A top-down positioning scheme for underwater wireless sensor networks

作     者：ZHANG SenLin ZHANG Qiang LIU MeiQin FAN Zhen 

作者机构：College of Electrical EngineeringZhejiang University 

出 版 物：《Science China(Information Sciences)》 (中国科学:信息科学(英文版))

年 卷 期：2014年第57卷第3期

页      面：288-297页

核心收录：

学科分类：080202[工学-机械电子工程] 08[工学] 0802[工学-机械工程] 

基　　金：supported in part by National Natural Science Foundation of China(Grant Nos.61071061,61222310,61174142,61134012) Zhejiang Provincial Natural Science Foundation(Grant No.R1100234) Fundamental Research Funds for the Central Universities(Grant No.2011QNA4036) Research Fund for the Doctoral Program of Higher Education of China(Grant No.20100101110055) Zhejiang Provincial Science and Technology Planning Projects(Grant No.2012C21044) Marine Interdisciplinary Research Guiding Funds for Zhejiang University(Grant No.2012HY009B) supported by the “151 Talent Project” of Zhejiang Province 

主　　题：underwater wireless sensor networks top-down positioning scheme node’s confidence gradient method 3D Euclidean distance estimation 

摘      要：In order to increase the localization coverage while keeping the localization error small in a unique network architecture in which there are not evenly distributed anchor nodes with great ability of communication or additional infrastructure,a Top-down Positioning Scheme(TPS)for underwater acoustic sensor networks is *** defining node’s confidence reasonably,TPS insures the quality of the new reference *** also refines the nodes which have just been positioned via the gradient method and helps non-localized nodes search for more reference nodes via the new scheme for 3D Euclidean distance *** comparing the new scheme for 3D Euclidean distance estimation with the existing scheme,the new scheme is shown to have greater ability to estimate two-hop Euclidean distance in 3D *** results show that TPS which integrates node’s confidence defined reasonably,the gradient method,and the new scheme for 3D Euclidean distance estimation can increase the localization coverage ratio,while keeping the localization error small.