ 1(34):88–91
Acknowledgements
Thanks to the data support provided by LSN iGMAS Analysis Center of the Information Engineering University.
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Dai, T., Chen, C., Li, J., Pang, P., Li, Y. (2017). A New Method of the Real-Time Precise Point Positioning Based on Epoch Difference of Satellite Clock Offset. In: Sun, J., Liu, J., Yang, Y., Fan, S., Yu, W. (eds) China Satellite Navigation Conference (CSNC) 2017 Proceedings: Volume III. CSNC 2017. Lecture Notes in Electrical Engineering, vol 439. Springer, Singapore. https://doi.org/10.1007/978-981-10-4594-3_22
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DOI: https://doi.org/10.1007/978-981-10-4594-3_22
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