Abstract
As the pseudorange differential positioning accuracy of single base station decreases with the increase of differential measurement residual errors, it is difficult to realize decimeter-level positioning in long-range real-time positioning. In this study, we propose a decimeter-level pseudorange positioning approach that combines multiple global navigation satellite system (multi-GNSS) and multi-base stations into an enhanced positioning solution to improve the positioning performance. The approach calculates the pseudorange corrections based on multi-GNSS and multi-base stations, and generates one fused pseudorange correction for rover by different interpolation models. The fused pseudorange correction is broadcasted to rover, and the measurements of rover are modified for the final positioning. The experiments based on Hong Kong SatRef network are carried out and the results have shown that the proposed method can achieve decimeter-level positioning accuracy in the medium baseline case. The positioning accuracy can be affected by the interpolation model and the number of base stations. The increase number of base stations can effectively improve the positioning accuracy.
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Acknowledgements
This research is supported by the National Natural Science Funds of China (Nos. 61803115, 61773132, 61633008). The GPS and BDS data sets collected for experiment from Hong Kong Satellite Positioning Reference Station Network (SatRef) were used in this study, which is acknowledged.
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Li, H., Wang, R., Li, N., Feng, W., Zhao, L. (2022). Decimeter-Level Pseudorange Differential Positioning Based on Hong Kong SatRef Network. In: Yan, L., Duan, H., Yu, X. (eds) Advances in Guidance, Navigation and Control . Lecture Notes in Electrical Engineering, vol 644. Springer, Singapore. https://doi.org/10.1007/978-981-15-8155-7_3
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DOI: https://doi.org/10.1007/978-981-15-8155-7_3
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