Comparison of ice/water classification in Fram Strait from C- and L-band SAR imagery
ABSTRACT In this paper an algorithm for ice/water classification of C- and L-band dual polarization synthetic aperture radar data is presented. A comparison of the two different frequencies is made in order to investigate the potential to improve classification results with multi-frequency data. The...
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Cambridge University Press (CUP)
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Online Access: | http://dx.doi.org/10.1017/aog.2018.7 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0260305518000071 |
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crcambridgeupr:10.1017/aog.2018.7 2024-09-15T17:39:52+00:00 Comparison of ice/water classification in Fram Strait from C- and L-band SAR imagery Aldenhoff, Wiebke Heuzé, Céline Eriksson, Leif E.B. 2018 http://dx.doi.org/10.1017/aog.2018.7 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0260305518000071 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Annals of Glaciology volume 59, issue 76pt2, page 112-123 ISSN 0260-3055 1727-5644 journal-article 2018 crcambridgeupr https://doi.org/10.1017/aog.2018.7 2024-07-31T04:03:51Z ABSTRACT In this paper an algorithm for ice/water classification of C- and L-band dual polarization synthetic aperture radar data is presented. A comparison of the two different frequencies is made in order to investigate the potential to improve classification results with multi-frequency data. The algorithm is based on backscatter intensities in co- and cross-polarization and autocorrelation as a texture feature. The mapping between image features and ice/water classification is made with a neural network. Accurate ice/water maps for both frequencies are produced by the algorithm and the results of two frequencies generally agree very well. Differences are found in the marginal ice zone, where the time difference between acquisitions causes motion of the ice pack. C-band reliably reproduces the outline of the ice edge, while L-band has its strengths for thin ice/calm water areas within the icepack. The classification shows good agreement with ice/water maps derived from met.no ice-charts and radiometer data from AMSR-2. Variations are found in the marginal ice zone where the generalization of the ice charts and lower accuracy of ice concentration from radiometer data introduce deviations. Usage of high-resolution dual frequency data could be beneficial for improving ice cover information for navigation and modelling. Article in Journal/Newspaper Annals of Glaciology Fram Strait Cambridge University Press Annals of Glaciology 59 76pt2 112 123 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
ABSTRACT In this paper an algorithm for ice/water classification of C- and L-band dual polarization synthetic aperture radar data is presented. A comparison of the two different frequencies is made in order to investigate the potential to improve classification results with multi-frequency data. The algorithm is based on backscatter intensities in co- and cross-polarization and autocorrelation as a texture feature. The mapping between image features and ice/water classification is made with a neural network. Accurate ice/water maps for both frequencies are produced by the algorithm and the results of two frequencies generally agree very well. Differences are found in the marginal ice zone, where the time difference between acquisitions causes motion of the ice pack. C-band reliably reproduces the outline of the ice edge, while L-band has its strengths for thin ice/calm water areas within the icepack. The classification shows good agreement with ice/water maps derived from met.no ice-charts and radiometer data from AMSR-2. Variations are found in the marginal ice zone where the generalization of the ice charts and lower accuracy of ice concentration from radiometer data introduce deviations. Usage of high-resolution dual frequency data could be beneficial for improving ice cover information for navigation and modelling. |
format |
Article in Journal/Newspaper |
author |
Aldenhoff, Wiebke Heuzé, Céline Eriksson, Leif E.B. |
spellingShingle |
Aldenhoff, Wiebke Heuzé, Céline Eriksson, Leif E.B. Comparison of ice/water classification in Fram Strait from C- and L-band SAR imagery |
author_facet |
Aldenhoff, Wiebke Heuzé, Céline Eriksson, Leif E.B. |
author_sort |
Aldenhoff, Wiebke |
title |
Comparison of ice/water classification in Fram Strait from C- and L-band SAR imagery |
title_short |
Comparison of ice/water classification in Fram Strait from C- and L-band SAR imagery |
title_full |
Comparison of ice/water classification in Fram Strait from C- and L-band SAR imagery |
title_fullStr |
Comparison of ice/water classification in Fram Strait from C- and L-band SAR imagery |
title_full_unstemmed |
Comparison of ice/water classification in Fram Strait from C- and L-band SAR imagery |
title_sort |
comparison of ice/water classification in fram strait from c- and l-band sar imagery |
publisher |
Cambridge University Press (CUP) |
publishDate |
2018 |
url |
http://dx.doi.org/10.1017/aog.2018.7 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0260305518000071 |
genre |
Annals of Glaciology Fram Strait |
genre_facet |
Annals of Glaciology Fram Strait |
op_source |
Annals of Glaciology volume 59, issue 76pt2, page 112-123 ISSN 0260-3055 1727-5644 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/aog.2018.7 |
container_title |
Annals of Glaciology |
container_volume |
59 |
container_issue |
76pt2 |
container_start_page |
112 |
op_container_end_page |
123 |
_version_ |
1810483072329580544 |