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. 2017 Jul 25;17(8):1705. doi: 10.3390/s17081705

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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 comparison between SAR-derived wind speed U₁₀ and measurements from NDBC buoys. (a) Comparison for 16 VV-polarization GF-3 SAR images; and (b) Comparison for 42 horizontal–horizontal (HH)-polarization GF-3 SAR images.