利用相位群处理的铷原子钟频率链接原理  

Principle research on the frequency chain of the rubidium atomic clock based on group phase processing

作　　者：苗苗[1] 周渭[1] 李智奇[1] 张雪萍[1] 鲁伟昊 

机构地区：[1]西安电子科技大学机电工程学院,陕西西安710071

出　　处：《西安电子科技大学学报》2015年第1期112-117,共6页Journal of Xidian University

基　　金：国家自然科学基金资助项目(10978017;61201288);基本科研业务费资助项目(K5051304019;K505130402)

摘　　要：针对原子钟内存在大量的倍频等信号处理环节,影响了铷频标的短期稳定度指标的问题,利用相位群同步和群连续的原理,通过广义相位处理的频率链接方法来改造原子钟的系统结构.广义相位处理的频率链接方法是推广至不同频率信号比对中的相位差测量方法,相比之下,文中方案简化了系统的频率变换线路,减少了复杂的频率变换线路所引入的相位噪声.通过结构简单的相位群同步实现锁相控制,使原子钟兼顾良好的长短稳指标和相位噪声指标.The rubidium atomic clock is most commonly used. The traditional circuit scheme usually adopts the comparison of the same frequency signals as a closing loop. Due to the existence of many frequency multipliers, the short stability of the rubidium clock is changing. Based on the principle of phase group synchronization and phase group continuation, the construction of the clock is improved by the frequency link in the generalized phase processing. The frequency link method in the generalized phase processing is spreading into the phase measurement between different frequency signals. Compared with the traditional method, the scheme simplifies the frequency transforming circuit and decreases the phase noise from them. With the simple construction the phase group synchronization improves the stability and reduces the phase noise.

关 键 词：原子钟 频率链接 相位群同步 

分 类 号：G306.0[文化科学]