[1]杨玉景,黄艺文,李太华,等.多跳无线传感器网络下基于KF优化的PTP协议[J].智能系统学报,2014,9(2):174-179.[doi:10.3969/j.issn.1673-4785.201310025]
YANG Yujing,HUANG Yiwen,LI Taihua,et al.Precision time protocol (PTP) on the basis of Kalman filtering in the multi-hop wireless sensor network[J].CAAI Transactions on Intelligent Systems,2014,9(2):174-179.[doi:10.3969/j.issn.1673-4785.201310025]
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YANG Yujing,HUANG Yiwen,LI Taihua,et al.Precision time protocol (PTP) on the basis of Kalman filtering in the multi-hop wireless sensor network[J].CAAI Transactions on Intelligent Systems,2014,9(2):174-179.[doi:10.3969/j.issn.1673-4785.201310025]
多跳无线传感器网络下基于KF优化的PTP协议
《智能系统学报》[ISSN 1673-4785/CN 23-1538/TP] 卷:
9
期数:
2014年第2期
页码:
174-179
栏目:
学术论文—智能系统
出版日期:
2014-04-25
- Title:
- Precision time protocol (PTP) on the basis of Kalman filtering in the multi-hop wireless sensor network
- Keywords:
- wireless senor network; PTP; Kalman filter; multi-hop wireless network; time synchronization; synchronization noise
- 分类号:
- TP393
- 摘要:
- 保持各节点时间上的同步在分布式系统中具有十分关键的地位,是保证各节点间协同工作,处理数据正确和传输可靠的前提。无线传感器网络的时间同步,由于获取精确时钟戳难度大、传输延迟抖动明显等问题,导致精度不够。针对无线传感器网络低功耗的特点及对时钟同步算法精度的要求,提出了一种基于卡尔曼滤波器优化的IEEE 1588 PTP时间同步方法,研究了无线网络中PTP的性能与时间戳精度之间的关系,在单跳同步实验基础上,将同步网络拓展到多跳,以验证不同协议模式下的多跳同步性能。仿真结果表明,针对不同时钟标记的不确定性,基于卡尔曼滤波器优化的PTP协议能够较好地滤除同步噪声,抑制同步误差的传递,在保持同步精度的前提下适用于更大规模的无线传感器网络。
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备注/Memo
收稿日期:2013-10-10。
基金项目:国家自然科学基金资助项目(61101135);西南大学基本科研业务费专项资金资助项目(XDJK2012C065)
作者简介:杨玉景,女,1987年生,硕士研究生,主要研究方向为无线传感器网络。黄艺文,女,1989年生,硕士研究生,主要研究方向为无线传感器网络。
通讯作者:李太华,男,1977年生,副教授,硕士研究生导师.主要研究方向为智能信息处理,无线传感器网络。E-mail:catalyst@swu.edu.cn.
更新日期/Last Update:
1900-01-01