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Bayesian Source Localization in Networks with Heterogeneous Transmission Medium

机译:异构传输网络中的贝叶斯源定位

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摘要

Precise positioning and tracking information in networks with a heterogeneous transmission medium presents a novel networking paradigm. Most of the localization algorithms are vulnerable to the variations of signal propagation speed, dielectric constant, and path-loss coefficient resulting in unreliable location estimation. In this paper, we propose a novel robust probabilistic Bayesian-based approach using received-signal-strength (RSS) measurements with varying path-loss exponent in wireless networks with heterogeneous medium. An application of such a localization method is relative positioning of nodes in a wireless network with a heterogeneous medium such as gastrointestinal tract monitoring using wireless video capsule endoscopy. The results of this study showed that the localization root mean square error (RMSE) of our Bayesian-based method when a sensor node was covered by four anchors was 1.0 mm which is smaller than that of other existing localization approaches under the same conditions such as classical MDS (43.1mm), dwMDS (24.7mm), MLE (21.8mm) and POCS (1.7mm).
机译:在具有异构传输介质的网络中的精确定位和跟踪信息提出了一种新颖的联网范例。大多数定位算法容易受到信号传播速度,介电常数和路径损耗系数变化的影响,从而导致位置估计不可靠。在本文中,我们提出了一种新颖的基于贝叶斯的鲁棒概率方法,该方法在异构介质无线网络中使用具有变化路径损耗指数的接收信号强度(RSS)测量。这种定位方法的一种应用是在无线网络中使用异构介质​​(例如使用无线视频胶囊内窥镜进行胃肠道监测)的无线网络中的节点的相对定位。这项研究的结果表明,当传感器节点被四个锚覆盖时,我们的基于贝叶斯方法的定位均方根误差(RMSE)为1.0 mm,比相同条件下的其他现有定位方法小。经典MDS(43.1毫米),dwMDS(24.7毫米),MLE(21.8毫米)和POCS(1.7毫米)。

著录项

  • 来源
    《Navigation》 |2012年第3期|p.163-175|共13页
  • 作者单位

    University of Southern Denmark, Odense, Denmark;

    Harvard University, Cambridge, Massachusetts;

  • 收录信息 美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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