基于RSSI加权的三维质心定位算法

摘要

Node localization is one of the key technologies of wireless sensor network. To solve the big error of local-ization in 3D mountainous terrain, the paper puts forward a localization algorithm based on RSSI and weighted cen-troid. This algorithm's weight is based on the distance of point to plane to replace the distance of point to point to im-prove the positioning accuracy. The simulation results show that this proposed algorithm has a higher positioning ac-curacy than the traditional weighted centroid algorithm.%节点定位是无线传感器网络中的关键技术之一，本文针对三维地形定位存在较大误差的问题，提出了一种将接收信号强度RSSI测量方法与加权质心定位相结合的算法。该算法的权值是用点到平面的距离作为其计算的一部分来代替传统加权质心算法中点到点的距离从而达到提高定位精度的目的。仿真表明，该算法定位精度比传统的加权质心定位精度有提高。