关键词: 无线传感器网络, 节点定位, 最优阶次序列

Abstract: Directing at problem of location error of node in WSN, this paper proposes an order sequence weighted wireless sensor location algorithm. Adopt shadowing model based on signal transmission of node location. Establish Voronoi graph based on anchor node, and take vertex of Voronoi polygon as reference nodes, and then establish the order sequence between anchor nodes and reference nodes, and the location of unknown node is estimated by the N unknown nodes and optimal sequence weighted. The simulation result shows that this algorithm can not only improve the location precision of sensor node, but also reduce computation complexity of algorithm compared to other reference algorithms, so it is of higher application value in the aspect of WSN node location.

Key words: Wireless Sensor Network, node localization, optimal rank sequence