Node Localization of Wireless Sensor Network Based on Improved DV-Hop Algorithm

The effective localization of sensor nodes can ensure stable operation of sensor networks. The sensor node localization in traditional method does not considers the produced sparse of sensor channel due to the uneven distribution of nodes, resulting in much meaningless zero tap estimation in the positioning process, thereby reducing the efficiency of localization. In this paper, an improved node localization algorithm based on DV-Hop is proposed. In this method, the traditional DV-Hop localization algorithm is improved. Using particle swarm algorithm to optimize the positioning process, the positioning results of sensor nodes are finally obtained. The experimental results show that the improved algorithm can improve the positioning accuracy of sensor nodes, which are satisfactory.