中文摘要：

节点位置是无线传感器网络应用不可缺少的信息。DV-HOP算法是一种常见的无线传感器网络节点自定位算法。标准DV-HOP算法在计算跳数时并未根据邻居节点间距离对跳数进行加权处理,导致当邻居节点间距离差别较大时算法定位精度低的问题。从RSSI的耗散模型可看出,RRSI可以作为距离的比征,提出一种基于RSSI的DV-HOP加权算法。该算法基于节点接收信标节点位置元组时的信号强度（RSSI）对邻居节点间跳数进行加权处理,将节点间的跳数与距离相关联。仿真实验结果证明该加权算法可大大提高定位精度

英文摘要：

The localization information is crucial for the operation of wireless sensor network（WSN）.DV-Hop is a typical way for the nodes self-localization in WSNs.However,the localization accuracy of DV-HOP is very low when the disparity in distance of the adjacent nodes is very large,because the hops of the adjacent nodes always increase 1 whenever the dis- tance is far or near.In this paper,an RSSI based weighted DV-HOP（RWDV-HOP） localization algorithm is presented.In this algorithm the hops of adjacent node is weighted by the RSS of flooding packets transmitted between adjacent node.This al- gorithm improves the localization accuracy compared with previous algorithms,which has been demonstrated by the simulat- ing results