On the relationship between sea surface SAR speckle and wind field

In this study, synthetic aperture radar ocean speckle is exploited to infer information on sea surface wind field. The K-distribution is adopted to model the single look complex vertically/vertically-polarized intensity speckle signal measured over sea surface under different wind conditions, i. e.,...

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Bibliographic Details
Published in:OCEANS 2019 - Marseille
Main Authors: Migliaccio M., Buono A., Huang L., Nunziata F.
Other Authors: IEEE, Migliaccio, M., Buono, A., Huang, L., Nunziata, F.
Format: Conference Object
Language:English
Published: Institute of Electrical and Electronics Engineers Inc. 2019
Subjects:
K-distribution
SAR
sea wind
speckle
Iceland
Online Access:http://hdl.handle.net/11367/99710
https://doi.org/10.1109/OCEANSE.2019.8866988
Description
Summary:In this study, synthetic aperture radar ocean speckle is exploited to infer information on sea surface wind field. The K-distribution is adopted to model the single look complex vertically/vertically-polarized intensity speckle signal measured over sea surface under different wind conditions, i. e., wind speed and direction. Experiments undertaken on a large set of Sentinel-1 SAR data collected over the northeastern part of the Atlantic ocean, between southern Iceland and northern Scotland, showed that the shape parameter of the K-distribution is sensitive to both ocean wind field and SAR imaging parameters. In particular, it was shown that the shape parameter decreases when increasing wind speed while its variability becomes significant under crosswind relative azimuth angle and at larger incidence angles.

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