The Research On Wireless Sensor Network Node Localization Algorithm

The current wireless sensor network positioning error is high,and the energy consumption and the people in the high accuracy requirements of the contradiction gradually exposed,become the current wireless sensor network needs to solve an important problem.Therefore,the research of low energy consumption and high precision technology is becoming more urgent and important.Positioning algorithm has high stability and reliability requirements,which leads to more complex network topology changes and increased communication costs,which makes the positioning technology will be the direction of low cost,low energy consumption.In this paper,the DV-Hop(Vector Distance-Hop)localization algorithm in wireless sensor networks is done as follows :1)the research of wireless sensor network technology background and significance,domestic and foreign research,the characteristics of wireless sensor network,without ranging technology advantage,DV-Hop algorithm and some problems to be solved are analyzed and summarized.2)this paper proposes a DV-Hop mobile node localization algorithm.First,the nodes in the wireless communication network positioning of the related research has carried on the induction summary,etc,and then analyzes and points out the existing some problems that exist in the localization algorithm,such as communications,existing in the jumping times can lead to network nodes hop phenomenon of error accumulation is too large,lead to meaningful node can't send the reliable and accurate information.Set up because of the error based on the analysis of the hop to mobile node contains double radius broadcast their location information network,the two radius according to send too much information to filter out the hop node,and finally,complete the location of the node localization.3)in view of the node path choice,a choice jump period of correction of DV-Hop algorithm.On the analysis of the road Diameter error,on the basis of the positioning of the node and combining with the characteristics of the network nodes in multipath.This method considers the influence of node path on the positioning accuracy,and then by selecting the path to the average distance of correction,in the end,the node position calibration.4)through Matlab simulation platfo rm,with the nodes of the two kinds of algorithm,survival time and the evaluation of energy consumption of nodes,etc,to verify the effectiveness of the proposed two algorithms.