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

Sensors

Francesco Serafino¹  Claudio Lugni²  Josè Carlos Nieto Borge³ 

[1] Institute for Electromagnetic Sensing of the Environment, National Research Council, Via Diocleziano 328, Napoli I-80124, Italy; E-Mail:;INSEAN, the Italian Ship Model Basin, Department of Seakeeping and Maneuverability, Via di Vallerano 139, Roma I-00128, Italy; E-Mail:;Department of Signal Theory and Communications, University of Alcala, Alcala de Henares 28805, Spain; E-Mail:

关键词: X-band radar;    aliasing problem;    reconstruction approach;   

DOI  :  10.3390/s110101009

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2011 by the authors; licensee MDPI, Basel, Switzerland.