基于信标节点间RSSI的改进三维定位算法的研究

An Improved RSSI 3D Localization Algorithm Based on Beacon Node

节点定位是无线传感器网络的重要支撑技术之一,目前主要有两种定位算法,基于距离的定位算法和非基于距离的定位算法。考虑到两种算法在三维空间的优缺点,提出了一种基于RSSI测距的修正算法,并优选信标节点,最后通过最小二乘法进行定位。仿真结果表明:本算法比传统的RSSI算法精度更高。

Node localization is one of the important supporting technologies of WSN. Now there are mainly two localization algorithms--based on distance localization algorithm and non -distance -based localization algorithm. Taking into account of the strengths and weaknesses of the algorithm present correction algorithm based on distance localization algorithm and the beacon nodes are preferable in 3D space. Finally the unknown node is located by the least squares method. Simulation results show that the algorithm has higher accuracy than the traditional RSSI algorithm.