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Sensors 2011, 11(1), 1009-1027; doi:10.3390/s110101009

A Simple Strategy to Mitigate the Aliasing Effect in X-band Marine Radar Data: Numerical Results for a 2D Case

1 Institute for Electromagnetic Sensing of the Environment, National Research Council, Via Diocleziano 328, Napoli I-80124, Italy 2 INSEAN, the Italian Ship Model Basin, Department of Seakeeping and Maneuverability, Via di Vallerano 139, Roma I-00128, Italy 3 Department of Signal Theory and Communications, University of Alcala, Alcala de Henares 28805, Spain
* Author to whom correspondence should be addressed.
Received: 29 November 2010 / Revised: 5 January 2011 / Accepted: 12 January 2011 / Published: 18 January 2011
(This article belongs to the Section Physical Sensors)
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For moderate and high speed values of the sea surface current, an aliasing phenomenon, due to an under-sampling in the time-domain, can strongly affect the reconstruction of the sea surface elevation derived from X-band radar images. Here, we propose a de-aliasing strategy that exploits the physical information provided by the dispersion law for gravity waves. In particular, we utilize simplifying hypotheses and numerical tests with synthetic data are presented to demonstrate the effectiveness of the presented method.
Keywords: X-band radar; aliasing problem; reconstruction approach X-band radar; aliasing problem; reconstruction approach
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Serafino, F.; Lugni, C.; Nieto Borge, J.C.; Soldovieri, F. A Simple Strategy to Mitigate the Aliasing Effect in X-band Marine Radar Data: Numerical Results for a 2D Case. Sensors 2011, 11, 1009-1027.

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