【作者】 张帆； 胡永辉； 何在民；

【Author】 ZHANG Fan 1,2,3 ,HU YongHui 1,2 ,HE ZaiMin 1,2,3 1.National Time Service Center,Chinese Academy of Sciences,Xi’an 710600,China; 2.Key Laboratory for Precision Navigation and Timing Technology,Chinese Academy of Sciences,Xi’an 710600,China; 3.Graduate University of the Chinese Academy of Sciences,Beijing 100039,China

【机构】 中国科学院国家授时中心； 中国科学院精密导航定位于定时技术重点实验室； 中国科学院研究生院；

【摘要】 设计了一种基于GPS(Global Position System)可驯钟。采用滑动中位数滤波去除测量数据中的奇异值,并利用ARMA(Auto Regressive and Moving Average)对时差数据进行滤波以抑制测量噪声,提出了一种改进型的压控电压产生方案。对准确度为1×10-9恒温晶振进行驯服,驯服后频率准确度优于2×10-11,该方法可推广应用于北斗或其它卫星导航系统可驯钟研究。更多还原

【Abstract】 A GPS(Global Position System)disciplined clock is designed.A moving median filter is adopted to remove the regular values,ARMA(Auto Regressive and Moving Average)is used to filter measurement noise of difference time sequence,and an improved method of voltage-controlled is proposed.The frequency accuracy of a constant temperature crystal oscillator which is 1×10 -9 will be better than 2×10 -11 after it is disciplined.this method can be applied in disciplined clock research of BeiDou or other navigation system.更多还原