An automatic approach to map refreezing ice in radar sounder data
Radar sounders mounted on airborne platforms have acquired data of the subsurface of the Earth's icy areas over the last decades. These data, called radargrams, contain information on the dielectric discontinuities in the ice-sheets, and thus on the buried geological structures and the related...
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ftfbkssleriris:oai:cris.fbk.eu:11582/319933 2023-11-12T04:15:50+01:00 An automatic approach to map refreezing ice in radar sounder data Donini, Elena Thakur, Sanchari Bovolo, Francesca Bruzzone, Lorenzo Donini, Elena Thakur, Sanchari Bovolo, Francesca Bruzzone, Lorenzo 2019 http://hdl.handle.net/11582/319933 https://doi.org/10.1117/12.2533169 https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11155/2533169/An-automatic-approach-to-map-refreezing-ice-in-radar-sounder/10.1117/12.2533169.short?SSO=1 eng eng info:eu-repo/semantics/altIdentifier/isbn/9781510630130 info:eu-repo/semantics/altIdentifier/isbn/9781510630147 ispartofbook:Proc. SPIE 11155, Image and Signal Processing for Remote Sensing XXV SPIE Remote Sensing, 2019 firstpage:45 http://hdl.handle.net/11582/319933 doi:10.1117/12.2533169 https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11155/2533169/An-automatic-approach-to-map-refreezing-ice-in-radar-sounder/10.1117/12.2533169.short?SSO=1 info:eu-repo/semantics/conferenceObject 2019 ftfbkssleriris https://doi.org/10.1117/12.2533169 2023-10-24T21:06:08Z Radar sounders mounted on airborne platforms have acquired data of the subsurface of the Earth's icy areas over the last decades. These data, called radargrams, contain information on the dielectric discontinuities in the ice-sheets, and thus on the buried geological structures and the related processes. Conventionally, these structures have been characterized and mapped by visually inspecting the radargrams. However, visual inspection is subjective and time-consuming and can lead to misinterpretations. Recently, state-of-the-art automatic techniques are proposed to map the position of the bedrock, the ice layering, and the noise in the radargram. However, there are no automatic techniques for mapping the basal refreezing, which is an important ice target that controls the rate of sea-ward ow of the ice-sheets. This paper proposes an automatic method to map the refreezing ice in radargrams. We model the refreezing ice considering its geophysical and radiometric properties. Then, we design a set of features considering this model to perform a classification of the radargrams into four classes, i.e., ice layering, echo-free zone (EFZ) and thermal noise, bedrock, and the refreezing ice. We applied the proposed method to radargrams acquired in the north Greenland by Multichannel Coherent Radar Depth Sounder (MCoRDS3), a radar sounder designed by the Center for Remote Sensing of Ice Sheets (CReSIS). The results indicate a good overall accuracy. The accuracy of refreezing ice is high, while that of the other classes is comparable with the state-of-the-art techniques. The results indicate the effectiveness of the proposed features in mapping the refreezing ice. Conference Object Center for Remote Sensing of Ice Sheets (CReSIS) Greenland North Greenland Fondazione Bruno Kessler: CINECA IRIS Greenland Image and Signal Processing for Remote Sensing XXV 45 |
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Open Polar |
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Fondazione Bruno Kessler: CINECA IRIS |
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ftfbkssleriris |
language |
English |
description |
Radar sounders mounted on airborne platforms have acquired data of the subsurface of the Earth's icy areas over the last decades. These data, called radargrams, contain information on the dielectric discontinuities in the ice-sheets, and thus on the buried geological structures and the related processes. Conventionally, these structures have been characterized and mapped by visually inspecting the radargrams. However, visual inspection is subjective and time-consuming and can lead to misinterpretations. Recently, state-of-the-art automatic techniques are proposed to map the position of the bedrock, the ice layering, and the noise in the radargram. However, there are no automatic techniques for mapping the basal refreezing, which is an important ice target that controls the rate of sea-ward ow of the ice-sheets. This paper proposes an automatic method to map the refreezing ice in radargrams. We model the refreezing ice considering its geophysical and radiometric properties. Then, we design a set of features considering this model to perform a classification of the radargrams into four classes, i.e., ice layering, echo-free zone (EFZ) and thermal noise, bedrock, and the refreezing ice. We applied the proposed method to radargrams acquired in the north Greenland by Multichannel Coherent Radar Depth Sounder (MCoRDS3), a radar sounder designed by the Center for Remote Sensing of Ice Sheets (CReSIS). The results indicate a good overall accuracy. The accuracy of refreezing ice is high, while that of the other classes is comparable with the state-of-the-art techniques. The results indicate the effectiveness of the proposed features in mapping the refreezing ice. |
author2 |
Donini, Elena Thakur, Sanchari Bovolo, Francesca Bruzzone, Lorenzo |
format |
Conference Object |
author |
Donini, Elena Thakur, Sanchari Bovolo, Francesca Bruzzone, Lorenzo |
spellingShingle |
Donini, Elena Thakur, Sanchari Bovolo, Francesca Bruzzone, Lorenzo An automatic approach to map refreezing ice in radar sounder data |
author_facet |
Donini, Elena Thakur, Sanchari Bovolo, Francesca Bruzzone, Lorenzo |
author_sort |
Donini, Elena |
title |
An automatic approach to map refreezing ice in radar sounder data |
title_short |
An automatic approach to map refreezing ice in radar sounder data |
title_full |
An automatic approach to map refreezing ice in radar sounder data |
title_fullStr |
An automatic approach to map refreezing ice in radar sounder data |
title_full_unstemmed |
An automatic approach to map refreezing ice in radar sounder data |
title_sort |
automatic approach to map refreezing ice in radar sounder data |
publishDate |
2019 |
url |
http://hdl.handle.net/11582/319933 https://doi.org/10.1117/12.2533169 https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11155/2533169/An-automatic-approach-to-map-refreezing-ice-in-radar-sounder/10.1117/12.2533169.short?SSO=1 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Center for Remote Sensing of Ice Sheets (CReSIS) Greenland North Greenland |
genre_facet |
Center for Remote Sensing of Ice Sheets (CReSIS) Greenland North Greenland |
op_relation |
info:eu-repo/semantics/altIdentifier/isbn/9781510630130 info:eu-repo/semantics/altIdentifier/isbn/9781510630147 ispartofbook:Proc. SPIE 11155, Image and Signal Processing for Remote Sensing XXV SPIE Remote Sensing, 2019 firstpage:45 http://hdl.handle.net/11582/319933 doi:10.1117/12.2533169 https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11155/2533169/An-automatic-approach-to-map-refreezing-ice-in-radar-sounder/10.1117/12.2533169.short?SSO=1 |
op_doi |
https://doi.org/10.1117/12.2533169 |
container_title |
Image and Signal Processing for Remote Sensing XXV |
container_start_page |
45 |
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1782333094157615104 |