计算机科学 ›› 2015, Vol. 42 ›› Issue (4): 81-84.doi: 10.11896/j.issn.1002-137X.2015.04.015
葛 斌,郑建宝,韩江洪
GE Bin, ZHENG Jian-bao and HAN Jiang-hong
摘要: 三维定位是无线传感器网络的重要技术之一。提出了一种RSSI辅助的三维空间坐标四面体质心定位算法。由于现实环境往往很复杂,存在锚节点组成的四面体不包含未知节点的情况,因此筛选优质的RSSI值,并将其转换为未知节点与锚节点的距离,进而计算和比较四面体体积来进行排除;对包含未知节点的四面体进行质心迭代求解,并且对不满足条件的情况运用RSSI均值加权质心定位算法。仿真结果表明,该算法的定位误差比坐标四面体质心算法的小,并且增加RSSI均值加权算法提高了定位覆盖率。
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