Abstract
The tracking loop performance of low-cost receiver is poor, and the risk of satellite signal loss increases, resulting in frequent carrier phase cycle slip. The conventional satellite-by-satellite cycle slip processing method initializes the carrier phase ambiguity with cycle slip, decreases precise point positioning performance, and may lead to re-initialization. To avoid the degradation of positioning performance and even PPP re-initialization caused by cycle slip processing of the low-cost receiver, we proposed a method of partial cycle slip fixing based on the time-differenced model for low-cost receiver. In this method, the cycle slip subset is selected by quality control, and then the cycle slip is estimated and fixed by the time-differenced observation. The proposed method is verified with collected BDS and GPS dual-frequency data using a u-blox low-cost receiver, and the results show that the method adopted in this paper can correctly fix the cycle slip and achieve rapid PPP re-initialization, and improve the continuity of PPP high-precision positioning results of the low-cost receiver.
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Acknowledgements
This research was jointly funded by the National Key Research and Development Program (No. 2021YFB3901300), the National Natural Science Foundation of China (Nos. 62003109, 61773132, 61633008, 61803115), the 145 High-tech Ship Innovation Project sponsored by the Chinese Ministry of Industry and In-formation Technology, the Heilongjiang Province Research Science Fund for Excellent Young Scholars (No. YQ2020F009), and the Fundamental Research Funds for Central Universities (Nos. 3072019CF0401, 3072020CFT0403).
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Luo, F., Zhao, L., Yang, F., Sun, Z., Zhang, J. (2024). Analysis of Rapid Re-initialization Performance of Precise Point Positioning for Low-Cost Receiver. In: Yang, C., Xie, J. (eds) China Satellite Navigation Conference (CSNC 2024) Proceedings. CSNC 2024. Lecture Notes in Electrical Engineering, vol 1094. Springer, Singapore. https://doi.org/10.1007/978-981-99-6944-9_9
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DOI: https://doi.org/10.1007/978-981-99-6944-9_9
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