Coherent large beamwidth processing of radio-echo sounding data
Coherent processing of radio-echo sounding data of polar ice sheets is known to provide an indication of bedrock properties and detection of internal layers. We investigate the benefits of coherent processing of a large azimuth beamwidth to retrieve and characterize the orientation and angular backs...
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Language: | English |
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2018
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ftdoajarticles:oai:doaj.org/article:bad0cdd8e43a4938b6a0d755b7d68055 2023-05-15T16:29:05+02:00 Coherent large beamwidth processing of radio-echo sounding data A. Heister R. Scheiber 2018-09-01T00:00:00Z https://doi.org/10.5194/tc-12-2969-2018 https://doaj.org/article/bad0cdd8e43a4938b6a0d755b7d68055 EN eng Copernicus Publications https://www.the-cryosphere.net/12/2969/2018/tc-12-2969-2018.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-12-2969-2018 1994-0416 1994-0424 https://doaj.org/article/bad0cdd8e43a4938b6a0d755b7d68055 The Cryosphere, Vol 12, Pp 2969-2979 (2018) Environmental sciences GE1-350 Geology QE1-996.5 article 2018 ftdoajarticles https://doi.org/10.5194/tc-12-2969-2018 2022-12-30T22:47:12Z Coherent processing of radio-echo sounding data of polar ice sheets is known to provide an indication of bedrock properties and detection of internal layers. We investigate the benefits of coherent processing of a large azimuth beamwidth to retrieve and characterize the orientation and angular backscattering properties of the surface and subsurface features. MCRDS data acquired over two distinct test areas in Greenland are used to demonstrate the specular backscattering properties of the ice surface and of the internal layers, as well as the much wider angular response of the bedrock. The coupling of internal layers' orientation with the bed topography is shown to increase with depth. Spectral filtering can be used to increase the SNR of the internal layers and mitigate the surface multiple. The variance of the bed backscattering can be used to characterize the bed return specularity. The use of the SAR-focused RES data ensures the correct azimuth positioning of the internal layers for the subsequent slope estimation. Article in Journal/Newspaper Greenland The Cryosphere Directory of Open Access Journals: DOAJ Articles Greenland The Cryosphere 12 9 2969 2979 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 A. Heister R. Scheiber Coherent large beamwidth processing of radio-echo sounding data |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Coherent processing of radio-echo sounding data of polar ice sheets is known to provide an indication of bedrock properties and detection of internal layers. We investigate the benefits of coherent processing of a large azimuth beamwidth to retrieve and characterize the orientation and angular backscattering properties of the surface and subsurface features. MCRDS data acquired over two distinct test areas in Greenland are used to demonstrate the specular backscattering properties of the ice surface and of the internal layers, as well as the much wider angular response of the bedrock. The coupling of internal layers' orientation with the bed topography is shown to increase with depth. Spectral filtering can be used to increase the SNR of the internal layers and mitigate the surface multiple. The variance of the bed backscattering can be used to characterize the bed return specularity. The use of the SAR-focused RES data ensures the correct azimuth positioning of the internal layers for the subsequent slope estimation. |
format |
Article in Journal/Newspaper |
author |
A. Heister R. Scheiber |
author_facet |
A. Heister R. Scheiber |
author_sort |
A. Heister |
title |
Coherent large beamwidth processing of radio-echo sounding data |
title_short |
Coherent large beamwidth processing of radio-echo sounding data |
title_full |
Coherent large beamwidth processing of radio-echo sounding data |
title_fullStr |
Coherent large beamwidth processing of radio-echo sounding data |
title_full_unstemmed |
Coherent large beamwidth processing of radio-echo sounding data |
title_sort |
coherent large beamwidth processing of radio-echo sounding data |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/tc-12-2969-2018 https://doaj.org/article/bad0cdd8e43a4938b6a0d755b7d68055 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland The Cryosphere |
genre_facet |
Greenland The Cryosphere |
op_source |
The Cryosphere, Vol 12, Pp 2969-2979 (2018) |
op_relation |
https://www.the-cryosphere.net/12/2969/2018/tc-12-2969-2018.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-12-2969-2018 1994-0416 1994-0424 https://doaj.org/article/bad0cdd8e43a4938b6a0d755b7d68055 |
op_doi |
https://doi.org/10.5194/tc-12-2969-2018 |
container_title |
The Cryosphere |
container_volume |
12 |
container_issue |
9 |
container_start_page |
2969 |
op_container_end_page |
2979 |
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1766018770251284480 |