数据采集与处理2009，Vol.24Issue(6)：757-761,5.
基于RSSI差分似然估计的WSN节点定位算法
Positioning Algorithm Using Maximum Likelihood Estimation of RSSI Difference in Wireless Sensor Networks
摘要
Abstract
To suppress received signal strength indication(RSSI)errors to the positioning precision of localized nodes in wireless sensor networks,difference coefficients of individual diversities,difference coefficients of distances,and positioning difference equations of localized distances are defined based on analytical models of the maximum likelihood estimation and RSSI.The measured distances are corrected through the closest beaconing nodes to object nodes as their reference nodes,using the difference method of RSSI.A positioning algorithm is combined with the modified difference of localized distances and the method of the maximum likelihood estimation.The positioning algorithm is easy to be realized without the additional hardware spending.The positioning error is less than 2.5 m,so it is fit for the positioning of the nodes on wireless sensor networks(WSNs)when their operation abilities and power supplies are restricted.关键词
无线传感器网络/定位/接收信号强度指示(RSSI)/极大似然估计/差分Key words
wireless sensor networks(WSNs)/positioning/received signal strength indication (RSSI)/ maximum likelihood estimation/difference分类
通用工业技术引用本文复制引用
任维政,徐连明,邹德君,邓中亮..基于RSSI差分似然估计的WSN节点定位算法[J].数据采集与处理,2009,24(6):757-761,5.基金项目
国家自然科学基金(60432010)重点资助项目 （60432010）
北京大学数字中国研究院为新研究基金(W08SN05)资助项目. （W08SN05）
