基于RSSI的WSN节点改进质心定位算法

Improved RSSI-based Centroid Localization Algorithm for Wireless Sensor Networks

为解决无线传感器网络节点的自定位问题,本文在对RSSI测距原理和三角形质心定位算法的基础上,提出了一种改进质心定位算法。该算法计算简单,通信开销较少,能有效减小RSSI的测距误差对定位误差的影响。仿真实验结果验证了算法的有效性,与极大似然估计法相比,在相同条件下定位精度更高。

For Localizing Wireless Sensor Networks nodes,this paper provides a improved centroid localization algorithm base on RSSI ranging and triangle centroid location algorithm. This algorithm is simple and less communication is needed,it can effectively reduce the impact of positioning error witch cause by error of RSSI ranging. The simulation shows that this algorithm is effective and posses higher positioning accuracy under the same conditions than maximum likelihood estimation algorithm.