Estimation of ocean wave heights from temporal sequences of X-Band marine radar images

Author

Nieto-Borge, J.C. ; Jarabo-Amores, P. ; de la Mata-Moya, D. ; Lopez-Ferreras, F.

Author_Institution

Dept. of Signal Theor. & Commun., Univ. de Alcala, Alcala de Henares, Spain

fYear

2006

fDate

4-8 Sept. 2006

Firstpage

1

Lastpage

5

Abstract

Marine radars scan the water surface at grazing incidence with HH polarization. Unlike other remote sensing systems, marine radars cover smaller areas, but these sensors are able to obtain short-term temporal information about wave fields using consecutive antenna rotations. This work deals with a method to estimate the significant wave height from sea clutter image time series. This method is based on similar techniques developed for Synthetic Aperture Radar (SAR) systems. The basic idea is the significant wave height is linearly dependent on the root square of the signal-noise ratio, where the signal is assumed as the radar analysis estimation of the wave spectral energy and the noise is computed as the energy due to the sea surface roughness.

Keywords

noise; ocean waves; oceanographic techniques; radar antennas; radar clutter; radar imaging; radar polarimetry; remote sensing by radar; sea level; synthetic aperture radar; time series; HH polarization; X-band marine radar images; consecutive antenna rotations; grazing incidence; ocean wave height estimation; radar analysis estimation; remote sensing systems; sea clutter image time series; sea surface roughness; short-term temporal information; signal-noise ratio; synthetic aperture radar systems; temporal sequences; water surface; wave fields; wave spectral energy; Abstracts; Antenna measurements; Antennas; Estimation; Radar; Sea measurements; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Conference, 2006 14th European

Conference_Location

Florence

ISSN

2219-5491

Type

conf

Filename

7071572