基于分层定位的无线传感器网络定位研究

Research on wireless sensor localization based on hierarchical localization

在无线传感器网络中,传感器节点定位是很重要的技术。提出了分层定位的思想,研究了一种集中与分布相结合的定位方法。分层定位技术通过筛选具有固定连接度的框架节点并分步定位,适用于高连接度的网络,可用于计算框架节点和普通节点的定位。仿真验证了分层定位在均匀分布节点网络中具有良好的定位精度。与其它现存方法相比,分层定位的策略可更灵活运用在各种定位应用中。

The localization of sensor nodes is an important technology in wireless sensor networks. A method called hierar-chical localization （HL） is proposed to solve the problem of nodes localization in dense wireless sensor networks based on centralized and distributed methods. The HL method classifies nodes into framework nodes and normal nodes, and computes the framework nodes location and the normal nodes location respectively. Simulation results show that the method performs well in regularly-shaped networks. Compared with other methods, the HL method has a flexible implementation for various applications.