| 基于LinuxPPS的高精度校时系统实现 |
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| 引用本文： | 于佳,胡柯良,邓元勇,商朝晖.基于LinuxPPS的高精度校时系统实现[J].云南天文台台刊,2012(1):39-45. |
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| 作者姓名： | 于佳 胡柯良 邓元勇 商朝晖 |
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| 作者单位： | 中国科学院国家天文台,北京100012 |
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| 基金项目： | 国家自然科学基金（0911181001,11003027）资助. |
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| 摘 要： | 为了实现南极天文观测设备的精确校时，采用搭建高精度网络时间协议NTP（Network Time Protoc01）服务器的方法实现。基本思路是从NMEA0183数据中提取时间信息，通过PPS信号保证高精度。具体实现方法：主要采用GPS接收芯片G591构造硬件电路，软件部分需要LinuxPPS（Linux Pulse Per Second）和NTP服务器软件的正确安装和配置。对照实验表明基于LinuxPPS的NTP服务器是精确、稳定而可靠的。
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| 关 键 词： | 天文仪器 校时 NTP GPS PPS NMEA 高精度 |
Implementation of a High-Precision Time-Synchronization System Based on the LinuxPPS |
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| Yu Jia,Hu Keliang,Deng Yuanyong,Shang Zhaohui.Implementation of a High-Precision Time-Synchronization System Based on the LinuxPPS[J].Publications of the Yunnan Observatoty,2012(1):39-45. |
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| Authors: | Yu Jia Hu Keliang Deng Yuanyong Shang Zhaohui |
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| Institution: | (Chinese Academy of Sciences, National Astronomical Observatories, Beijing 100012, China ) |
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| Abstract: | In order to precisely calibrate the time introduce a method of building a high-precision NTP settings of astronomical facilities in the Antarctica, we server, which can collect valid timestamps from the NMEA0183 data and keep them to be of high precision using PPS signals. The paper gives the circuit schedules of using the G591 GPS module and also the building steps of the NTP server in details. Three comparative tests show that the NTP server based on the LinrxPPS is precise, stable, and reliable. |
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| Keywords: | Astronomical facilities Time-synchronization NTP GPS PPS NMEA High precision |
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