Detection of 2-D Nearshore Wave Patterns Using Linear Prediction and SAR Data

by Pierre Larouche, Inst Maurice-Lamontagne, Mont-Joli, Canada,
Georges Drapeau, Inst Maurice-Lamontagne, Mont-Joli, Canada,
Claude Cariou, Inst Maurice-Lamontagne, Mont-Joli, Canada,

Document Type: Proceeding Paper

Part of: Coastal Zone '91


Extraction of wave parameters such as wavelength and direction on radar images is normaly done using fast Fourier transforms (FFT) on typical image size of 256 × 256 which may not be appropriate to study nearshore wave patterns. This paper presents a new 2-D spectral estimation technique based on the theory of linear prediction which can perform 2-D spectral estimates on small 32 × 32 images. We also describe an experiment which occurred in the summer of 1990 to test this methodology in a coastal environment and present some preliminary observations on the acquired data set.

Subject Headings: Nearshore | Linear functions | Data collection | Water waves | Fourier analysis | Ocean waves | Wave spectrum | Sea water

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