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基于RSSI均值的等边三角形定位算法 被引量：76

Equilateral Triangle Localization Algorithm Based on Average RSSI
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摘要 为了提高无线传感网络的定位精度,从提高测量精度、改善信标节点分布的角度提出了一种基于RSSI均值的等边三角形定位算法.该算法引入信号强度指示(RSSI)敏感区和非敏感区概念,采用高斯模型对非敏感区的RSSI数据进行处理,解决了RSSI易受干扰的问题.采用等边三角形分布模型处理信标节点的分布,保证未知节点运动轨迹始终在信标节点的非敏感区内,从而在定位算法上使测量精度得到提高.研究表明,高斯模型可以很好地筛选出RSSI较优值;等边三角形分布模型可以提高RSSI的采集优度.这种定位算法计算简单,定位过程中节点间无通讯开销,无需硬件扩展. To get high precision of localization in WSNs（wireless sensor networks）, an equilateral triangle localization algorithm based on average RSSI is brought up, taking account mainly of the measurement precision and improvement of the distribution of beacon nodes. This algorithm presents two concepts： sensitive region and insensitive region of RSSI. It introduces Gauss model to deal with the RSSI which is got from in sensitive region, then the problem that RSSI is easy to be interfered is resolved. And the equilateral triangle distribution model is used to deal with the distribution of beacon nodes to ensure that the tracks of unknown nodes are always kept within the insensitive region, thus improving the measurement precision. A conclusion is drawn that the Gauss model can screen out the first-class RSSI well and the equilateral triangle distribution model can improve the acquisition precision. This algorithm is easy to implement and no communication expense and extended hardware are required.
作者 朱剑 赵海 孙佩刚 毕远国
机构地区 东北大学信息科学与工程学院
出处 《东北大学学报（自然科学版）》 EI CAS CSCD 北大核心 2007年第8期1094-1097,共4页 Journal of Northeastern University(Natural Science)
基金 国家发改委高技术产业化示范工程项目[(2001)2167] 国家科技部火炬计划项目(2002EB010154)
关键词 无线传感网络 信标节点 等边三角形定位 高斯模型 RSSI(信号强度指示) WSNs （wireless sensor networks） beacon node equilateral triangle localization Gauss model RSSI （received signal strength indication）
分类号 TP393.17 [自动化与计算机技术—计算机应用技术]
  • 相关文献

参考文献7

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二级参考文献53

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共引文献671

同被引文献563

引证文献76

二级引证文献434

东北大学学报（自然科学版）
2007年 第8期

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