摘要
为了降低定位成本及提高定位精度,提出了一种使用单个锚节点移动进行未知节点坐标计算的SAPSO-SMPMA算法。该算法采用单个移动锚节点游历定位区域,并通过功率控制发射不同功率的信标信号,未知节点利用收到的不同位置锚节点信息结合自适应权重粒子群算法计算节点坐标。考虑到实际应用时锚节点可能带有误差,故加入了锚节点矢量误差分析。仿真表明,本算法在充分考虑锚节点自身误差及大幅降低定位成本的情况下,定位精度仍然较高,是一种实用的定位算法。
A location algorithm is studied in wireless sensor networks and in terms of the problem a new locating algorithm for using single mobile anchor node is proposed,single mobile anchor node passes the network according to the designed step length and path ,at the same time, transmits beacon signal of different power through the power control. The unknown nodes are posi- tioned by the received information, and in the positioning stage. Considering the practical application of the anchor nodes may have error, the anchor nodes vector error analysis is intro duceed.The simulation results show the new algorithm shows good performance. It is a feasible wireless sensor network node localization algorithm.
出处
《电子技术应用》
北大核心
2015年第6期88-90,94,共4页
Application of Electronic Technique
基金
陕西省自然科学基金资助项目(2009JM8015)
陕西省教育厅专项科研基金资助项目(2010JK815)
关键词
无线传感器网络
移动锚节点
多功率控制
粒子群
wireless sensor network
mobile anchor node
multi-power control
particle swarm optimization
