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Imaging of Snow/Ice Subsurface Features from Airborne Sar At UHF, L And X Band. The Onera Sar Campaign in South Greenland

H. M-J. Cantalloube
2019 IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium  
Three sites were imaged, one in the accumulation zone North of the polar circle (East of Kangerlussuaq airport), one in the accumulation zone in a warmer southern area (East of Narsassuaq airport) and  ...  An acquisition campaign of the ONERA airborne synthetic aperture radar system RAMSES have been set up on the Greenland ice-shelf to assess the detectability of buried objects and subsurface feature through  ...  RESULTS FROM NADIR LOOKING (SOUNDING) SAR IMAGE MODE Though the antennae were pointed to the side (45 • down wing at UHF & L band and 30 or 50 • at X band), significant side lobe (especially for V polarisation  ... 
doi:10.1109/igarss.2019.8898600 dblp:conf/igarss/Cantalloube19 fatcat:xlt67gjomrdqvdpxfbpcjjd2da

Onera Campaign in South Greenland for Imaging of Snow/Ice Subsurface Features from Airborne SAR

Hubert M.J. Cantalloube
2019 2019 International Radar Conference (RADAR)  
The engine fragment plume of the unconfined engine #4 failure of the F-HPJE (about 190 days earlier) was in the middle of the percolated accumulation zone, providing several known buried fragments, as  ...  Three bands where investigated UHF, L and X band expecting a tradeoff between cover penetration and target radar cross-section, the latter being critical due to the expected high clutter radar cross-section  ...  This was later corroborated by comparing the ice shelf altitude derived from LIDAR measurement and radar interferometry.  ... 
doi:10.1109/radar41533.2019.171403 fatcat:nwsmtaicencfnbsknikp4o5c2e

Table of contents

2020 IEEE Transactions on Geoscience and Remote Sensing  
Eltoft 5162 Opposite-Side Ambiguities in Radar Sounding Interferometry ................................................................. ..............................................................  ...  Polyushkina 5058 Processing, Sensors and Systems for: Radar Data Ambiguity Function of MIMO Radar Based on Quasi-Orthogonal Ultrawideband-Throb Signals ........................ ........................  ... 
doi:10.1109/tgrs.2020.2998593 fatcat:6li5sdy3nrfnxbveudd77nj5ay

Observations of colocated optical and radar aurora

H. Bahcivan, D. L. Hysell, D. Lummerzheim, M. F. Larsen, R. F. Pfaff
2006 Journal of Geophysical Research  
In addition, in situ rocket electric field measurements in the vicinity of an auroral arc are presented in a separate case study.  ...  The radar aurora is the backscattering of radar waves from these irregularities.  ...  Ambiguity in azimuth and elevation of the backscatter is resolved using interferometry and aperture synthesis imaging [Hysell and Chau, 2006] .  ... 
doi:10.1029/2006ja011923 fatcat:zf6zvqjjrrfoxawgzpugfuh5xe

Radar mapping of Isunnguata Sermia, Greenland

K. Jezek, X. Wu, J. Paden, C. Leuschen
2013 Journal of Glaciology  
Ice thickness estimates using advanced nadir sounding and tomographic radar processing techniques are compared and combined in a study of Isunnguata Sermia glacier, Greenland.  ...  Analysis shows that tomographic data better capture short wavelength (1–2 km) patterns in basal terrain, but interpolated nadir sounding data yield more spatially extensive and continuous coverage across  ...  Off nadir, there may also be simultaneous echoes from the base originating from the opposite sides of the airplane. In addition, there will be thermal and other noise sources.  ... 
doi:10.3189/2013jog12j248 fatcat:hntkqk6o6bhqdk5b2rgxuv72b4

Radio-Frequency Interferometry—A new technique For studying glaciers

D. W. Strangway, Gene Simmons, G. Latorraca, R. Watts, L. Bannister, R. Baker, J. D. Redman, J. R. Rossiter
1974 Journal of Glaciology  
A new method of electromagnetic sounding in resistive electrical environments has been developed for use in lunar exploration. It is applicable to the study of terrestrial glaciers and ice sheets.  ...  0.35 (where f is in MHz).  ...  ACKNOWLEDGEMENTS We appreciate permission from the Canadian National Park Service to work in Jasper National Park. Financial support was provided by NASA under Contract NASg-11540.  ... 
doi:10.1017/s0022143000023431 fatcat:cmw5zxokijf7zoh3w365ztlzoi

Imaging radar observations and theory of type I and type II quasi-periodic echoes

D. L. Hysell
2002 Journal of Geophysical Research  
Midlatitude E region plasma irregularities have been investigated using the Middle and Upper Atmosphere (MU) radar in Shigaraki, Japan, and the Clemson 30 MHz radar in South Carolina, USA.  ...  Several long, continuous bands of scatterers are also evident in the radar images. Received X; revised X; accepted X.  ...  Larsen for helping with the fielding and operation of the Clemson radar. The MU radar belongs to and is operated by the Radio Science Center for Space and Atmosphere (RASC) of Kyoto University.  ... 
doi:10.1029/2002ja009292 fatcat:k4lz5yxlv5efvbiixzvbcm7glu

