Abstract To test the performance of an under construction time keeping system, we propose a remote evaluation method based on GNSS carrier phase and conduct experimental verification. Taking the national standard time UTC(NTSC) as reference, and based on the GNSS observation data of four stations in Xi’an and Beijing for a continuous 15 days, we use PPP and carrier phase common-view(PCV) methods to calculate the time deviation of time keeping system relative to UTC(NTSC). Then, we analyze the relative frequency deviation and frequency stability of time keeping system. The results show that the system error of PCV and PPP time transfer links is small, and the accuracy of time transfer is high. The PCV and PPP time transfer can accurately measure the frequency stability and relative frequency deviation of time keeping systems that are far away from each other. The research results can lay a solid foundation for the remote evaluation of time keeping system performance.
SHI Minlin,ZHANG Xiangbo,ZHAO Dang et al. Remote Evaluation Method of Time Keeping System Performance Based on GNSS Carrier Phase[J]. jgg, 2024, 44(3): 251-256.
SHI Minlin,ZHANG Xiangbo,ZHAO Dang et al. Remote Evaluation Method of Time Keeping System Performance Based on GNSS Carrier Phase[J]. jgg, 2024, 44(3): 251-256.
