Ocean wave spectrum and radar cross-section analysis from coincident ENVISAT ASAR observations and airborne polarimetric radar measurements performed during the VALPARESO experiment

Hauser, Danièle; Mouche, Alexis; Chapron, Bertrand; Johnsen, Harald; Daloze, J. F.; Guérin, Charles-Antoine; Caudal, G.; Lefèvre, Jean‐Michel

doi:10.1109/igarss.2003.1294290

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…It covers the 0−18 • incidence range in horizontal polarization (which is quasi-equivalent to the vertical polarization at these low incidences). The other two data sets concerns the C band (STORM, [33]) and Ka-band (SRA, [34]) and cover a variety of wind speeds and sea states under different incidence angles (from 7 • to 16 • for STORM and 0 • to 15 • for SRA).…”

Section: A Nadiral Datamentioning

confidence: 99%

Revisiting the Short-Wave Spectrum of the Sea Surface in the Light of the Weighted Curvature Approximation

Bringer

Chapron

Mouche³

et al. 2014

IEEE Trans. Geosci. Remote Sensing

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Existing models for the short-wave spectrum of the sea surface are not consistent with microwave satellite data when multi-bands and multi-incidence data sets are considered. We devise a simple parametric model for the short-wave omnidirectional spectrum of the sea surface on the basis of a three-band (C, Ku, and Ka) and multi-incidence (low, moderate, and large) data set and an improved analytical scattering model, namely the non-Gaussian Weighted Curvature Approximation. This spectrum is also constrained by several optical measurements which provide a priori conditions on the total and filtered mean-square slopes. It is compared with classical models such as Elfouhaily and Kudryavtsev unified curvature spectra. Significant differences are observed at wave numbers corresponding to the range of decimeter scales. The new spectrum is by construction fully consistent with the omnidirectional normalized radar cross section of the multi-band data set

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Section: A Nadiral Datamentioning

confidence: 99%

Revisiting the Short-Wave Spectrum of the Sea Surface in the Light of the Weighted Curvature Approximation

Bringer

Chapron

Mouche³

et al. 2014

IEEE Trans. Geosci. Remote Sensing

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show abstract

“…This data set was acquired during the VALidation with a Polarimetric Airborne Radar of the Envisat Synthetic Aperture Radar over the Ocean (VALPARESO) airborne experiment [25]. STORM is a real aperture fully polarimetric radar operating in C-band (5.35 GHz) with a range resolution of 1.5 m. It can scan 360 • azimuth with an angular resolution of 3.8 • .…”

Section: A Stormmentioning

confidence: 99%

Peakedness Effects in Near-Nadir Radar Observations of the Sea Surface

Bringer

Guérin²,

Chapron³

et al. 2012

IEEE Trans. Geosci. Remote Sensing

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The simulation and interpretation of microwave sea radar return in the near-nadir region is still an issue in view of the limitations of the Geometrical Optics approximation and the multi-scale and non-Gaussian nature of the surface. We show that an unambiguous and fully consistent physical approach can be reached in the framework of the Physical Optics. The model is developed on the basis of various satellite and airborne C-, Ku- and Ka-band measurements using different reference surface roughness spectra. As found the introduction of a peakedness correction based upon the excess kurtosis of slopes is necessary to obtain consistent analysis across the microwave frequency range. The model yields accurate simulations for the omnidirectional near-nadir NRCS in different frequency bands, provided the spectrum satisfies some a priori constraints on the distribution of total and filtered slopes

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Ocean wave spectrum and radar cross-section analysis from coincident ENVISAT ASAR observations and airborne polarimetric radar measurements performed during the VALPARESO experiment

Cited by 2 publications

References 9 publications

Revisiting the Short-Wave Spectrum of the Sea Surface in the Light of the Weighted Curvature Approximation

Revisiting the Short-Wave Spectrum of the Sea Surface in the Light of the Weighted Curvature Approximation

Peakedness Effects in Near-Nadir Radar Observations of the Sea Surface

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