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原子频标目前已成为高精度卫星导航定位系统建立的基础,本文在概述各种频率源性能的基础上,重点介绍以原子频标为基础的时频系统在卫星导航定位系统中的应用,分析了不同的时频系统中原子频标与定位精度之间的关系,并以此为我国的下一代卫星导航定位系统时频系统的确立提供可借鉴的思路。
Atomic frequency standard has now become the basis for the establishment of high-precision satellite navigation and positioning system. Based on an overview of the performance of various frequency sources, this paper mainly introduces the application of time-frequency system based on atomic frequency standard in satellite navigation and positioning system. The relationship between the atomic frequency standard and the positioning accuracy in different time-frequency systems is provided, which can provide reference for establishing the time-frequency system of next-generation satellite navigation and positioning system in China.