为了提高无线传感器网络的节点定位精度,分析了基于RSSI测距定位的ERSS算法,研究了RSSI值的预处理方法,修正了质心法中的加权因子,避免了权值选取的不合理性,从而实现了对ERSS算法的改进。仿真实验表明,采用这种改进定位算法可提高距离计算的精度,获得较为精确的定位。
To improve the accuracy of node localization for wireless sensor networks, this paper ana- lyzed the RSSI ranging location method and proposed an improved ERSS algorithm. The proposed al- gorithm can avoid selecting the unreasonable weight value by fixing the weighting factors. Simulation results show that the improved algorithm have a more precise result than other algorithms on terms of distance calculations and positioning.