Search Results - "Oriot, Helene"

A Cooperative SAR-Communication System Using Continuous Phase Modulation Codes and Mismatched Filters by Chatzitheodoridi, Maria-Elisavet, Taylor, Abigael, Rabaste, Olivier, Oriot, Helene

“…The electromagnetic congestion due to the continuous growth of spectral demand has been skyrocketing for the past years. Joint radar-communication systems are,…”
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Urban surface reconstruction in SAR tomography by graph-cuts by Rambour, Clément, Denis, Loïc, Tupin, Florence, Oriot, Hélène, Huang, Yue, Ferro-Famil, Laurent

“…SAR (Synthetic Aperture Radar) tomography reconstructs 3-D volumes from stacks of SAR images. High resolution satellites such as TerraSAR-X provide images that…”
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KaRIn on SWOT: Characteristics of Near-Nadir Ka-Band Interferometric SAR Imagery by Fjortoft, Roger, Gaudin, Jean-Marc, Pourthie, Nadine, Lalaurie, Jean-Claude, Mallet, Alain, Nouvel, Jean-Francois, Martinot-Lagarde, Joseph, Oriot, Helene, Borderies, Pierre, Ruiz, Christian, Daniel, Sandrine

“…The principal instrument of the NASA/CNES wide-swath altimetry mission Surface Water and Ocean Topography (SWOT) is the Ka-band Radar Interferometer (KaRIn), a…”
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The TropiSAR Airborne Campaign in French Guiana: Objectives, Description, and Observed Temporal Behavior of the Backscatter Signal by Dubois-Fernandez, P. C., Thuy Le Toan, Daniel, S., Oriot, H., Chave, J., Blanc, L., Villard, L., Davidson, M. W. J., Petit, M.

“…The TropiSAR campaign has been conducted in August 2009 in French Guiana with the ONERA airborne radar system SETHI. The main objective of this campaign was to…”
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Experiments on an ISAR-Communication System Using Continuous Phase Modulation and Mismatched Filtering by Chatzitheodoridi, Maria-Elisavet, Taylor, Abigael, Yousfi, Fayin, Goncalves, Nicolas, Rozel, Milan, Rabaste, Olivier, Oriot, Helene

“…Due to the congestion of the electromagnetic spectrum, the need for spectral allocation has been tremendous in recent times. Should they have the ability to…”
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Introducing Spatial Regularization in SAR Tomography Reconstruction by Rambour, Clement, Denis, Loic, Tupin, Florence, Oriot, Helene M.

“…The resolution achieved by current synthetic aperture radar (SAR) sensors provides a detailed visualization of urban areas. Spaceborne sensors such as…”
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Ground Moving Target Trajectory Reconstruction in Single-Channel Circular SAR by Poisson, Jean-Baptiste, Oriot, Hélène M., Tupin, Florence

“…Synthetic aperture radar (SAR) has become an important technique for generating high-resolution images of the ground because of its all-weather capabilities…”
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Moving Targets Detection Capacities Improvement in Multichannel SAR Framework by Taylor, Abigael, Oriot, Helene M., Savy, Laurent, Daout, Franck, Forster, Philippe

“…When using multichannel synthetic aperture radar (MSAR) to perform moving target detection, the coherence between the received signals is closely linked to the…”
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Radargrammetric DEM Extraction Over Urban Area Using Circular SAR Imagery by Palm, S., Oriot, H. M., Cantalloube, H. M.

