Research Article
Joint Asynchronous Time and Localization of an Unknown Node in Wireless Sensor Networks
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@INPROCEEDINGS{10.1007/978-3-319-72998-5_1, author={Junhui Zhao and Lei Li and Yi Gong}, title={Joint Asynchronous Time and Localization of an Unknown Node in Wireless Sensor Networks}, proceedings={Wireless Internet. 9th International Conference, WICON 2016, Haikou, China, December 19-20, 2016, Proceedings}, proceedings_a={WICON}, year={2018}, month={1}, keywords={Localization Clock offset Clock skew WSN}, doi={10.1007/978-3-319-72998-5_1} }- Junhui Zhao
Lei Li
Yi Gong
Year: 2018
Joint Asynchronous Time and Localization of an Unknown Node in Wireless Sensor Networks
WICON
Springer
DOI: 10.1007/978-3-319-72998-5_1
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.
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