摘要
针对高稳定度频标在国民经济发展中有着巨大需求,提出一种基于GPS驯服技术实现的高稳频踪设计方法。与传统的驯服技术相比较,该方法采用数字锁相环加Kalman滤波算法来实现恒温晶振跟踪GPS,综合了GPS秒脉冲的较高长期稳定度和恒温晶振较高短期稳定度的优点,既滤除GPS秒脉冲的随机误差,又解决GPS失锁时恒温晶振无法保持高频率准确度输出问题。结果表明,该方法能够实现了较高的频率准确度和稳定性,输出的频率准确度优于5×10-11,能够用于时间频率的测量基准。
Aiming at high stability frequency synthesizer magnitude necessary for development of national economy,a method of design high stability frequency synthesizer based on GPS tame technnology is presented.＇ Compared with the traditional tame technology,this method adopted DPLL and Kalman filter arithmetic to achieve OCXO tail GPS,this method combined GPS which had high long stability frequency with OCXO which had high short stability frequency,and filter GPS second pulse stochastic error,as well as resolved the problem which could not holding high stability output when GPS invalidation.The rusuh indicates that this method can achieve high precise and stability,frequenee stability is 5×10^-11 ,and can be used for standard of time and frequency measurement reference.
出处
《电子设计工程》
2010年第4期63-65,共3页
Electronic Design Engineering
