Ice Velocity Mapping Using TOPS SAR Data and Offset Tracking
Feature tracking and speckle tracking, are robust techniques to measure the velocity of glaciers and ice sheets. Displacement maps based on TOPS data may have small gaps if the bursts are not handled properly. Ice moving from one burst to a consecutive burst between two observations is not observed...
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ftdtupubl:oai:pure.atira.dk:publications/ea418527-340f-44e7-86a4-e315c6a64cd8 2024-06-23T07:53:19+00:00 Ice Velocity Mapping Using TOPS SAR Data and Offset Tracking Dall, Jørgen Kusk, Anders Nielsen, Ulrik Merryman Boncori, John Peter Ouwehand, L. 2015 https://orbit.dtu.dk/en/publications/ea418527-340f-44e7-86a4-e315c6a64cd8 eng eng https://orbit.dtu.dk/en/publications/ea418527-340f-44e7-86a4-e315c6a64cd8 urn:ISBN:978-92-9221-295-7 info:eu-repo/semantics/closedAccess Dall , J , Kusk , A , Nielsen , U & Merryman Boncori , J P 2015 , Ice Velocity Mapping Using TOPS SAR Data and Offset Tracking . in L Ouwehand (ed.) , Proceedings of 9th International Workshop Fringe 2015 . vol. SP-731 , 9th International Workshop Fringe 2015 , Frascati , Italy , 23/03/2015 . contributionToPeriodical 2015 ftdtupubl 2024-06-04T15:10:52Z Feature tracking and speckle tracking, are robust techniques to measure the velocity of glaciers and ice sheets. Displacement maps based on TOPS data may have small gaps if the bursts are not handled properly. Ice moving from one burst to a consecutive burst between two observations is not observed under the same squint angle, and hence speckle tracking is supposed to fail when cross-correlating consecutive bursts, whereas feature tracking provides the same result as when cross-correlating corresponding bursts. The size of the potential gaps depends on the ice displacement and the choice of Sentinel-1 product, as consecutive bursts overlap in the SLC product but not in the GRD product. An analysis of Sentinel-1 data from Greenland confirms the results expected from theory. Article in Journal/Newspaper Greenland Technical University of Denmark: DTU Orbit Greenland |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
description |
Feature tracking and speckle tracking, are robust techniques to measure the velocity of glaciers and ice sheets. Displacement maps based on TOPS data may have small gaps if the bursts are not handled properly. Ice moving from one burst to a consecutive burst between two observations is not observed under the same squint angle, and hence speckle tracking is supposed to fail when cross-correlating consecutive bursts, whereas feature tracking provides the same result as when cross-correlating corresponding bursts. The size of the potential gaps depends on the ice displacement and the choice of Sentinel-1 product, as consecutive bursts overlap in the SLC product but not in the GRD product. An analysis of Sentinel-1 data from Greenland confirms the results expected from theory. |
author2 |
Ouwehand, L. |
format |
Article in Journal/Newspaper |
author |
Dall, Jørgen Kusk, Anders Nielsen, Ulrik Merryman Boncori, John Peter |
spellingShingle |
Dall, Jørgen Kusk, Anders Nielsen, Ulrik Merryman Boncori, John Peter Ice Velocity Mapping Using TOPS SAR Data and Offset Tracking |
author_facet |
Dall, Jørgen Kusk, Anders Nielsen, Ulrik Merryman Boncori, John Peter |
author_sort |
Dall, Jørgen |
title |
Ice Velocity Mapping Using TOPS SAR Data and Offset Tracking |
title_short |
Ice Velocity Mapping Using TOPS SAR Data and Offset Tracking |
title_full |
Ice Velocity Mapping Using TOPS SAR Data and Offset Tracking |
title_fullStr |
Ice Velocity Mapping Using TOPS SAR Data and Offset Tracking |
title_full_unstemmed |
Ice Velocity Mapping Using TOPS SAR Data and Offset Tracking |
title_sort |
ice velocity mapping using tops sar data and offset tracking |
publishDate |
2015 |
url |
https://orbit.dtu.dk/en/publications/ea418527-340f-44e7-86a4-e315c6a64cd8 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Dall , J , Kusk , A , Nielsen , U & Merryman Boncori , J P 2015 , Ice Velocity Mapping Using TOPS SAR Data and Offset Tracking . in L Ouwehand (ed.) , Proceedings of 9th International Workshop Fringe 2015 . vol. SP-731 , 9th International Workshop Fringe 2015 , Frascati , Italy , 23/03/2015 . |
op_relation |
https://orbit.dtu.dk/en/publications/ea418527-340f-44e7-86a4-e315c6a64cd8 urn:ISBN:978-92-9221-295-7 |
op_rights |
info:eu-repo/semantics/closedAccess |
_version_ |
1802644905344892928 |