Cooperative Nodes Localization for Three-Dimensional Underwater Wireless Sensor Network Based on Weighted Centroid Localization Algorithm  

作　　者：张颖 梁纪兴 姜胜明 陈慰 

机构地区：[1]College of Information Engineering,Shanghai Maritime University [2]Department of Computer Science ,Tennessee State University

出　　处：《Journal of Donghua University(English Edition)》2016年第3期473-477,共5页东华大学学报（英文版）

基　　金：National Nature Science Foundation of China(No.61273068);International Exchanges and Cooperation Projects of Shanghai Science and Technology Committee,China(No.15220721800)

摘　　要：The underwater wireless sensor network(UWSN) has the features of mobility by drifting,less beacon nodes,longer time for localization and more energy consumption than the terrestrial sensor networks,which makes it more difficult to locate the nodes in marine environment.Aiming at the characteristics of UWSN,a kind of cooperative range-free localization method based on weighted centroid localization(WCL) algorithm for three-dimensional UWSN is proposed.The algorithm assigns the cooperative weights for the beacon nodes according to the received acoustic signal strength,and uses the located unknown nodes as the new beacon nodes to locate the other unknown nodes,so a fast localization can be achieved for the whole sensor networks.Simulation results indicate this method has higher localization accuracy than the centroid localization algorithm,and it needs less beacon nodes and achieves higher rate of effective localization.The underwater wireless sensor network（UWSN） has the features of mobility by drifting,less beacon nodes,longer time for localization and more energy consumption than the terrestrial sensor networks,which makes it more difficult to locate the nodes in marine environment.Aiming at the characteristics of UWSN,a kind of cooperative range-free localization method based on weighted centroid localization（WCL） algorithm for three-dimensional UWSN is proposed.The algorithm assigns the cooperative weights for the beacon nodes according to the received acoustic signal strength,and uses the located unknown nodes as the new beacon nodes to locate the other unknown nodes,so a fast localization can be achieved for the whole sensor networks.Simulation results indicate this method has higher localization accuracy than the centroid localization algorithm,and it needs less beacon nodes and achieves higher rate of effective localization.

关 键 词：underwater wireless sensor network(UWSN) weighted centroid localization(WCL) cooperative localization RANGE-FREE 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]