摘要
高精度原子频率标准可提供精确、统一的频率和时间信号,具有优良的频率准确度和长期稳定性,已经广泛应用于载人航天、卫星发射、电子对抗、导航定位、无线通信、雷达探测、时间频率测量等领域。优良的标频处理技术可以将原子频标的长稳特性与恒温晶振的短稳低噪性能相结合,实现稳定度更高、相位噪声更低的标频信号,进一步提高原子频标的指标性能,为用时、用频设备的高性能工作提供更优质的保障。
High precision atomic frequency standardcan provideaccurate and unified frequency and time signals.With high-accuracy frequency and long-term stability,they have beenwidely applied in various fields including manned spaceflight,satellite launch,electroniccountermeasures,navigation and positioning,wireless communication,radar detection,time and frequency measurement.The excellentprocessingtechnology of standard frequencycombines the long-term stability of the atomic frequency standard with the short-term stability and low-noise performance of the constant temperature crystal oscillator,which achieves the standard frequency signal with higher stability and lower phase noise.It can further improve the index performance of the atomic frequency standard,and provide high quality guarantee for the excellent performance of the equipment in need of accurate time and frequency.
作者
徐远清
周冬冬
王闯利
周昊
XuYuanqing;Zhou Dongdong;Wang Chuangli;Zhou Hao
出处
《通信与广播电视》
2020年第1期7-14,共8页
Communication & Audio and Video
关键词
原子钟
恒温晶振
相位噪声
锁相环
Atomic clock
Oven controlledcrystal oscillators
Phase noise
Phase-locked loop