现代电子技术Issue(1)：30-34,5.
无线传感器网络中基于RSSI的质心定位算法研究
Research on centroid positioning algorithm based on RSSI and used in WSN
摘要
Abstract
In wireless sensor network,due to the widespread problems of beacons nodes' uneven distribution and centraliza⁃tion,traditional centroid algorithm has relatively large positioning error. In order to solve these problems,an improved algorithm based on RSSI is proposed. On the basis of APIT,the improved algorithm uses the received signal strength from different bea⁃con nodes to determine whether the surrounding of a unknown node exists the best triangle. If does,the improved algorithm would use the best triangle to locate. If not,the improved algorithm would select a triangle which is closer to the unknown node and use the method of moving beacon node to narrow range of the triangle to locate. The results of Matlab simulation shows that, compared with the traditional centroid algorithm,the improved algorithm can reduce the positioning error and improve the posi⁃tioning accuracy of nodes.关键词
无线传感器网络/质心定位算法/APIT/RSSI/最佳三角形/移动信标节点Key words
wireless sensor network/centroid positioning algorithm/APIT/RSSI/best triangle/moving beacon node分类
信息技术与安全科学引用本文复制引用
周林,张厚望..无线传感器网络中基于RSSI的质心定位算法研究[J].现代电子技术,2015,(1):30-34,5.基金项目
国家自然科学基金资助项目 （）
