HF/VHF Radar Sounding of Ice from Manned and Unmanned Airborne Platforms
Ice thickness and bed topography of fast-flowing outlet glaciers are large sources of uncertainty for the current ice sheet models used to predict future contributions to sea-level rise. Due to a lack of coverage and difficulty in sounding and imaging with ice-penetrating radars, these regions remai...
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Online Access: | http://hdl.handle.net/1808/29737 https://doi.org/10.3390/geosciences8050182 |
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ftunivkansas:oai:kuscholarworks.ku.edu:1808/29737 2023-05-15T15:53:45+02:00 HF/VHF Radar Sounding of Ice from Manned and Unmanned Airborne Platforms Arnold, Emily J. Rodriguez-Morales, Fernando Paden, John Leuschen, Carl keshmiri, Shawn Ewing, Mark Hale, Rick Mahmood, Ali Blevins, Aaron Mishra, Akhilesh Karidi, Teja Miller, Bailey Yan, Stephen Sonntag, John 2019-11-08T14:58:07Z http://hdl.handle.net/1808/29737 https://doi.org/10.3390/geosciences8050182 unknown MDPI Arnold, E.; Rodriguez-Morales, F.; Paden, J.; Leuschen, C.; Keshmiri, S.; Yan, S.; Ewing, M.; Hale, R.; Mahmood, A.; Blevins, A.; Mishra, A.; Karidi, T.; Miller, B.; Sonntag, J. HF/VHF Radar Sounding of Ice from Manned and Unmanned Airborne Platforms. Geosciences 2018, 8, 182. http://hdl.handle.net/1808/29737 doi:10.3390/geosciences8050182 orcid:0000-0003-0775-6284 This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited https://creativecommons.org/licenses/by/4.0/ openAccess CC-BY Remote Sensing ice sheets Glaciers radar unmanned aircraft system UAS Synthetic Aperture Radar SAR Article 2019 ftunivkansas https://doi.org/10.3390/geosciences8050182 2022-08-26T13:24:58Z Ice thickness and bed topography of fast-flowing outlet glaciers are large sources of uncertainty for the current ice sheet models used to predict future contributions to sea-level rise. Due to a lack of coverage and difficulty in sounding and imaging with ice-penetrating radars, these regions remain poorly constrained in models. Increases in off-nadir scattering due to the highly crevassed surfaces, volumetric scattering (due to debris and/or pockets of liquid water), and signal attenuation (due to warmer ice near the bottom) are all impediments in detecting bed-echoes. A set of high-frequency (HF)/very high-frequency (VHF) radars operating at 14 MHz and 30–35 MHz were developed at the University of Kansas to sound temperate ice and outlet glaciers. We have deployed these radars on a small unmanned aircraft system (UAS) and a DHC-6 Twin Otter. For both installations, the system utilized a dipole antenna oriented in the cross-track direction, providing some performance advantages over other temperate ice sounders operating at lower frequencies. In this paper, we describe the platform-sensor systems, field operations, data-processing techniques, and preliminary results. We also compare our results with data from other ice-sounding radars that operate at frequencies both above (Center for Remote Sensing of Ice Sheets (CReSIS) Multichannel Coherent Depth Sounder (MCoRDS)) and below (Jet Propulsion Laboratory (JPL) Warm Ice Sounding Explorer (WISE)) our HF/VHF system. During field campaigns, both unmanned and manned platforms flew closely spaced parallel and repeat flight lines. We examine these data sets to determine image coherency between flight lines and discuss the feasibility of forming 2D synthetic apertures by using such a mission approach. KU Endowment Association and the National Science Foundation (NSF) under grant ANT-0424589 NSF (ANT-0424589) Article in Journal/Newspaper Center for Remote Sensing of Ice Sheets (CReSIS) Ice Sheet The University of Kansas: KU ScholarWorks Geosciences 8 5 182 |
institution |
Open Polar |
collection |
The University of Kansas: KU ScholarWorks |
op_collection_id |
ftunivkansas |
language |
unknown |
topic |
Remote Sensing ice sheets Glaciers radar unmanned aircraft system UAS Synthetic Aperture Radar SAR |
spellingShingle |
Remote Sensing ice sheets Glaciers radar unmanned aircraft system UAS Synthetic Aperture Radar SAR Arnold, Emily J. Rodriguez-Morales, Fernando Paden, John Leuschen, Carl keshmiri, Shawn Ewing, Mark Hale, Rick Mahmood, Ali Blevins, Aaron Mishra, Akhilesh Karidi, Teja Miller, Bailey Yan, Stephen Sonntag, John HF/VHF Radar Sounding of Ice from Manned and Unmanned Airborne Platforms |
