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无线传感网中节点定位中的障碍物分析 被引量：2

Analyzing of obstacle in location of wireless sensor network nodes
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摘要 节点之间存在障碍物导致定位不准,本文探讨了无线传感网中节点定位问题,分析了定位中障碍物问题。利用集中式DV-hop以及最小二乘法来优化定位算法。无线传感网中估算出的节点位置与实际节点位置存在误差。本文分析了产生这种误差的原因,针对障碍物引起的误差,本文提出了障碍物预测算法,预测障碍物的存在,避免了由于障碍物导致的定位误差,改善了定位算法,提高了节点定位的精度。仿真结果证明,加入这一障碍物因素后其节点的定位精度得到提高。 The location error occurs owing to the obstacle, in this paper, location of wireless sensor network nodes is discussed,and location algorism is analyzed. DV-hop and the least square method are used to improve the location algorism. As for the location of sensor node deviating from the actual position, the reason is analyzed in this paper, and a new method is proposed to predict barriers among nodes to improve the precision of node location. Finally, simulation results prove that the precision is promoted after this method is used.
作者 黄欢 张伟 陈启军
机构地区 同济大学控制科学与工程系
出处 《电子测量技术》 2007年第7期192-195,共4页 Electronic Measurement Technology
基金 上海市曙光计划(04SG22) 教育部产世纪人才计划资助项目
关键词 定位 无线传感网 障碍物分析 锚点 接收信号强度 Location wireless sensor network obstacle probe reference receive signal indication
分类号 TP393 [自动化与计算机技术—计算机应用技术]
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参考文献7

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二级参考文献32

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共引文献157

同被引文献18

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电子测量技术
2007年 第7期

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