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- W2289538419 abstract "In a navigation satellite system, the two-way satellite time and frequency transfer (TWSTFT) is mainly used for time synchronization at earth stations, and system time tracing, etc. The reason why the TWSTFT can realize high-precision time synchronization is its path symmetry; however, in practical applications, satellite motion leads to a deviation from the distance between base station and satellite and a time synchronization error between two base stations, which affect the path symmetry of the TWSTFT and further influence the precision of two-way satellite time synchronization. In this paper, the calculation method of the two-way time synchronization error caused by satellite motion was studied, and the influence of satellite motion on the precision of two-way time synchronization was analyzed for three base stations, i.e., Sanya, Chengdu and Kashi, selected at low, medium and high latitudes, respectively, with Beijing station as a reference station, using the orbital data of different satellites on one day. In the two-way time synchronization technology research for and construction of the BeiDou Navigation Satellite System, if geosynchronous earth orbit (GEO) satellites are used for two-way time transfer with precision of 1 ns, the influence of satellite motion can be neglected; however, if it is expected to realize time comparison with higher precision or to use satellites with faster motion velocity, the research results from this paper will have important reference function." @default.
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- W2289538419 date "2015-01-01" @default.
- W2289538419 modified "2023-09-22" @default.
- W2289538419 title "Analysis of Two-way Time Synchronization Error Caused by Satellite Motion" @default.
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- W2289538419 doi "https://doi.org/10.2991/icmmita-15.2015.203" @default.
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