【摘要】 由于事件发生的位置和获取信息的节点位置是无线传感器节点监测消息中所包含的重要信息,因此如何进行无线传感网络节点自定位成为了当前的一个研究热点.在过去权质心算法的研究基础上,本文提出了基于RSSI校验的无线传感器网络节点定位算法,利用固定节点之间的距离和RSSI值来校正移动节点与每个固定节点之间的权值,从而提高了算法的定位精度.实验结果表明,在相同实验环境下本算法的精度优于以往的权质心算法.尤其在平均定位误差方面,前者比后者改进了大约25%.更多还原

【Abstract】 Since the positions of events or nodes are the most important part of monitoring information from sensor nodes, how to obtain the accurate localization has become the focus of the attention. Based on Weighted Centroid method, this paper presents a new RSSI-verify based localization algorithm for wireless sensor network which takes the known distance and its corresponding RSSI between the fixed nodes into account and amends the weights of the fixed nodes, thus improving the localization accuracy of the mobile nodes. The experimental results show that the proposed method outperforms Weighted Centroid method under the same environment. Especially, the former decreases the average localization error by about 25% compared with the latter.更多还原