Abstract
Aiming at the characteristics of the Beidou satellite navigation system (BDS), we introduce a new relative positioning method based on un-differenced observation. Unlike the relative positioning which always uses conventional double-difference approach to eliminate the satellite and receiver side errors and the common errors on the propagation path, this method preprocesses data similar to Precise Point Positioning (PPP) and uses ionosphere-free combination to relative positioning. During this process, one hand satellite clock errors are estimated as unknown parameters and use to establish the relationship between base station and rover, on the other hand ambiguity don’t need to be fixed. The experiment result which based on resolving one week BDS observation data shows, the coordinate accuracy can reach millimeter and centimeter-level precision in horizontal and vertical direction when using this method for relative positioning over thousands of kilometers.
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Acknowledgments
Thanks to the GNSS Research Center of Wuhan University for providing the Compass orbit and clock products. This work was supported by National Natural Science Foundation of China (41274045).
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Pan, Z. et al. (2014). A New Relative Positioning Method Based on Un-differenced BDS Observation. In: Sun, J., Jiao, W., Wu, H., Lu, M. (eds) China Satellite Navigation Conference (CSNC) 2014 Proceedings: Volume III. Lecture Notes in Electrical Engineering, vol 305. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-54740-9_15
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DOI: https://doi.org/10.1007/978-3-642-54740-9_15
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