Abstract
The performance of on-board atomic clock directly affects the accuracy of navigation and positioning for users. Evaluating the performance of on-board atomic clock is an important part of the construction and monitoring of satellite navigation systems. With the deployment of the Beidou-3, it is necessary to evaluate the performance of the new generation of on-board rubidium atomic clocks and hydrogen atomic clocks carried by Beidou-3 satellites. In this paper, the performance of the on-board atomic clock is evaluated by three indicators: frequency accuracy, drift rate and stability. From the experimental results, the frequency accuracy of Beidou-3 satellites on-board atomic clock is on the order of E-12–E-11, the drift rate of the rubidium clock is on the order of E-13, and the drift rate of the hydrogen clock is on the order of E-14. The stability of days is on the order of E-14, and the stability of the on-board hydrogen clock is on the order of E-15. Compared with the on-board atomic clock, the hydrogen clock is more prone to large phase jumps, but this jump has little effect on the accuracy index.
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Zhang, B., Sun, F., Jia, X., Dai, H., Xiao, K. (2019). Performance Evaluation of Beidou-3 On-Board Atomic Clock. In: Sun, J., Yang, C., Yang, Y. (eds) China Satellite Navigation Conference (CSNC) 2019 Proceedings. CSNC 2019. Lecture Notes in Electrical Engineering, vol 563. Springer, Singapore. https://doi.org/10.1007/978-981-13-7759-4_33
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DOI: https://doi.org/10.1007/978-981-13-7759-4_33
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