Range-Based Localization for UWB Sensor Networks in Realistic Environments
Range-Based Localization for UWB Sensor Networks in Realistic Environments
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DOI：
10.1155/2010/476598
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发表时间：
2010-01-01
影响因子：
2.6
通讯作者：
Thomae, Reiner S.
中科院分区：
文献类型：
--
作者：
Shen, Guowei;Zetik, Rudolf;Thomae, Reiner S.
超宽带（UWB）传感器网络中的非视距（NLOS）问题是影响精确定位的主要障碍。在这篇文章中，现有的定位方法在分布式超宽带传感器网络在NLOS条件下的综合概述，并提出了一种新的方法。该方法通过假设检验识别和抑制NLOS节点来处理NLOS问题。它确定NLOS节点通过比较的距离估计的均方误差与估计的LOS范围的方差和处理的情况下，少于三个视线（LOS）节点是可用的通过使用圆形轨迹的安排的统计。通过计算机仿真，在二维区域内对所提出的方法与其它方法的性能进行了比较。
The Non-Line of Sight (NLOS) problem is the major drawback for accurate localization within Ultra-Wideband (UWB) sensor networks. In this article, a comprehensive overview of the existing methods for localization in distributed UWB sensor networks under NLOS conditions is given and a new method is proposed. This method handles the NLOS problem by an NLOS node identification and mitigation approach through hypothesis test. It determines the NLOS nodes by comparing the mean square error of the range estimates with the variance of the estimated LOS ranges and handles the situation where less than three Line of Sight (LOS) nodes are available by using the statistics of an arrangement of circular traces. The performance of the proposed method has been compared with some other methods by means of computer simulation in a 2D area.