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基于加权处理的三边测量定位算法 被引量：19

Trilateration localization algorithm based on weighted disposal
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摘要 定位技术是无线传感器网络的关键技术之一,传统三边测量定位算法利用三个锚节点一次确定未知节点的位置坐标,而单次估算的坐标值无法准确反映未知节点的实际位置。提出了一种以RSSI值和通信质量为权值的锚节点选择算法,筛选对未知节点影响力大的锚节点用于节点定位计算。在此基础上,使用角度权重函数综合多次估算的未知节点坐标信息,进而确定未知节点位置坐标。仿真结果表明,与原三边测量定位算法相比,改进算法对锚节点随机分布有较高的鲁棒性,定位精度有较大提高。 Localization is one of the key technologies in wireless sensor network.Only the coordinates estimated by three an- chors are used in trilateration localization algorithm, but the value estimated can not reflect the unknown node＇s actual coor- dinates.A algorithm is proposed to choose the proper distance information.A distributed algorithm is also proposed to reduce the localization error and improve the robustness.This algorithm utilizes angular weighted function to integrate muti-coordi- nates into the finally coordinate.
作者 熊志广 石为人 许磊 贾传江 王海员
机构地区 重庆大学自动化学院
出处 《计算机工程与应用》 CSCD 北大核心 2010年第22期99-102,共4页 Computer Engineering and Applications
基金 国家高技术研究发展计划(863)No.2006AA780201-2 国家教育部博士点基金项目(No.2006611010)~~
关键词 传感器网络 三边测量定位 优选节点 权重函数 sensor networks trilateration localization excellent achor node weight function
分类号 TP212 [自动化与计算机技术—检测技术与自动化装置]
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参考文献12

  • 1Patwari N, Ash J.Locating the nodes: Cooperative localization in wireless sensor networks[J].IEEE Signal Processing Magazine, 2005,22(4) : 54-69.
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二级参考文献17

  • 1王福豹,史龙,任丰原.无线传感器网络中的自身定位系统和算法[J].软件学报,2005,16(5):857-868. 被引量：675
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共引文献213

同被引文献174

引证文献19

二级引证文献90

计算机工程与应用
2010年 第22期

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