CAJ | 학술논문

时间频率系统是卫星导航系统的重要组成部分，国内外的卫星导航系统均采用原子钟组作为频率源。介绍了国内导航系统频率源的同步与控制方案，采用国产原子钟和主备原子钟的冗余设计，分别利用相位同步控制法和频率同步控制法进行相位同步控制和频率同步控制。对方案中存在的两个问题，主备钟切换时相位跳变和原子钟跳频时不易被发现，提出了解决方法。对提高导航频率源的稳定度和准确度，有一定的工程指导意义。
시간빈솔계통시위성도항계통적중요조성부분，국내외적위성도항계통균채용원자종조작위빈솔원。개소료국내도항계통빈솔원적동보여공제방안，채용국산원자종화주비원자종적용여설계，분별이용상위동보공제법화빈솔동보공제법진행상위동보공제화빈솔동보공제。대방안중존재적량개문제，주비종절환시상위도변화원자종도빈시불역피발현，제출료해결방법。대제고도항빈솔원적은정도화준학도，유일정적공정지도의의。
Time frequency system is one of the important parts of satellite navigation system ,domestic and international satellite navigation systems are using atomic clocks group as frequency source .The article introduces synchronization and control methods of frequency source of domestic satellite navigation system .Frequency source of domestic navigation sys‐tem adopt redundancy design by using domestic atomic clocks and the main case atomic clocks .Using synchronous control method to phase the synchronization control and using frequency control method to phase the frequency control .But two problems exist ,it will oc‐cur phase hopping when switching between the main clock and the standby clock ,and atomic frequency hopping is not easy to be identified ,the article brings forword ways to solve the problems .There are some engineering significance to improve the stability and accuracy of the entire time frequency system .