Assessment of the Contribution of Time Reversal on a UWB Localization System for Railway Applications

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• 作者：Bouna Fall ; Fouzia Elbahhar ; Marc Heddebaut…
• 刊名：International Journal of Intelligent Transportation Systems Research
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：14
• 期：3
• 页码：139-151
• 全文大小：2,781 KB
• 刊物类别：Engineering
• 刊物主题：Electrical Engineering
  Civil Engineering
  Computer Imaging, Vision, Pattern Recognition and Graphics
  User Interfaces and Human Computer Interaction
  Automotive Engineering
  Robotics and Automation
  
• 出版者：Springer New York
• ISSN：1868-8659
• 卷排序：14

文摘

UWB radio has the potential to offer good performance in terms of localization precision. Time Reversal channel pre-filtering facilitates signal detection and also helps to increase the received energy in a targeted area. This paper assesses the quantitative and qualitative contributions of the Time Reversal (TR) technique associated with an Ultra Wideband (UWB) localization system applied to a railway odometry problem. The analytical and simulation results for Power Delay Profile, equivalent channel model and focusing gain of the TR-UWB are given. The contribution of the TR technique associated with UWB radio to enhance the localization resolution is analysed. To perform these studies, and to be representative of the proposed railway application, a deterministic channel model is used. The analytical simulation and experimental results show that time reversal has very promising characteristics regarding its association with the UWB in terms of localization error. These results also indicate that the TR-UWB technique delivers improved performance over UWB only localization approach, that could benefit the development of the proposed railway application.KeywordsUltra wide band (UWB)Time reversal (TR)TDOAIEEE 802.15.3a channel modelsTemporal focusingSpatial focusing