【摘要】 为了研究节点定位算法的实现方法,提出了一种新的加权质心定位算法。这种算法首先通过对无线电传播路径损耗模型的分析,结合具体环境的实验,得到信号传播的经验模型,然后利用信标节点对未知节点的不同影响力来确定加权因子,进行加权质心算法定位。最后在对定位数据处理和分析的基础上,选取三个RSSI最大的信标节点进行定位计算,进一步改善了节点定位精度。仿真和实验结果表明,这种加权质心算法可应用于区域定位。更多还原

【Abstract】 To study an implement approach about nodes localization,a new kind of weighted centroid localization algorithm was presented.This algorithm analyzing the model of radio wave propagation loss and the experiment in a specific environment obtains a signal transformation experiment model,then determines coefficients which are decided by the influence of beacons to unknown nodes,and locates with the weighted centroid algorithm.Based on locating data processing and data analyzing,the method of choosing the three maximum-RSSI beacons for localization is developed in order to further improve localization accuracy.The result of the simulation and experiment indicates that this weighted centroid localization algorithm can be used to area localization.更多还原