Abstract
Five new-generation BeiDou global experimental satellites (BDS-3) have been launched into inclined geosynchronous orbit (IGSO) and medium orbit (MEO) since March 2015. The quality of observation data has a direct impact on the performance of navigation, positioning and timing service. Therefore, it is very important to analyze the observation data quality of new-generation BDS satellites, for evaluating the service performance of BDS-3. In this paper, the practical observation data of 16 iGMAS stations and 6 MGEX stations from 21 August to 20 September 2017 are selected, because they can receive the observation data of BDS-3, BDS-2 (BeiDou regional navigation system) and GPS (Global Positioning System). The observation data quality of BDS-3, BDS-2 and GPS are analyzed and compared, including the data integrity rate, multipath, signal-to-noise ratio (SNR), ionospheric delay and cycle slip ratio. The results show that the data integrity rate on the B1 and B3 frequency of BDS-3 and BDS-2 are at the same level. The SNR of BDS-3 are outperformed that of BDS-2. The multipath error and the ionospheric delay error of BDS-3 are slightly better than those of BDS-2. And the cycle slip ratio of BDS-3 is similar to that of BDS-2. Therefore, the new-generation BDS-3 satellites can meet the normal working requirements and the data quality of BDS-3 is better than that of BDS-2 in general.
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Acknowledgements
This paper was supported by the National Science Foundation of China (Grant No. 41404033), the National Science and Technology Basic Work (Grant No. 2015FY310200). And thanks the International GNSS Monitoring and Assessment Service (iGMAS) and the International GNSS Service (IGS) for the data and products.
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He, Y., Wang, Q., Wang, Z., Mao, Y. (2018). Quality Analysis of Observation Data of BeiDou-3 Experimental Satellites. In: Sun, J., Yang, C., Guo, S. (eds) China Satellite Navigation Conference (CSNC) 2018 Proceedings. CSNC 2018. Lecture Notes in Electrical Engineering, vol 498. Springer, Singapore. https://doi.org/10.1007/978-981-13-0014-1_24
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DOI: https://doi.org/10.1007/978-981-13-0014-1_24
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