摘要
综合无线射频识别与无线传感器网络的融合技术,提出了一种改进的三边测量定位算法。当信标节点数量较少,未知节点利用接收信号强度指示(RSSI)技术未找到与信标节点的3个距离值时,采用定位向量和未知节点的平均移动速度,计算求出新的未知节点到信标节点的距离值。实验结果表明,该算法有效地弥补了射频信号覆盖不完全和空隙区域的定位,提高了运动轨迹的定位精度和覆盖范围。
Radio frequency identification and wireless sensor network were integrated,an improved trilateral measurement locali-zation algorithm was put forward.When the number of beacon node was small,the unknown node made use of the received sig-nal strength indicator （RSSI）technique,three beacon node distance values could not be found,the location of vector and the average speed of the unknown node were used to calculate new distance value from the unknown node to the beacon node.The experimental results showed the improved localization algorithm effectively made up for the incomplete radio-frequency signal coverage and the positioning of blank area,increased the traj ectory of the positioning accuracy and coverage.
出处
《计算机工程与设计》
CSCD
北大核心
2014年第7期2278-2282,共5页
Computer Engineering and Design
基金
国家自然科学基金项目(61063003)
宁夏自然科学基金重点项目(NZ13004)
关键词
三边测量
接收信号强度
无线射频识别
无线传感器网络
信标节点
trilateral measurement
received signal strength indicator （RSSI）
radio frequency identification
wireless sensornetwork
beacon nodes
