完全分布式无线传感网中的声源定位与跟踪
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摘要
无线传感网中的每个传感器节点用于无线通信与计算的能量都是有限的.因此,如何有效地减少传感器节点的能量消耗是一个值得研究的问题.为了大幅度减少能量消耗,在本篇文章中,提出了完全分布式EM算法用于无线传感网中的声源定位与跟踪.此算法仅需局部的数据传输与简单的计算.每个传感器节点仅需将其检测到的能量值传输到其单跳范围内的邻居节点,同样也会接收来自单跳范围内的邻居节点检测到的数据,这样就有效地避免了远距离的无线传输,达到大量减少能量消耗的目的.完全分布式EM算法在定位精度与能量消耗方面提供了一个很好的折中,有关静态声源定位与动态声源跟踪的大量仿真实验验证了此算法的可行性.
引文
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[2]Li D,Wong K D,Hu Y H.Detection,classification,and tracking of targets[J].IEEE signal processing magazine,2002,19(2):17-29.
[3]邵怀宗,林静然,彭启琼.基于麦克风阵列的声源定位技术研究[J].云南民族大学学报,2004(10):1-14.
[4]何风行,余志军.基于RSS的WSN多目标定位压缩感知算法优化[J].南京邮电大学学报,2012(8):24-28.
[5]Sheng X,Hu Y H.Energy based acoustic source localization[C].Information Processing in Sensor Networks.Springer,Berlin,Heidelberg,2003:285-300.
[6]Sheng X,Hu Y H.Maximum likelihood multiple-source localization using acoustic energy measurements with wireless sensor networks[J].IEEE Transactions on Signal Processing,2005,53(1):44-53.
[7]Meng W,Xiao W,Xie L.An efficient EMalgorithm for energy-based multisource localization in wireless sensor networks[J].IEEETransactions on Instrumentation and Measurement,2011,60(3):1017-1027.
[8]Liu Y,Hu Y H,Pan Q.Distributed,robust acoustic source localization in a wireless sensor network[J].IEEE Transactions on signal processing,2012,60(8):4350-4359.
[9]Feng Y,Huang Q.Fully distributed acoustic source localization in wireless sensor network[C].TENCON 2013 IEEE Region 10 Conference(31194).IEEE,2013:1-4.
[10]Heinzelman W R,Chandrakasan A,Balakrishnan H.Energy-efficient communication protocol for wireless microsensor networks[C].System sciences,2000.Proceedings of the33rd annual Hawaii international conference on.IEEE,2000:10 pp.vol.2.
[11]Heinzelman W B,Chandrakasan A P,Balakrishnan H.An application-specific protocol architecture for wireless microsensor networks[J].IEEE Transactions on wireless communications,2002,1(4):660-670.