【摘要】 无线传感器网络的许多应用都是基于节点的位置信息。传感器网络由于节点数量巨大,而且资源十分有限,全部节点都采用类似GPS的定位设备是不适宜的。文章介绍了无线传感器网络基于节点之间的连通性来估计节点的位置的定位算法,方法是在传感器网络中预先部署十分少量已知位置信息的信标节点,然后通过节点之间的跳数信息,实现对节点位置的估计。仿真显示该算法具有较好的实用性。更多还原

【Abstract】 It is necessary for the nodes in a wireless sensor network to know their own physical locations.Because of constraints in size,form factor,and cost of construction of sensor nodes,it is impractical to use traditional GPS receiver at each sensor node.A localization scheme ,which can use connection of senor nodes to estimate the location of nodes,is presented.This scheme requires a small percentage of sensor nodes whose location is known.Other nodes calculate their position based on the beacon locations and the hop-counts from the beacon nodes.The simulation results show that the localization scheme is practical.更多还原