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一种无线传感器网络室内定位系统的改进方案 被引量：6

Improved indoor location system scheme for wireless sensor network
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摘要 在无中心构架的无线传感器网络室内定位系统中,参考节点间的信号相互之间存在的干扰和冲突成为影响定位精度的重要因素之一。文中根据随机延迟时间与参考节点数量及射频发射特点之间的关系,改进了可以减少射频信号冲突的随机延迟方法。另外,设计了参考节点间的监听并加权递减的方法,有效地减少了邻居节点间超声波在同一覆盖区出现严重干扰的现象。同时,为了提高待测节点的位置计算精度,设计了合理的距离信息选择算法。 Interferences and collisions among the signals of different beacons,to indoor location system with the decentralized architecture for wireless sensor networks ,become the one of the important factors that decreases location accuracy.In this paper, an improved method to generate the random-delay-time is presented,and it can reduce the radio frequency collisions according to the relationship between beacon numbers and characteristic of radio frequency.In addition,serious interferences are decreased by using decreased-weight method at the same coverage of ultrasound from deferent neighbor beacons.To obtain the high location accuracy,an algorithm is also proposed to choice the proper distance information.
作者 刘玉宏 王耀宽
机构地区 南阳理工学院软件学院基础教研室
出处 《计算机工程与应用》 CSCD 北大核心 2008年第25期203-205,248,共4页 Computer Engineering and Applications
关键词 无线传感器网络 到达时间差 室内定位 射频 超声波 Wireless Sensor Network（WSN） Time Difference of Arrival（TDOA） indoor location radio frequency ultrasound
分类号 TP393 [自动化与计算机技术—计算机应用技术]
  • 相关文献

参考文献8

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二级参考文献7

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共引文献15

同被引文献61

  • 1张菁,陈利学.浅谈无线传感器网络的节能技术[J].中国科技信息,2005(23A):112-112. 被引量：1
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引证文献6

二级引证文献22

计算机工程与应用
2008年 第25期

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