A new azimuth cut-off procedure to retrieve significant wave height under high wind regimes
2018 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2018), Observing, Understanding And ForecastingThe Dynamics Of Our Planet, 22-27 July 2018, Valencia, Spain.-- 3 pages, 3 figures
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| Format: | capítulo de libro biblioteca |
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Institute of Electrical and Electronics Engineers
2018
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| Subjects: | SAR, Wind speed, Azimuth cut-off, Significant wave height, |
| Online Access: | http://hdl.handle.net/10261/180523 |
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dig-icm-es-10261-1805232023-01-04T09:38:21Z A new azimuth cut-off procedure to retrieve significant wave height under high wind regimes Corcione, Valeria Grieco, Giuseppe Portabella, Marcos Nunziata, Ferdinando Migliaccio, Maurizio SAR Wind speed Azimuth cut-off Significant wave height 2018 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2018), Observing, Understanding And ForecastingThe Dynamics Of Our Planet, 22-27 July 2018, Valencia, Spain.-- 3 pages, 3 figures In this study, the azimuth cut-off approach, which is typically adopted to estimate wind speed from Synthetic Aperture Radar (SAR) imagery collected under nominal wind conditions, is discussed with respect to high wind regime cases. First, the key roles played by the pixel spacing, the size of the boxes used to partition the SAR imagery and the image texture (homogeneity) are discussed in terms of their effects on the azimuth cut-off (λc) estimation. Then, the reliability of the λc estimation is analyzed by measuring the distance between the measured and fitted autocorrelation functions (ACFs). This analysis shows that it is of paramount importance to filter unfeasible/unreliable λc values. To identify those values in an objective way a criterion is proposed that is based on the χ2 test performed over a large dataset of Sentinel-l SAR imagery. The effectiveness of the χ2 test is verified by correlating the accepted estimates against auxiliary significant wave height data Peer Reviewed 2019-04-25T08:34:26Z 2019-04-25T08:34:26Z 2018 2019-04-25T08:34:26Z capítulo de libro http://purl.org/coar/resource_type/c_3248 isbn: 978-1-5386-7150-4 2018 IEEE International Geoscience and Remote Sensing Symposium : Proceedings (2018) http://hdl.handle.net/10261/180523 10.1109/IGARSS.2018.8518342 https://doi.org/ 10.1109/IGARSS.2018.8518342 Sí none Institute of Electrical and Electronics Engineers |
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SAR Wind speed Azimuth cut-off Significant wave height SAR Wind speed Azimuth cut-off Significant wave height |
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SAR Wind speed Azimuth cut-off Significant wave height SAR Wind speed Azimuth cut-off Significant wave height Corcione, Valeria Grieco, Giuseppe Portabella, Marcos Nunziata, Ferdinando Migliaccio, Maurizio A new azimuth cut-off procedure to retrieve significant wave height under high wind regimes |
| description |
2018 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2018), Observing, Understanding And ForecastingThe Dynamics Of Our Planet, 22-27 July 2018, Valencia, Spain.-- 3 pages, 3 figures |
| format |
capítulo de libro |
| topic_facet |
SAR Wind speed Azimuth cut-off Significant wave height |
| author |
Corcione, Valeria Grieco, Giuseppe Portabella, Marcos Nunziata, Ferdinando Migliaccio, Maurizio |
| author_facet |
Corcione, Valeria Grieco, Giuseppe Portabella, Marcos Nunziata, Ferdinando Migliaccio, Maurizio |
| author_sort |
Corcione, Valeria |
| title |
A new azimuth cut-off procedure to retrieve significant wave height under high wind regimes |
| title_short |
A new azimuth cut-off procedure to retrieve significant wave height under high wind regimes |
| title_full |
A new azimuth cut-off procedure to retrieve significant wave height under high wind regimes |
| title_fullStr |
A new azimuth cut-off procedure to retrieve significant wave height under high wind regimes |
| title_full_unstemmed |
A new azimuth cut-off procedure to retrieve significant wave height under high wind regimes |
| title_sort |
new azimuth cut-off procedure to retrieve significant wave height under high wind regimes |
| publisher |
Institute of Electrical and Electronics Engineers |
| publishDate |
2018 |
| url |
http://hdl.handle.net/10261/180523 |
| work_keys_str_mv |
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