| 时间异步无线传感器网络的分布式目标跟踪 |
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| 引用本文： | 万江文,薛皓,于宁,陈斌.时间异步无线传感器网络的分布式目标跟踪[J].高技术通讯,2009,19(10). |
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| 作者姓名： | 万江文 薛皓 于宁 陈斌 |
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| 作者单位： | 1. 北京航空航天大学仪器科学与光电工程学院,北京,100191
2. 北京邮电大学计算机学院,北京,100876 |
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| 基金项目： | 国家自然科学基金，863计划，北京市教育委员会共建资助项目 |
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| 摘 要： | 为了降低无线传感器网络在目标跟踪过程中的网络能耗,提出了一种时间异步条件下的分布式目标跟踪方法.首先,依据节点到目标的距离进行动态成簇,以跟踪簇为时间的计算单元,由簇头完成簇内跟踪时间计算及簇间贯序传递,然后引入并行粒子滤波(PPF)算法将粒子集分为多个子集,在子节点处并行采样、计算权重和重采样,最后,簇头节点收集各子节点上传的结果并完成目标的局部状态估计.仿真结果表明,PPF算法具有较好的跟踪精度,且相比于集中式粒子滤波(CPF)算法,可降低约38%的通信量.
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| 关 键 词： | 无线传感器网络(WSN) 目标跟踪 时间异步 并行粒子滤波(PPF) |
Distributed target tracking in asynchronous wireless sensor networks |
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| Wan Jiangwen,Xue Hao,Yu Ning,Chen bin.Distributed target tracking in asynchronous wireless sensor networks[J].High Technology Letters,2009,19(10). |
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| Authors: | Wan Jiangwen Xue Hao Yu Ning Chen bin |
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| Affiliation: | Wan Jiangwen,Xue Hao~*,Yu Ning,Chen bin~*(School of Instrument Science and Opto-electronics Engineering,Beijing University of Aeronauticsand Astronautics,Beijing 100191)( * School of Computer Science and Technology,Beijing University of Posts and Telecommunications,Beijing 100876) |
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| Abstract: | To reduce the energy consumption of wireless sensor networks during their target tracking,a distributed target track- ing method suited to the condition of time asynchronous was proposed.Firstly,dynamic clusters were established accord- ing to the distance between each node and the target.The tracking cluster was used as the calculation unit of time.The tracking time calculation in one cluster and sequential transferring among different clusters were implemented by cluster headers.Then,the particle set was ... |
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| Keywords: | wireless sensor network(WSN) target tracking asynchronous parallel particle filter(PPF) |
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