Abstract
This paper considers the location of an unknown source node with asynchronous anchor nodes in Wireless Sensor Networks (WSN). In this paper, a joint synchronization and localization framework is considered and examined. Firstly, the proposed algorithm obtains algebraic solutions of the source location and the clock skew by improved Taylor series based on regularization theory. Then the clock offset is estimated. The Cramer-Rao lower bound is derived for the considered problem. Simulations show that the proposed algorithm is robust to the inaccurate initial value and better accuracy than the closed-form methods. This proposed algorithm can be widely applied in practice.
This work was supported by the National Natural Science Foundation of China (61471031), the Fundamental Research Funds for the Central Universities, Beijing Jiaotong University (2013JBZ001), Guangdong Science and Technology Program under Grant No. 2016A010101003.
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© 2018 ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering
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Zhao, J., Li, L., Gong, Y. (2018). Joint Asynchronous Time and Localization of an Unknown Node in Wireless Sensor Networks. In: Huang, M., Zhang, Y., Jing, W., Mehmood, A. (eds) Wireless Internet. WICON 2016. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 214. Springer, Cham. https://doi.org/10.1007/978-3-319-72998-5_1
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DOI: https://doi.org/10.1007/978-3-319-72998-5_1
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