一种无线传感器网络中的信息驱动节点选择机制

被引:4
作者
刘雨
望育梅
张琳
机构
[1] 北京邮电大学信息工程学院
关键词
传感器网络; 信息驱动的节点选择机制; 卡尔曼滤波; 信息效用函数;
D O I
暂无
中图分类号
TN929.5 [移动通信]; TP212.9 [传感器的应用];
学科分类号
摘要
提出了一种信息驱动的节点选择机制,应用于无线传感器网络中的目标估值.其以传感器节点的测量值与目标状态的估计分布之间的互信息作为信息效用函数,度量节点的测量值对目标状态估计的信息贡献,选择信息贡献值大的节点参与卡尔曼滤波过程进行迭代;应用基于地理位置信息的路由算法顺序访问选中的节点,并建立与Sink节点之间的路由,路径上的节点依次进行卡尔曼迭代以修正估计的状态值.仿真结果表明,该机制涉及的节点数目较少,总的通信距离较短,但目标估值的性能很好.
引用
收藏
页码:62 / 66
页数:5
相关论文
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