一种基于IDV-Hop算法的改进定位机制  

An Improved Localization Scheme Based on IDV-Hop for Large-Scale Wireless Sensor Networks

作　　者：吕春峰 朱建平 陶正苏[2] Lu Chunfeng1 ,ZHU Jjanping 1, TAO Zhengsu2(1. SOU College of Engineering Science and Technology Shanghai Ocean University, Shanghai 201306, China ; 2.Department of Electronic Information and Electrical Engineering Shanghai Jiaotong University, Shanghai 200240, Chin)

机构地区：[1]上海海洋大学大学工程学院,上海201306 [2]上海交通大学电子信息与电气工程学院,上海200240

出　　处：《传感技术学报》2017年第10期1542-1547,共6页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金项目(61362017)

摘　　要：无线传感器网络中的节点定位或者事件定位越来越受到重视。基于距离无关的定位机制DV-Hop,提出了一种改进定位算法IDV-Hop(Improved DV-Hop)。首先,对DV-Hop进行分析,提出了DV-Hop的局限性;根据这些局限性,结合密集节点的应用实际,提出了相应的改进措施;其次,基于改进的措施,提出了融合了HTC传送机制及权重最小二乘法的IDV-Hop协议;而且,为了提高系统的定位性能,提出了两个重要的参数:校正系数kc和权重因子wNx,i;最后,基于跳距、节点密度、锚节点分布比例、传输半径等参数,对IDV-Hop协议的性能进行仿真分析;并将基于IDV-Hop算法的定位机制性能与其他的典型的DV-Hop机制比较,得出了对于大规模定位网络,基于IDV-Hop算法的机制优于其他机制的结论。It is extremely urgent to establish and maintain low cost and high efficient localization schemes for realtime large-scale surveillance systems. An improved DV-Hop based localization scheme IDV-Hop embedded in WLS（ weighted least square） method,accompanying with HTC scheme,is proposed for the purpose of surrounding surveillance,object localization for early warning,rescue operations and restructuring plan et al. Two critical parameters,correction coefficient kcand weighted coefficient wNx,i,are introduced into IDV-Hop scheme to improve location performance. And then,NS-2 simulations demonstrate that analysis results match well with simulation results. Besides,behaviors of IDV-Hop is improved largely relative to other DV-Hop based schemesfor large-scale sensor networks.

关 键 词：基于距离无关定位 IDV-Hop定位 权重最小二乘法 无线传感器网络 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]