摘要
在无线传感器网络中，因无线传感器设备功耗、价格和硬件限制及对定位精度的要求，距离无关定位机制被认为是一类具有成本效益的解决方案。介绍了距离无关定位机制中的DV—hop定位算法，研究了不良节点、网络拓扑结构、锚节点和邻居节点对DV—hop定位算法性能的影响，分析了算法的通信量和计算量。在连通的网络中，该算法能够达到35％～40％的平均定位精度；该算法只需要较少的锚节点，计算和通信开销适中，不需要节点具备测距能力，是一个可扩展的算法，适用于各向同性的密集网络。
The Range -free mechanism is assumed as a cost -benefit solution to the Wireless Sensor Network due to the power, the price of equipment and the requirement to localization accuracy. The DV - hop localization Algorithm of a Range- free mechanism was introduced. How ill -connected nodes, network topology, the number of anchors and the number of neighbors affect the performance of DV - hop localization algorithm were investigated. The traffic and calculation of the algorithm were analyzed. In a good connected network, the algorithm can reach an average localization accuracy of 35% -40% , which needs only a few anchors with moderate traffic and cost. There is no need for the node equipped with measurement. It is a prolate algorithm applicable to the dense network.
出处
《武汉理工大学学报（信息与管理工程版）》
CAS
2007年第12期35-38,共4页
Journal of Wuhan University of Technology：Information & Management Engineering
基金
新世纪优秀人才支持计划资助项目(NECT-05-0657)
关键词
定位算法
距离无关
DV—hop
定位误差
localization algorithm
e range - free
DV - hop
localization accuracy
