A new solution for the time-space localization problem in wireless sensor network using UAV

Authors:
Azzedine Boukerche;Leandro A. Villas;Daniel L. Guidoni;Guilherme Maia;Felipe D. Cunha;Jo Ueyama;Antonio A.F. Loureiro
Affiliations:
University of Ottawa, Ottawa, Canada;University of Campinas, Campinas, Brazil;Federal University of Sao Joao del-Rei, Sao Joao del-Rei, Brazil;Federal University of Minas Gerais, Belo Horizonte, Brazil;Federal University of Minas Gerais, Belo Horizonte, Brazil;University of Sao Paulo, Sao Carlos, Brazil;Federal University of Minas Gerais, Belo Horizonte, Brazil
Venue:
Proceedings of the third ACM international symposium on Design and analysis of intelligent vehicular networks and applications
Year:
2013

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Abstract

Services such as localization and synchronization are crucial for many applications in Wireless Sensor Networks (WSNs), given that it is commonly required to know the position and global time of the sensor nodes. Nevertheless, these tasks are often carried out after the sensor nodes have been deployed in the sensor location. Given that it is impractical to configure the sensor nodes manually, it is essential to rely on algorithms to overcome the problem of locating and synchronizing the clock of the sensor nodes. Hence, in this study we propose a joint solution for 3D localization and time synchronization in WSNs with the aid of an unmanned aerial vehicle (UAV). The UAV is geared with a GPS device and flies over the area covered by the sensor field where it broadcasts its geographical position. This means that the sensor nodes are able to estimate their geographical position without the need to be fitted with a GPS. By carrying out simulations, we show that our joint solution leads to a smaller number of errors in time-synchronization and localization than is the case with other proposals found in the literature.