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2016-04-02
Device-Free Electromagnetic Passive Localization with Frequency Diversity
By
Progress In Electromagnetics Research M, Vol. 47, 129-139, 2016
Abstract
As an emerging wireless localization technique, the electromagnetic passive localization without the need of carrying any device, named device-free passive localization (DFPL) technique has drawn considerable research attentions. The DFPL technique detects the shadowed links in the monitored area and realizes localization with the received signal strength (RSS) measurements of these links. However, the current RSS-based DFPL techniques have two major challenges: one is that the RSS signal is particularly sensitive to noise and another one is that it needs the large number of nodes to provide enough RSS measurements of wireless links to guarantee good performance. To overcome these problems, in this paper we take advantage of compressive sensing (CS) theory to handle the spatial sparsity of the DFPL problem for reducing the number of nodes required by DFPL systems and exploit the frequency diversity technique to deal with the problem of the RSS sensitivity. Meanwhile, inspired by the fact that the target's movement is continuous and the target's current location must be around the last location, we add prior information on the support region into the sparse reconstruction process for enhancing sparse reconstruction performance. The effectiveness and robustness of the proposed scheme are demonstrated by experimental results where the proposed algorithm yields substantial improvement for localization performance.
Citation
Wei Ke Yanan Yuan Xiunan Zhang Jianhua Shao , "Device-Free Electromagnetic Passive Localization with Frequency Diversity," Progress In Electromagnetics Research M, Vol. 47, 129-139, 2016.
doi:10.2528/PIERM15102502
http://www.jpier.org/PIERM/pier.php?paper=15102502
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