无线传感网络节点定位算法分析

Analysis of node localization algorithm for WSN

节点定位是无线传感网络的关键技术之一,已经在军用、民用方面得到很广泛的应用。探讨了国内外无线传感网络定位技术现状,对无线传感网络节点定位技术做了调查研究,从锚节点/无锚节点定位、集中式/分布式定位、测距/非测距定位算法进行阐述,同时对各类算法从节点定位的定位精度、规模、功耗等不同角度进行了对比。重点探讨基于RSSI的质心定位算法,并进行仿真,结果表明其定位精度明显提高。

Node localization is one of the key technologies on wireless sensor network,which has been got a wide application in military and civilian areas. WSN node localization is an important research direction. The research on WSN location in home and abroad was investigated in this paper. And the research on wireless sensor network node localization was done. Location algorithms were elaborated from need anchor nodes or not,centralized or distributed,range-free or range-based. While various of algorithms were compared from the location positioning accuracy,scale and power consumption and so on. Moreover,the paper mainly discussed the centroid localization algorithm based on RSSI. And the simulation shows that the positioning accuracy has improved significantly.