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无线传感器网络(Wireless Sensor Network)正成为信息获取的一种新兴手段,而节点自定位技术是其中的一个重要分支。网络节点采集的数据往往需要确定的位置信息才有意义,对目标进行追踪需要预知节点位置,另外,许多网络路由机制,网络拓扑管理也是以预知节点位置信息为基础的。因此,确定节点位置是WSN最基本的功能之一,对WSN应用的有效性起着关键作用。
Wireless sensor network (Wireless Sensor Network) is becoming a new means of information acquisition, and node self-positioning technology is one of the important branches. Data collected by network nodes often need to be determined by the location of the information meaningful to track the target need to predict the location of the node, in addition, many network routing mechanisms, network topology management is based on the pre-known node location information. Therefore, determining the location of a node is one of the most basic functions of WSN and plays a key role in the validity of a WSN application.