topic_facet |
Remote Sensing ice sheets Glaciers radar unmanned aircraft system UAS Synthetic Aperture Radar SAR |
description |
Ice thickness and bed topography of fast-flowing outlet glaciers are large sources of uncertainty for the current ice sheet models used to predict future contributions to sea-level rise. Due to a lack of coverage and difficulty in sounding and imaging with ice-penetrating radars, these regions remain poorly constrained in models. Increases in off-nadir scattering due to the highly crevassed surfaces, volumetric scattering (due to debris and/or pockets of liquid water), and signal attenuation (due to warmer ice near the bottom) are all impediments in detecting bed-echoes. A set of high-frequency (HF)/very high-frequency (VHF) radars operating at 14 MHz and 30–35 MHz were developed at the University of Kansas to sound temperate ice and outlet glaciers. We have deployed these radars on a small unmanned aircraft system (UAS) and a DHC-6 Twin Otter. For both installations, the system utilized a dipole antenna oriented in the cross-track direction, providing some performance advantages over other temperate ice sounders operating at lower frequencies. In this paper, we describe the platform-sensor systems, field operations, data-processing techniques, and preliminary results. We also compare our results with data from other ice-sounding radars that operate at frequencies both above (Center for Remote Sensing of Ice Sheets (CReSIS) Multichannel Coherent Depth Sounder (MCoRDS)) and below (Jet Propulsion Laboratory (JPL) Warm Ice Sounding Explorer (WISE)) our HF/VHF system. During field campaigns, both unmanned and manned platforms flew closely spaced parallel and repeat flight lines. We examine these data sets to determine image coherency between flight lines and discuss the feasibility of forming 2D synthetic apertures by using such a mission approach. KU Endowment Association and the National Science Foundation (NSF) under grant ANT-0424589 NSF (ANT-0424589) |
format |
Article in Journal/Newspaper |
author |
Arnold, Emily J. Rodriguez-Morales, Fernando Paden, John Leuschen, Carl keshmiri, Shawn Ewing, Mark Hale, Rick Mahmood, Ali Blevins, Aaron Mishra, Akhilesh Karidi, Teja Miller, Bailey Yan, Stephen Sonntag, John |
author_facet |
Arnold, Emily J. Rodriguez-Morales, Fernando Paden, John Leuschen, Carl keshmiri, Shawn Ewing, Mark Hale, Rick Mahmood, Ali Blevins, Aaron Mishra, Akhilesh Karidi, Teja Miller, Bailey Yan, Stephen Sonntag, John |
author_sort |
Arnold, Emily J. |
title |
HF/VHF Radar Sounding of Ice from Manned and Unmanned Airborne Platforms |
title_short |
HF/VHF Radar Sounding of Ice from Manned and Unmanned Airborne Platforms |
title_full |
HF/VHF Radar Sounding of Ice from Manned and Unmanned Airborne Platforms |
title_fullStr |
HF/VHF Radar Sounding of Ice from Manned and Unmanned Airborne Platforms |
title_full_unstemmed |
HF/VHF Radar Sounding of Ice from Manned and Unmanned Airborne Platforms |
title_sort |
hf/vhf radar sounding of ice from manned and unmanned airborne platforms |
publisher |
MDPI |
publishDate |
2019 |
url |
http://hdl.handle.net/1808/29737 https://doi.org/10.3390/geosciences8050182 |
genre |
Center for Remote Sensing of Ice Sheets (CReSIS) Ice Sheet |
genre_facet |
Center for Remote Sensing of Ice Sheets (CReSIS) Ice Sheet |
op_relation |
Arnold, E.; Rodriguez-Morales, F.; Paden, J.; Leuschen, C.; Keshmiri, S.; Yan, S.; Ewing, M.; Hale, R.; Mahmood, A.; Blevins, A.; Mishra, A.; Karidi, T.; Miller, B.; Sonntag, J. HF/VHF Radar Sounding of Ice from Manned and Unmanned Airborne Platforms. Geosciences 2018, 8, 182. http://hdl.handle.net/1808/29737 doi:10.3390/geosciences8050182 orcid:0000-0003-0775-6284 |
op_rights |
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited https://creativecommons.org/licenses/by/4.0/ openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3390/geosciences8050182 |
container_title |
Geosciences |
container_volume |
8 |
container_issue |
5 |
container_start_page |
182 |
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1766388933746229248 |