无线传感器网络中节点定位算法的研究

Research on Node Locating Algorithms in Wireless Sensor Networks

在无线传感器网络中,节点定位是实现许多无线传感器网络应用的基础和支撑技术。现有传感器节点定位方法使用数量较多参考节点进行定位,而由于参考节点的成本、功耗、尺寸等原因使其难以大量使用。本文提出了一种基于三个移动参考节点的节点定位方法;同时,给出了以完成定位花费时间最小化为目标的优化算法。

The node localization has several applications in wireless sensor networks. While most of the existing work in network localization has investigated the problem of computing the locations of all nodes with the help of a limited subset of seed nodes, who are already aware of their own locations, it can be prohibitively expensive in terms of size, cost and power consumption for large scale deployment. This paper proposed the novel concept of mobile seed node assisted localization, in which only three mobile sensor nodes are used for network locaLiza- tion, and presented the efqcient algorithms for network localization that optimizes the localization latency by any mobile sensor node.