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. 2017 Jan 27;17(2):247. doi: 10.3390/s17020247

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© 2017 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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The original and noisy ultra-high frequency (UHF) signals radiated by P₂ at O₂ and the calculated TDs. (a) The received UHF signals radiated by P₂ at O₂; (b) The noisy UHF signals when the signal-to-noise ratio (SNR) = 5 dB; (c) The calculated TDs.

The original and noisy ultra-high frequency (UHF) signals radiated by P₂ at O₂ and the calculated TDs. (a) The received UHF signals radiated by P₂ at O₂; (b) The noisy UHF signals when the signal-to-noise ratio (SNR) = 5 dB; (c) The calculated TDs.