精密频率与相位调整方法Precision frequency and phase adjustment method
王超,李世光,夏振华,于航,党明朝,毛新凯
摘要(Abstract)：
精密频率与相位调整技术是守时系统的关键技术。利用直接数字频率合成(DDS)引入精密频率与相位调整量,通过锁相环将DDS输出锁定于本地恒温晶振OCXO,在锁相环中通过分频和两级频差倍增提升频率和相位调整分辨率,环路锁定后的OCXO输出即频率和相位精密微调后的信号。设计了基于相位比对的频率和相位调整分辨率测试系统,实验结果表明,精密频率与相位调整系统的频率调整分辨率达到了4×10-17,相位调整分辨率达到了6 fs。
关键词(KeyWords)： 守时系统;直接数字频率合成;频差倍增;频率与相位调整;相位比对;锁相环
基金项目(Foundation):
作者(Author): 王超,李世光,夏振华,于航,党明朝,毛新凯
DOI: 10.16652/j.issn.1004-373x.2018.07.030
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