The effect of human-body shadowing on indoor UWB TOA-based ranging systems


Kilic, Yakup and Ali, Ameenulla J. and Meijerink, Arjan and Bentum, Mark J. and Scanlon, William G. (2012) The effect of human-body shadowing on indoor UWB TOA-based ranging systems. In: IEEE 9th Workshop on Positioning Navigation and Communication, WPNC 2012, 15-16 March 2012, Dresden, Germany (pp. pp. 126-130).

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Abstract:Because of its superior time resolution, ultra-wide bandwidth (UWB) transmission can be a highly accurate technique for ranging in indoor localization systems. Nevertheless, the presence of obstructions may deteriorate the ranging performance of the system. Indoor environments are often densely populated with people. However, th e effect of the human body presence has been scarcely investigated so far within the UWB ranging context. In this work, we investigate this effect by conducting UWB measurements and analyzing the ranging performance of the system. Two measurement campaigns were performed in the 3-5.5 GHz band, in an anechoic chamber and a laboratory environment. The range estimates were obtained by employing the threshold-based first peak detection technique. Analysis results revealed that the human body significantly attenuates the direct-path signal component. On the other hand, in this study it does not introduce a significant range error since the length difference between the diffracted paths around the body and the direct-path is less than the spatial resolution of the measurement setup.
Item Type:Conference or Workshop Item
Copyright:© 2012 IEEE
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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