基于RSSI-锚圆算法的无线传感器网络节点自定位研究

摘要

针对广域危险环境下无线传感器网络中锚圆内质心定位机制存在定位不够精确的缺点,以及基于RSSI测距算法有时会存在死区域的不足,本文在深入分析这两种定位机制的基础上,融合二者的优点,提出了一种有效的无线传感器网络节点自定位方法——基于RSSI-锚圆的定位算法.并对该定位算法进行了仿真实验,实验结果表明该算法计算的半径值与实际情况相符,提高了锚圆半径值的精度,从而大大提高了节点的定位精度.%For the anchor inner circle centroid localization accuracy in wireless sensor network is not precise enough under wide dangerous environment, sometimes there are some dead zones on ranging algorithm based on RSSI, this paper deeply analysis the two localization algorithms. Combining the advantage of these two algorithms, an node localization method of wireless sensor network the localization algorithm base on the RSSI-anchor round- is proposed. And following the simulation experiment, the results show that the algorithm calculates radius which is consistent with the reality and improves the accuracy of radius, so greatly improves the positioning accuracy.