【摘要】 文章提出了一个UWB(Ultra-wide Band)无线传感器网络的无线节点定位系统模型,仿真分析表明,对于四个参考节点都是LOS(Line Of Sight)路径到达传感器节点的情况,其定位的精确度相当高;但是,如果四个参考节点中有一个节点是NLOS(Non Line Of Sight)路径到达传感器节点的话,当信噪比低于30dB,则定位误差不小于5m,这时候要保证较高的定位准确度,就应该保证较高的信噪比或者增加参考节点数目。更多还原

【Abstract】 A node positioning model of UWB wireless sensor networks is proposed,and positioning error of the model is investigated through simulation.High accuracy of positioning is achieved if all four reference nodes have LOS(Line of Sight) information path,however,even if one reference node does not has a LOS information path,the positioning error will no less than 5m when the SNR(Signal to Noise Rate) lower than 30dB,so the SNR or reference node should be increased to assure the positioning accuracy.更多还原