“…Digital elevation model (DEM) extraction in urban areas, using synthetic aperture radar (SAR) imagery, has become a subject of interest with the increased…”
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A Sidelobe Level Minimization Mismatched Filter using Continuous Phase Frequency-Shift Keying Codes for the Off-Grid Delay Problem by Chatzitheodoridi, Maria-Elisavet, Taylor, Abigael, Rabaste, Olivier, Oriot, Helene

“…Sidelobe suppression is an essential criterion for radar performance, especially for off-grid points of sampled signals. In this paper, a mismatched filter…”
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Search and recovery of aircraft parts in ice-sheet crevasse fields using airborne and in situ geophysical sensors by Mankoff, Kenneth D., van As, Dirk, Lines, Austin, Bording, Thue, Elliott, Joshua, Kraghede, Rune, Cantalloube, Hubert, Oriot, Hélène, Dubois-Fernandez, Pascale, Ruault du Plessis, Olivier, Christiansen, Anders Vest, Auken, Esben, Hansen, Karina, Colgan, William, Karlsson, Nanna B.

“…On 30 September 2017, an Air France Airbus A380-800 suffered a failure of its fourth engine while over Greenland. This failure resulted in the loss of the…”
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ONERA SAR facilities by du Plessis, Olivier Ruault, Nouvel, Jean-François, Baqué, Rémi, Bonin, Grégory, Dreuillet, Philippe, Coulombeix, Colette, Oriot, Hélène

“…This paper provides an overview of the airborne SAR systems developed by the French Aerospace Lab ONERA over the past five years. The first system, called…”
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Urban surface recovery through graph-cuts over SAR tomographic reconstruction by Rambour, Clement, Denis, Loic, Tupin, Florence, Oriot, Helene

“…The understanding of tomograms can be a difficult task when the observed scene is complex. The Synthetic Aperture RADAR (SAR) ranging acquisition induces…”
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SAR Tomography of Urban Areas: 3D Regularized Inversion in the Scene Geometry by Rambour, Clement, Denis, Loic, Tupin, Florence, Nicolas, Jean-Marie, Oriot, Helene

“…Starting from a stack of co-registered SAR images in interferometric configuration, SAR tomography performs a reconstruction of the reflectivity of scatterers…”
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Sethi : Review Of 10 Years Of Development And Experimentation Of The Remote Sensing Platform by Baque, Remi, Dreuillet, Philippe, Oriot, Helene

“…ONERA is one of the leading organizations in experimental research on aeronautic topics. Works on Airborne Radar began forty years ago with the first airborne…”
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Similarity criterion for SAR tomography over dense urban area by Rambour, Clement, Denis, Loic, Tupin, Florence, Nicolas, Jean-Marie, Oriot, Helene, Ferro-Famil, Laurent, Deledalle, Charles

“…Starting from a stack of co-registered SAR images in interferometric configuration, SAR tomography performs a reconstruction of the reflectivity of scatterers…”
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Moving targets detection and location estimation on airborne SAR images by Taylor, Abigael, Oriot, Helene, Savy, Laurent, Daout, Franck, Forster, Philippe

“…Detecting and locating moving targets are key issues for radar ground surveillance. Because of its attractive resolution, the use of SAR imaging for this…”
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Ultra-High Resolution and Long Range X-Band Airborne SAR System by Baque, Remi, Ruault du Plessis, Olivier, Castet, Nicolas, Fromage, Patrick, Martinot-Lagarde, Joseph, Nouvel, Jean-Francois, Oriot, Helene, Cantalloube, Hubert, Chanteclerc, Martine, Martineau, Philippe

“…Since a few years ONERA has been investing in high performance radar demonstrators. It has been contracted by the French MoD to develop a X-Band high peak…”
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A Generalization of the Fixed Point Estimate for Packet-Scaled Complex Covariance Matrix Estimation by Taylor, Abigael, Forster, Philippe, Daout, Franck, Oriot, Helene M., Savy, Laurent

“…In this paper, the problem of estimating complex-valued proportional covariance matrices is addressed. The obtained estimate generalizes the fixed point…”
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Automated Signal Analysis for Chirp Reinjections and SAR Images by Martinot-Lagarde, Joseph, Oriot, Helene, Cantalloube, Hubert

“…The airborne radar team at ONERA developed tools to help check the data quality of its ever evolving radars, two of which are being presented here. The first…”
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