Ocean Surface Observations Using the TanDEM-X Satellite Formation

Steffen Suchandt, Hartmut Runge
2015 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing  
Index Terms-Ocean surface currents, SAR along-track interferometry (ATI), TanDEM-X.  ...  This way, radar imaging of surface currents with unprecedented accuracy, high spatial resolution and wide coverage at the same time becomes possible.  ...  In the uncorrected case (a), implausible jumps of the flow to the opposite direction (blue) are visible, which correspond to untreated phase ambiguities.  ... 
doi:10.1109/jstars.2015.2446893 fatcat:k2umox55ubbxjnniicsuk3k5aa

Interferometric synthetic-aperture radar (InSAR) [chapter]

Daniel Dzurisin, Zhong Lu
2007 Volcano Deformation  
Side-looking radar systems are classified as either real-aperture (called SLAR for sidelooking airborne radar or SLR for side-looking radar) or synthetic-aperture radar (SAR).  ...  The anomalies will have similar shapes and sizes but opposite signs, Principles of SAR interferometry 179 Figure 5 .15.  ... 
doi:10.1007/978-3-540-49302-0_5 fatcat:ifnqjgd5ozfspnuchxbwrqptw4

Synthetic aperture radar interferometry

P.A. Rosen, S. Hensley, I.R. Joughin, F.K. Li, S.N. Madsen, E. Rodriguez, R.M. Goldstein
2000 Proceedings of the IEEE  
By exploiting the phase of the coherent radar signal, interferometry has transformed radar remote sensing from a largely interpretive science to a quantitative tool, with applications in cartography, geodesy  ...  Synthetic aperture radar interferometry is an imaging technique for measuring the topography of a surface, its changes over time, and other changes in the detailed characteristics of the surface.  ...  Rogers and Ingalls [7] reported the first application of interferometry to radar, removing the "north-south" ambiguity in range-range rate radar maps of the planet Venus made from Earth-based antennas  ... 
doi:10.1109/5.838084 fatcat:p6htog22o5hb5foaou5ax3pt4a

Glaciers and Ice Sheets Mapping Orbiter concept

Kenneth Jezek, Ernesto Rodríguez, Prasad Gogineni, Anthony Freeman, John Curlander, Xiaoqing Wu, John Paden, Chris Allen
2006 Journal of Geophysical Research  
will enable us to reduce signal contamination from surface clutter, measure the topography of the glacier bed at better than 1 km intervals with an accuracy of 20 m, and paint a picture of variations in  ...  We describe a concept for a spaceborne radar system designed to measure the surface and basal topography of terrestrial ice sheets and to determine the physical properties of the glacier bed.  ...  The later is one of the main reasons why airborne sounding radars are flown at low altitudes.  ... 
doi:10.1029/2005je002572 fatcat:5cz72msa5vebtebgikw3y22jfu

Active Optical Range Imaging Sensors [chapter]

Paul J. Besl
1989 Springer Series in Perception Engineering  
At least six different optical principles have been used to actively obtain range images: (1) radar, (2) triangulation, (3) moire, (4) holographic interferometry, (5) focusing, and (6) diffraction.  ...  They are unique imaging devices in that the image data points explicitly represent scene surface geometry in a sampled form.  ...  The illuminated bright spot is viewed via the opposite side of the mirror (and a symmetrically positioned fixed detector mirror).  ... 
doi:10.1007/978-1-4612-4532-2_1 fatcat:jacqk6hhwzf73nvhonxitx6d6q

Active, optical range imaging sensors

Paul J. Besl
1988 Machine Vision and Applications  
At least six different optical principles have been used to actively obtain range images: (1) radar, (2) triangulation, (3) moire, (4) holographic interferometry, (5) focusing, and (6) diffraction.  ...  They are unique imaging devices in that the image data points explicitly represent scene surface geometry in a sampled form.  ...  The illuminated bright spot is viewed via the opposite side of the mirror (and a symmetrically positioned fixed detector mirror).  ... 
doi:10.1007/bf01212277 fatcat:lmfx4oehf5be3eh7tgxxuu3lju

Dynamic Assessment of Masonry Towers Based on Terrestrial Radar Interferometer and Accelerometers

Cristina Castagnetti, Elisa Bassoli, Loris Vincenzi, Francesco Mancini
2019 Sensors  
High-speed radar interferometry is an innovative and powerful remote sensing technique for the dynamic monitoring of large structures since it is contactless, non-destructive, and able to measure fast  ...  Dynamic tests were conducted in operational conditions as well as during a bell concert.  ...  The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, and in the decision to publish the results.  ... 
doi:10.3390/s19061319 fatcat:6urvnpyytngp5kfhfikgthfegq

Capabilities of Dual-Frequency Millimeter Wave SAR With Monopulse Processing for Ground Moving Target Indication

Maurice Ruegg, Erich Meier, Daniel Nuesch
2007 IEEE Transactions on Geoscience and Remote Sensing  
Ground moving target indication (GMTI) for syn-thetic aperture radar (SAR) provides information on nonstatic objects in radar imagery of a static ground scene.  ...  elimination and target velocity ambiguity resolving by dual-frequency SAR.  ...  T 10 was moving in the opposite direction at 25.0 m/s and ∆ equal to 0.1 m/s. Ground-based radar and laser measured T 9 moving at 22.5 m/s and T 11 at 23.9 m/s.  ... 
doi:10.1109/tgrs.2006.888464 fatcat:p7v5ipeltza5jfnzchwc2ddddy
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