基于GNSS接收机的标准时钟设计  

Design of standard clock based on GNSS receiver

作　　者：谢亮[1,2] 芦旭[1,2] 段建文[1,2] 蒙智谋 Xie Liang;Lu Xu;Duan Jianwen;Meng Zhimou(National Time Service Centre,Chinese Academy of Sciences,Xi＇an 710600,China;Department of Timing,National Time Service Centre,Pucheng 715500,China)

机构地区：[1]中国科学院国家授时中心,西安710600 [2]中国科学院授时部,蒲城715500

出　　处：《电子测量技术》2018年第11期31-34,共4页Electronic Measurement Technology

摘　　要：为满足授时时钟钟面时间比对的需要,利用北斗/GPS双系统导航/授时模块UM220-Ⅲ作为时间基准,完成了一种高精度标准时钟的设计与实现。设计由软硬件构成,硬件完成基本电路设计,重点给出了授时模块UM220-Ⅲ的外围电路设计方法,解码电路硬件组成等;软件实现解码和显示,授时模块输出的时间码判定有效则作为标准时间初始值,1PPS作为标准时间控制信号。通过实验,该设计实现了以授时模块UM220-Ⅲ为时间源的标准时钟,测试结果表明,该时钟能够作为无线电授时时钟的参考比对时钟。For the needs of the clock face time comparison,using the Beidou/GPS dual system navigation/timing module UM220-Ⅲ as the time reference designed and completed a high precision of the standard clock.The design is composed of hardware and software,hardware completed the basic circuit design,the peripheral circuit design method of UM220-Ⅲ timing module as the focus are given,decoding circuit hardware;the software decoding and display,timing module output time code as the standard time to determine the initial value if effective,1 PPS as the standard time control signal.Through experiments,the design realizes the standard clock with time module UM220-Ⅲ as the time source.The test results show that the clock can be used as reference clock for the radio time clock.

关 键 词：UM220-Ⅲ 授时 解码 

分 类 号：TN742[电子电信—电路与系统]