Multi-Channel Two-way Time of Flight Sensor Network Ranging

Pettinato, Paolo and Wirström, Niklas and Eriksson, Joakim and Voigt, Thiemo (2012) Multi-Channel Two-way Time of Flight Sensor Network Ranging. In: 9th European Conference on Wireless Sensor Networks, (EWSN 2012), February 15 - 17, 2012, Trento, Italy. (In Press)

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Two-way time of flight (ToF) ranging is one of the most interesting approaches for localization in wireless sensor networking since previous ToF ranging approaches using commercial off-the-shelf (COTS) devices have achieved good accuracy. The COTS-based approaches were, however, evaluated only in line-of-sight conditions. In this paper, we extend ToF ranging using multiple IEEE 802.15.4 channels. Our results demonstrate that with multiple channels we can achieve good accuracy even in non line-of-sight conditions. Furthermore, our measurements suggest that the variance between different channels serves as a good estimate of the accuracy of the measurements, which can be valuable information for applications that require localization information.

Item Type:Conference or Workshop Item (Paper)
ID Code:5135
Deposited By:Niklas Wirstrom
Deposited On:03 Feb 2012 10:06
Last Modified:03 Feb 2012 10:06

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