摘要
目标跟踪作为无线传感器网络(WSN)的一项基本应用,已得到广泛研究。提出了一种改进的目标跟踪方法,该方法主要分为邻域检测、目标跟踪和目标修正3个阶段。节点通过获取对于目标的感知信息收益值来实现邻域检测。每个节点通过计算自己的节点权值来决定是否参与目标的跟踪。基于目标的运动趋势,通过发送数据报告来自适应地对目标进行修正。仿真实验表明,该算法减少了参与目标跟踪的节点数,节省了能量,与PM算法相比,该算法提高了目标跟踪的准确率。
Target tracking is a foundational application in wireless sensor networ ks,which has been extensively studied.This paper proposes an improved method o f target tracking;it is divided into such three stages as neighborhood detectio n,target tracking and target amending.Firstly,the node detects the neighborho od areas by getting the information gain value to the target;then each node to decide whether participate to target tracking by calculating the weight of nodes,and finally,based on the moving trend of target,the target is adaptively ame nded by sending the data reports to sink.Simulation results show that the propo sed algorithm reduces the number of nodes involved in target tracking and saving energy,compared with the PM algorithm;this algorithm improves the tracking ac curacy.
出处
《无线电工程》
2012年第4期1-5,共5页
Radio Engineering
关键词
无线传感器网络
目标跟踪
信息收益值
节点权值
目标修正
wireless sensor networks
target tracking
information gain value
node weight
targ et amending
