从瞬态到全域稳定度的测量方法进步  

Advances in measurement methods from transient to full stability

作　　者：白丽娜[1] 王一妃 周渭[1] 黄李贝 王远 BAI Lina;WANG Yifei;ZHOU Wei;HUANG Libei;WANG Yuan(School of Mechano-electronic Engineering,Xidian Univ.,Xi an 710071,China)

机构地区：[1]西安电子科技大学机电工程学院

出　　处：《西安电子科技大学学报》2019年第3期8-13,共6页Journal of Xidian University

基　　金：国家自然科学基金(11773022),陕西省重点研发计划(2018ZDXM-GY-025);西安市科技计划(2017073CG/RC036(XDKD002);卫星导航系统与装备技术国家重点实验室开放基金(CEPNT-2017KF-03)

摘　　要：将边沿效应推广到数字领域,利用数字边沿结合数字鉴相算法得到瞬态频率稳定度,将瞬态稳定度从10-4每百纳秒提高到10-5每百纳秒,解决了模拟相位重合检测技术存在的对硬件线路要求过高、设备漂移、无法扩展到全域稳定度等问题。数字方式可在瞬态稳定度的基础上扩展到短期及中、长期稳定度,从根源和影响效果等方面对频率源相位噪声进行更全面的描述。In this paper, the edge effect is extended to the digital domain. The digital edge is combined with the digital phase discrimination algorithm to obtain the transient frequency stability, the transient stability increased from 10 -4 /100 ns to 10 -5 /100 ns.The invention solves the problems that the analog phase coincidence detection technology has high requirements for the hardware circuit, that the device has drifts, and that the technology cannot be extended to the global stability. The digital method can be extended to short-term, medium-and long-term stability based on transient stability, and a more comprehensive description of frequency source phase noise from the aspects of root cause and effect can be given.

关 键 词：瞬态稳定度 相位重合检测 数字边沿效应 

分 类 号：TM935.12[电气工程—电力电子与电力传动]