Accuracy assessment and waveform analysis of CryoSat-2 SARIn mode data over Antarctica
The new synthetic aperture radar interferometric (SARIn) measurement mode of CryoSat-2 provides better performance on the rough topography of the ice sheet margins than that of conventional radar altimetry. We assess the accuracy of CryoSat-2 SARIn mode data from Baseline C product of the European S...
Published in: | International Journal of Remote Sensing |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2019
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Online Access: | https://hdl.handle.net/1983/e5e92883-8c6a-41d1-9353-e06a26531d8a https://research-information.bris.ac.uk/en/publications/e5e92883-8c6a-41d1-9353-e06a26531d8a https://doi.org/10.1080/01431161.2019.1610985 http://www.scopus.com/inward/record.url?scp=85065213607&partnerID=8YFLogxK |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/e5e92883-8c6a-41d1-9353-e06a26531d8a 2024-04-28T08:00:23+00:00 Accuracy assessment and waveform analysis of CryoSat-2 SARIn mode data over Antarctica Wang, Fang Bamber, Jonathan L. Yang, Shuangbao Cheng, Xiao Liu, Shubin Zhang, Youzhi Chi, Yunping 2019-11-17 https://hdl.handle.net/1983/e5e92883-8c6a-41d1-9353-e06a26531d8a https://research-information.bris.ac.uk/en/publications/e5e92883-8c6a-41d1-9353-e06a26531d8a https://doi.org/10.1080/01431161.2019.1610985 http://www.scopus.com/inward/record.url?scp=85065213607&partnerID=8YFLogxK eng eng info:eu-repo/grantAgreement/EC/H2020/694188 https://research-information.bris.ac.uk/en/publications/e5e92883-8c6a-41d1-9353-e06a26531d8a info:eu-repo/semantics/restrictedAccess Wang , F , Bamber , J L , Yang , S , Cheng , X , Liu , S , Zhang , Y & Chi , Y 2019 , ' Accuracy assessment and waveform analysis of CryoSat-2 SARIn mode data over Antarctica ' , International Journal of Remote Sensing , vol. 40 , no. 22 , pp. 8418-8431 . https://doi.org/10.1080/01431161.2019.1610985 /dk/atira/pure/core/keywords/globalmass name=GlobalMass article 2019 ftubristolcris https://doi.org/10.1080/01431161.2019.1610985 2024-04-03T15:58:53Z The new synthetic aperture radar interferometric (SARIn) measurement mode of CryoSat-2 provides better performance on the rough topography of the ice sheet margins than that of conventional radar altimetry. We assess the accuracy of CryoSat-2 SARIn mode data from Baseline C product of the European Space Agency (ESA), through comparison with two airborne laser altimeters on NASA IceBridge missions. The time difference between two compared data was limited to 30 days resulting in a reduction in the random error of ~0.3 m. We also assess the sensitivity of ESA retracker to surface slope, roughness and firn density using the mean waveform and retracked bin derived from CryoSat-2 Level 1B and Level 2i product. The ESA retracker appears to be sensitive to the surface slope and roughness according to the different leading edge shape and the retracked bin locations, however, not sensitive to the different firn density over four ice shelves. The modelled echo waveforms as SARIn are also used to analyse the impacts of surface characteristics (slope, roughness, and penetration depth) on echo waveform shape. It illustrates that the processes for ESA product fail to differentiate the changes in near-surface dielectric properties and determine radar-signal-penetration depth. Article in Journal/Newspaper Antarc* Antarctica Ice Sheet Ice Shelves University of Bristol: Bristol Research International Journal of Remote Sensing 40 22 8418 8431 |
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Open Polar |
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University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
/dk/atira/pure/core/keywords/globalmass name=GlobalMass |
