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Communication Dans Un Congrès Année : 1990

Wavelength and orientation resolution comparison of spectral estimators for ocean wave systems on SPOT images

Claude Cariou
Jean-Marc Boucher
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René Garello

Résumé

We present the application of three different 2-D spectral estimators to remote sensing images. One is the well known Bartlett correlogram (BC), the other ones are the maximum entropy (ME) and the harmonic mean (HM) methods, both usually called "high resolution" spectral estimators. After a brief description of these methods, we consider their application to a synthetic image, in order to exhibit their ability to resolve closely-spaced 2-D waves. Then a SPOT image showing three crossed swell fields is analyzed, and results are compared with available buoy data. Finally, by applying these methods to a non-stationary wave field image, we perform appings of the surface phenomena involved in small regions. These experiments show that the HM method is a useful tool to estimate the wavelength and the propagation orientation of wave systems.
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hal-02884844 , version 1 (30-06-2020)

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  • HAL Id : hal-02884844 , version 1

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Claude Cariou, Jean-Marc Boucher, René Garello. Wavelength and orientation resolution comparison of spectral estimators for ocean wave systems on SPOT images. IGARSS'90 : 10th annual International conference on Geoscience and Remote Sensing, May 1990, Washington, United States. pp.1809 - 1812. ⟨hal-02884844⟩
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