无线传感器网络中基于DV-Hop节点定位算法的研究  

ON DV-HOP BASED NODE LOCALISATION ALGORITHM IN WIRELESS SENSOR NETWORK

作　　者：周林[1] 张厚望 

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《计算机应用与软件》2015年第11期92-96,共5页Computer Applications and Software

基　　金：家自然科学基金项目(61171190)

摘　　要：针对无线传感器网络中无需测距的DV-Hop算法定位精度低的缺陷,提出改进算法。改进算法是以传统的DV-Hop算法为依据,利用RSSI为依托。在获得跳数的步骤之后,对跳数进行修正,再对平均每跳距离进行加权处理,最后修正节点之间的距离,以提升传感器节点的定位精度。通过Matlab仿真实验结果表明,与传统的DV-Hop算法相比,改进算法能更加准确地估计了跳数、平均每跳距离与节点间的距离,提高了定位精度,较实际地反映出了网络的状况。In order to solve the limitation of DV-Hop algorithm in wireless sensor network with no ranging need that its localisation accura- cy is low, we propose an improved algorithm. It is based on traditional DV-Hop algorithm and relying on using RSSI technology. After the procedure of getting hop numbers, it amends the hop numbers and makes weighted processing on average distance per hop. Finally, it amends the distance between nodes, therefore to raise the localisation accuracy of sensor node. It is demonstrated by Matlab simulation experimental results that compared with traditional DV-Hop algorithm, the improved algorithm is able to more accurately estimate the hops, the average dis- tance per hop and the distance between nodes, improves the accuracy of localisation, and more actually reflects the network status.

关 键 词：无线传感器网 络DV—Hop定位算法 跳数修正 平均每跳距离加权 距离修正 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]