spellingShingle |
/dk/atira/pure/core/keywords/globalmass name=GlobalMass Wang, Fang Bamber, Jonathan L. Yang, Shuangbao Cheng, Xiao Liu, Shubin Zhang, Youzhi Chi, Yunping Accuracy assessment and waveform analysis of CryoSat-2 SARIn mode data over Antarctica |
topic_facet |
/dk/atira/pure/core/keywords/globalmass name=GlobalMass |
description |
The new synthetic aperture radar interferometric (SARIn) measurement mode of CryoSat-2 provides better performance on the rough topography of the ice sheet margins than that of conventional radar altimetry. We assess the accuracy of CryoSat-2 SARIn mode data from Baseline C product of the European Space Agency (ESA), through comparison with two airborne laser altimeters on NASA IceBridge missions. The time difference between two compared data was limited to 30 days resulting in a reduction in the random error of ~0.3 m. We also assess the sensitivity of ESA retracker to surface slope, roughness and firn density using the mean waveform and retracked bin derived from CryoSat-2 Level 1B and Level 2i product. The ESA retracker appears to be sensitive to the surface slope and roughness according to the different leading edge shape and the retracked bin locations, however, not sensitive to the different firn density over four ice shelves. The modelled echo waveforms as SARIn are also used to analyse the impacts of surface characteristics (slope, roughness, and penetration depth) on echo waveform shape. It illustrates that the processes for ESA product fail to differentiate the changes in near-surface dielectric properties and determine radar-signal-penetration depth. |
format |
Article in Journal/Newspaper |
author |
Wang, Fang Bamber, Jonathan L. Yang, Shuangbao Cheng, Xiao Liu, Shubin Zhang, Youzhi Chi, Yunping |
author_facet |
Wang, Fang Bamber, Jonathan L. Yang, Shuangbao Cheng, Xiao Liu, Shubin Zhang, Youzhi Chi, Yunping |
author_sort |
Wang, Fang |
title |
Accuracy assessment and waveform analysis of CryoSat-2 SARIn mode data over Antarctica |
title_short |
Accuracy assessment and waveform analysis of CryoSat-2 SARIn mode data over Antarctica |
title_full |
Accuracy assessment and waveform analysis of CryoSat-2 SARIn mode data over Antarctica |
title_fullStr |
Accuracy assessment and waveform analysis of CryoSat-2 SARIn mode data over Antarctica |
title_full_unstemmed |
Accuracy assessment and waveform analysis of CryoSat-2 SARIn mode data over Antarctica |
title_sort |
accuracy assessment and waveform analysis of cryosat-2 sarin mode data over antarctica |
publishDate |
2019 |
url |
https://hdl.handle.net/1983/e5e92883-8c6a-41d1-9353-e06a26531d8a https://research-information.bris.ac.uk/en/publications/e5e92883-8c6a-41d1-9353-e06a26531d8a https://doi.org/10.1080/01431161.2019.1610985 http://www.scopus.com/inward/record.url?scp=85065213607&partnerID=8YFLogxK |
genre |
Antarc* Antarctica Ice Sheet Ice Shelves |
genre_facet |
Antarc* Antarctica Ice Sheet Ice Shelves |
op_source |
Wang , F , Bamber , J L , Yang , S , Cheng , X , Liu , S , Zhang , Y & Chi , Y 2019 , ' Accuracy assessment and waveform analysis of CryoSat-2 SARIn mode data over Antarctica ' , International Journal of Remote Sensing , vol. 40 , no. 22 , pp. 8418-8431 . https://doi.org/10.1080/01431161.2019.1610985 |
op_relation |
info:eu-repo/grantAgreement/EC/H2020/694188 https://research-information.bris.ac.uk/en/publications/e5e92883-8c6a-41d1-9353-e06a26531d8a |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1080/01431161.2019.1610985 |
container_title |
International Journal of Remote Sensing |
container_volume |
40 |
container_issue |
22 |
container_start_page |
8418 |
op_container_end_page |
8431 |
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1797572634919043072 |