无线传感器网络中基于移动锚节点的APIT的改进定位算法  

A Modified Localization Algorithm of APIT Based on Mobile Anchor Node for Wireless Sensor Network

作　　者：冯秀芳[1] 崔秀锋[1] 祈会波[1] 

机构地区：[1]太原理工大学计算机科学与技术学院,太原030024

出　　处：《传感技术学报》2011年第2期269-274,共6页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金(60873139)视觉听觉跨模态相干性协同算法分析;山西省自然科学基金项目(2008011040)视觉听觉跨模态语义相干性算法研究;山西省回国留学人员科研项目(2007-27)无线传感器网络中智能数据融合方法的研究

摘　　要：针对APIT定位算法定位误差大,覆盖率低等缺点,提出了一种基于移动锚节点的改进的定位算法。在网络中引入移动锚节点,通过移动覆盖算法尽量使节点均匀分布,并提出了一种基于异构传感器网络的最佳节点数量的计算方法,另外引入了RSSI量化模型对APIT算法进行修正,解决了用APIT算法不能进行定位的问题。仿真结果表明,其与传统方法相比在定位精度和覆盖率等方面有较大提高。To overcome current APIT localization algorithm disadvantage of low localization accuracy and low coverage rate,this paper proposed an improved mobile anchor node-based APIT localization algorithm.Firstly,we introduced some mobile anchor nodes into the sensor network,combined with mobile coverage algorithm to make the nodes distributed as evenly as possible.Secondly,produced a optimal nodes number calculation method based on heterogeneous sensor network.Finally,improved APIT algorithm by combined with RSSI quantification model to solve the problem of APIT algorithm cannot be used to localize.Simulation experiments prove that,in aspects of localization accuracy and coverage rate,this algorithm has great advantage over traditional algorithms.

关 键 词：无线传感器网络 节点定位 APIT算法 移动锚节点 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]