Abstract
Wireless sensor network based device-free localization (DFL) is now widely used in security and monitoring systems for indoor and outdoor areas. Multipath fading induced noises often degrade the performance of the DFL security system. To address this problem, the paper firstly presents a spatiotemporal radio tomographic imaging (RTI) approach for the enhancement of localization. Specifically, the task of RTI can be formulated into a sparse Bayesian learning problem. In addition, two robust sparse Byesian learning algorithms are developed to handle with the low signal-to-noise-ratio (SNR) with heterogeneous noise. The proposed spatiotemporal RTI approach performs much better than traditional RTI with lower average errors in our four diverse cluttered indoor scenes. The localization results also highlight advantages of applying proposed robust sparse Bayesian learning algorithms in addressing missing estimations and outlier errors, and finally improving indoor target DFL performance.
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Acknowledgement
This work was supported by the National Natural Science Foundation of P.R. China under Grant No. 61375080, and the Key Program of Natural Science Foundation of Guangdong, China under Grant No. 2015A030311049. The Guangzhou science and technology project under Grant Nos. 201510010017 and 201604010101. The Special Project of Sharing Large Scientific Instruments and Equipments with the Public under Grant No. 2015B030304001.
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Shang, B. et al. (2017). Spatiotemporal Radio Tomographic Imaging with Bayesian Compressive Sensing for RSS-Based Indoor Target Localization. In: Sun, X., Chao, HC., You, X., Bertino, E. (eds) Cloud Computing and Security. ICCCS 2017. Lecture Notes in Computer Science(), vol 10603. Springer, Cham. https://doi.org/10.1007/978-3-319-68542-7_45
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DOI: https://doi.org/10.1007/978-3-319-68542-7_45
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