Coastal sea level from inland CryoSat-2 interferometric SAR altimetry
The European Space Agency's CryoSat-2 satellite can operate in a novel synthetic aperture radar interferometric (SARIn) mode where its nominal footprint (swath) is observed by two antennas and the phase difference between the signals is used to determination the exact location of the scatterer...
Published in: | Geophysical Research Letters |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2015
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Online Access: | https://orbit.dtu.dk/en/publications/8310aea1-49b4-4483-b791-a6236a09745f https://doi.org/10.1002/2015GL063131 |
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ftdtupubl:oai:pure.atira.dk:publications/8310aea1-49b4-4483-b791-a6236a09745f 2024-05-19T07:41:21+00:00 Coastal sea level from inland CryoSat-2 interferometric SAR altimetry Abulaitijiang, Adili Andersen, Ole Baltazar Stenseng, Lars 2015 https://orbit.dtu.dk/en/publications/8310aea1-49b4-4483-b791-a6236a09745f https://doi.org/10.1002/2015GL063131 eng eng https://orbit.dtu.dk/en/publications/8310aea1-49b4-4483-b791-a6236a09745f info:eu-repo/semantics/closedAccess Abulaitijiang , A , Andersen , O B & Stenseng , L 2015 , ' Coastal sea level from inland CryoSat-2 interferometric SAR altimetry ' , Geophysical Research Letters , vol. 42 , no. 6 , pp. 1841-1847 . https://doi.org/10.1002/2015GL063131 Altimetry SAR interferometry Interferometry Satellites Space-based radar Synthetic aperture radar Coastal sea level European Space Agency Interferometric SAR Phase difference Phase wrapping Track direction Sea level article 2015 ftdtupubl https://doi.org/10.1002/2015GL063131 2024-05-01T00:21:07Z The European Space Agency's CryoSat-2 satellite can operate in a novel synthetic aperture radar interferometric (SARIn) mode where its nominal footprint (swath) is observed by two antennas and the phase difference between the signals is used to determination the exact location of the scatterer through an off-nadir correction. The potential of SARIn for sea level determination is investigated over the fjords of Eastern Greenland. In principle the satellite should only track sea level within its nominal footprint of 7km across track, but we observe that scattering targets (fjords) within twice its nominal footprint are frequently observed but mislocated in CryoSat-2 due to phase wrapping. We devised a way to relocate the observations and correct the range accordingly. When CryoSat-2 is flying inland we consequently observed that the satellite occasionally provide valid sea level in fjords up to 13km away in the across-track direction. Article in Journal/Newspaper Greenland Technical University of Denmark: DTU Orbit Geophysical Research Letters 42 6 1841 1847 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Altimetry SAR interferometry Interferometry Satellites Space-based radar Synthetic aperture radar Coastal sea level European Space Agency Interferometric SAR Phase difference Phase wrapping Track direction Sea level |
spellingShingle |
Altimetry SAR interferometry Interferometry Satellites Space-based radar Synthetic aperture radar Coastal sea level European Space Agency Interferometric SAR Phase difference Phase wrapping Track direction Sea level Abulaitijiang, Adili Andersen, Ole Baltazar Stenseng, Lars Coastal sea level from inland CryoSat-2 interferometric SAR altimetry |
topic_facet |
Altimetry SAR interferometry Interferometry Satellites Space-based radar Synthetic aperture radar Coastal sea level European Space Agency Interferometric SAR Phase difference Phase wrapping Track direction Sea level |
description |
The European Space Agency's CryoSat-2 satellite can operate in a novel synthetic aperture radar interferometric (SARIn) mode where its nominal footprint (swath) is observed by two antennas and the phase difference between the signals is used to determination the exact location of the scatterer through an off-nadir correction. The potential of SARIn for sea level determination is investigated over the fjords of Eastern Greenland. In principle the satellite should only track sea level within its nominal footprint of 7km across track, but we observe that scattering targets (fjords) within twice its nominal footprint are frequently observed but mislocated in CryoSat-2 due to phase wrapping. We devised a way to relocate the observations and correct the range accordingly. When CryoSat-2 is flying inland we consequently observed that the satellite occasionally provide valid sea level in fjords up to 13km away in the across-track direction. |
format |
Article in Journal/Newspaper |
author |
Abulaitijiang, Adili Andersen, Ole Baltazar Stenseng, Lars |
author_facet |
Abulaitijiang, Adili Andersen, Ole Baltazar Stenseng, Lars |
author_sort |
Abulaitijiang, Adili |
title |
Coastal sea level from inland CryoSat-2 interferometric SAR altimetry |
title_short |
Coastal sea level from inland CryoSat-2 interferometric SAR altimetry |
title_full |
Coastal sea level from inland CryoSat-2 interferometric SAR altimetry |
title_fullStr |
Coastal sea level from inland CryoSat-2 interferometric SAR altimetry |
title_full_unstemmed |
Coastal sea level from inland CryoSat-2 interferometric SAR altimetry |
title_sort |
coastal sea level from inland cryosat-2 interferometric sar altimetry |
publishDate |
2015 |
url |
https://orbit.dtu.dk/en/publications/8310aea1-49b4-4483-b791-a6236a09745f https://doi.org/10.1002/2015GL063131 |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Abulaitijiang , A , Andersen , O B & Stenseng , L 2015 , ' Coastal sea level from inland CryoSat-2 interferometric SAR altimetry ' , Geophysical Research Letters , vol. 42 , no. 6 , pp. 1841-1847 . https://doi.org/10.1002/2015GL063131 |
op_relation |
https://orbit.dtu.dk/en/publications/8310aea1-49b4-4483-b791-a6236a09745f |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1002/2015GL063131 |
container_title |
Geophysical Research Letters |
container_volume |
42 |
container_issue |
6 |
container_start_page |
1841 |
op_container_end_page |
1847 |
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1799480955003469824 |