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工程科学与技术:2013,45(6):110-115
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WSN中一种基于虚拟锚节点的VA-RSSI定位算法
(四川大学 计算机学院)
A VA-RSSI Localization Algorithm Based on Virtual Anchor Nodes in WSN
(College of Computer Sci.,Sichuan Univ.)
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投稿时间:2013-06-26    修订日期:2013-09-29
中文摘要: 针对无线传感器网络中传统RSSI定位算法精度较低的缺陷,提出一种设定RSSI有效阀值的VA-RSSI(virtual anchor RSSI)定位算法。该算法将定位后的盲节点升级为虚拟锚节点,提出虚拟锚节点信任度的概念与计算公式。采用虚拟锚节点信任度作为权值,由加权最小二乘法计算节点坐标。仿真实验表明,在相同网络环境下,该算法能有效降低测距误差,提高定位精度。
Abstract:To solve the problem of low precision in traditional RSSI location estimation schemes in WSN,the virtual anchor RSSI(VA-RSSI)localization algorithm with RSSI valid threshold was presented. The proposed algorithm has three improvements,including update of virtual anchor nodes,the conception and formulation of confidence levels of virtual anchor node,and coordinate calculation of blind nodes by using weighted least square estimates. Simulation results demonstrated that the VA-RSSI algorithm reduces the distance estimation error effectively and achieves better precision at the same network environment.
文章编号:201300671     中图分类号:    文献标志码:
基金项目:四川省科技支撑项目(10CXY0034)
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引用文本:
朱敏,高弘博,肖震,卢慧,杨威.WSN中一种基于虚拟锚节点的VA-RSSI定位算法[J].工程科学与技术,2013,45(6):110-115.
Zhu Min,Gao Hongbo,Xiao Zhen,Lu hui,Yang Wei.A VA-RSSI Localization Algorithm Based on Virtual Anchor Nodes in WSN[J].Advanced Engineering Sciences,2013,45(6):110-115.