【摘要】 给出了无线传感器网络RSS测距定位模型的距离无偏估计和定位估计方差Cramer-Rao下界。实验表明定位方差在锚节点附近产生突变,同时随着锚节点数量的增多而减小,可应用于定位算法的精度评估和节点配置方案选择。更多还原

【Abstract】 An unbiased estimator for distance and the Cramer-Rao lower bound of location estimation variance is presented based on RSS-ranged localization model.The experiment results indicate that the variance increases drastically near anchor nodes and is related to the numbers of the anchor nodes,which can be applied in evaluating the accuracy of some localization algorithm and selecting the solution of sensor nodes configuration.更多还原