摘要
在无线传感器网络的节点定位过程中,未知节点在x轴和y轴方向上的定位精度较z轴更重要。为此,在RSSI高斯混合(RGM)算法的基础上提出一种基于平面投影的定位算法。通过缩小未知节点空间定位误差区域在xoy平面上的投影面积,提高未知节点在x轴和y轴方向上的定位精度。仿真结果表明,与RGM算法相比,该算法可在不增加时间复杂度及网络通信量的基础上,有效提高节点的x轴和y轴定位精度。
In the process of Wireless Sensor Network(WSN) node positioning,it is more important to improve the x- axis and y-axis positioning accuracy of an unknown node than z-axis positioning accuracy, so this paper proposes a positioning algorithm based on planar projection on the basis of unknown node positioning accuracy on the x-axis and y-axis RSSI Gaussian Mixed (RGM) algorithm. It improves directions by reducing the projected area of spatial positioning error region. Simulation results show that,compared with RGM algorithm,the proposed algorithm can improve the x-axis and y-axis positioning accuracy without any inscrease in time complexity and network traffic.
出处
《计算机工程》
CAS
CSCD
北大核心
2016年第12期1-4,共4页
Computer Engineering
基金
江苏省产学研联合创新基金(BY2013015-35)
关键词
无线传感器网络
节点定位
平面投影
RSSI高斯混合算法
投影面积
Wireless Sensor Network (WSN)
node positioning
planar projection
RSSI Gaussian Mixed ( RGM )algorithm
projected area