| 船岸网络时延测量误差原因分析 |
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| 引用本文： | 王益忠,代云超,柏文良.船岸网络时延测量误差原因分析[J].飞行器测控学报,2012(2):35-38. |
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| 作者姓名： | 王益忠 代云超 柏文良 |
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| 作者单位： | 中国卫星海上测控部 |
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| 摘 要： | 简单介绍了测量船船岸通信网络组成,重点介绍了NTP（网络时间协议）和PTP（精密时间协议）这2种网络时间同步协议。针对改建后的船岸网络时延测量误差进行分析和研究,提出基于TWSTFT（卫星双向时间频率传输）技术模型的网络时延测量方法,测量结果误差小于3ms,满足测控任务实时性要求,为提高测控网的测控精度提供有益参考。
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| 关 键 词： | 网络时延 网络时间协议 精密时间同步 卫星双向时间频率传递 |
Analysis of Ship-Bank Network Time Delay Measurement Errors |
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| WANG Yizhong,DAI Yunchao,BAI Wenliang.Analysis of Ship-Bank Network Time Delay Measurement Errors[J].Journal of Spacecraft TT&C Technology,2012(2):35-38. |
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| Authors: | WANG Yizhong DAI Yunchao BAI Wenliang |
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| Institution: | (China Satellite Maritime Tracking & Control Department,Jiangyin,Jiangsu Province 214431) |
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| Abstract: | The paper introduces the composition of a ship-bank communication network with a highlight on NTP(Network Time Protocol) and PTP(Precise Time Protocol) network synchronization protocols.Then,a network delay measurement method based on TWSTFT(Two-Way Satellite Time and Frequency Transfer) model is proposed following analysis and study of ship-bank network delay measurement errors after an upgrade project.The measurement error is smaller than 3 ms,meeting real-time requirements of TT&C missions.The result provides beneficial reference to improvement of TT&C accuracies of TT&C networks. |
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| Keywords: | Network Delay Network Time Protocol(NTP) Precise Time Protocol(PTP) Two-Way Satellite Time and Frequency Transfer(TWSTFT) |
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