无线传感器网络中一种改进的DV-Hop定位算法  

An Improved DV-Hop Localization Algorithm in Wireless Sensor Networks

作　　者：叶小岭[1] 王伟[1] 张颖超[1] 张鹏飞[1] 

机构地区：[1]南京信息工程大学信息与控制学院,江苏南京210044

出　　处：《计算机测量与控制》2010年第2期488-490,共3页Computer Measurement &Control

基　　金：江苏省"六大人才高峰"高层次人才项目资助(06-A-027);江苏省高校自然科学基金资助项目(06KJD520122)

摘　　要：节点定位是无线传感器网络应用的关键技术,文章分析了DV-Hop算法及提出的一些改进方法;DV-Hop算法简单把跳数作为衡量节点距离的标准,这样会由于跳数相同、实际距离远近不同而选用错误的锚节点定位引起较大误差;通过引入了RSSI测距模型,把测距技术和非测距技术相结合,校正距离锚节点远近,在一跳之内以及多跳情况下分别实现更高精度的定位从而达到在一定程度上降低定位误差的目的。After introducing node positioning principle simply, this article analyzed the DV-Hop localization algorithm and its improvements and introduced the implements of each methods. DV-Hop algorithm uses skip of the number of nodes as a measure of the standard, which will cause biggish positioning error due to a number of the same nodes, but different from the actual distance. Through the introduction of the model of RSSI, combining the range technology and non-ranging technology, correction anchored from the node near and far, it will achieve more hlgh-precision positioning in order to reduce the Positioning error in a certain extent in one ski Pot more.

关 键 词：无线传感器网络 节点定位 DV-HOP算法 RSSI 

分 类 号：TN011[电子电信—物理电子学]