基于节点映射的井下无线传感器网络定位算法  

Positioning algorithm for underground wireless sensor networks based on node mapping

作　　者：张炜[1] 

机构地区：[1]河北工程大学科信学院,河北邯郸056038

出　　处：《工矿自动化》2013年第11期8-11,共4页Journal Of Mine Automation

基　　金：国家自然科学基金项目(51174070)

摘　　要：针对目前井下定位算法对未知节点不在锚节点组成区域内的情况考虑不全面,从而导致定位误差较大的问题,提出了一种基于节点映射的改进加权质心定位算法。该算法对未知节点不在锚节点组成区域内的情况进行节点映射处理,并通过改进加权质心定位算法求锚节点的多个质心,通过质心节点对未知节点进行定位。仿真结果证明,该算法可以提高节点的定位精度。In view of problem that unknown nodes out of the region of anchor nodes are not considered with current underground positioning algorithm, which leads to bigger positioning error, an improved weighted centroid positioning algorithm based on node mapping was proposed. The algorithm conducts node mapping process for unknown nodes out of the region of anchor nodes, gets multiple centroids of anchor nodes by improved weighted centroid positioning algorithm, and uses multiple centroids to position unknown nodes. The simulation results show that the improved algorithm can improve positioning accuracy of nodes.

关 键 词：井下定位 无线传感器网络 节点映射 加权质心定位算法 

分 类 号：TD655.3[矿业工程—矿山机电]