计算机应用与软件2013，Vol.30Issue(6)：116-120,5.DOI:10.3969/j.issn.1000-386x.2013.06.032
一种基于次锚节点的无线传感器网络质心定位算法
A CENTROID LOCALISATION ALGORITHM BASED ON SECONDARY ANCHOR FOR WIRELESS SENSOR NETWORK
摘要
Abstract
Centroid localisation algorithm is a typical way of range-free localisation in wireless sensor networks.The weak points of this algorithm are the limited accuracy and coverage.To solve the problem,a new WCSA algorithm is proposed.On the basis of point-in-triangulation test (PIT),the algorithm optimises the anchor nodes selection,assigns the weight on different anchor nodes utilising the feature of triangle centroid,reflects the effect of different anchor nodes on localisation,revises the locating results and improves the precision of localisation.For the edge nodes and the nodes cannot be located in networks,the algorithm solves the problem by introducing secondary anchor in the way of feature count to do secondary localisation.While cut down the application cost,the localisation coverage rate is improved effectively.Simulation experiment indicates that the new algorithm effectively improves the accuracy of localisation compared with classic centroid algorithm and has general applicability.关键词
无线传感器网络/质心算法/次锚节点/PITKey words
Wireless sensor network /Centroid algorithm / Secondary anchor / PIT分类
信息技术与安全科学引用本文复制引用
衣晓,王梓有,薛兴亮..一种基于次锚节点的无线传感器网络质心定位算法[J].计算机应用与软件,2013,30(6):116-120,5.基金项目
山东省自然科学基金项目(ZR2011FQ002). （ZR2011FQ002）
