Laetitia Thirion-Lefevre
Présentation
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Publications
Publications
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SAR time series for under canopy detectionRadarConf24 - 2024 IEEE Radar Conference, SEE, Oct 2024, Rennes, France |
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Numerical schemes to retrieve permittivities from rotated double bounce signatures in polarimetric SAR imagesIEEE IGARSS 2023, Jul 2023, Pasadena, United States |
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Simplified scheme to separately retrieve permittivities of surfaces of a dihedral structure using radar polarimetryIEEE IGARSS, Jul 2023, Pasadena, United States. ⟨10.1109/IGARSS52108.2023.10282707⟩ |
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Road Detection in a Forest Using Sentinel-1 and FBR Time-Series Speckle FilteringIGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium, Jul 2023, Pasadena, United States. pp.6561-6563, ⟨10.1109/IGARSS52108.2023.10281593⟩ |
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Towards the understanding of the C-Band temporal signature of boreal forest through physiology parameters retrieval from sentinel-1 time series and machine learningIEEE IGARSS 2023, Jul 2023, Pasadena, United States. ⟨10.1109/IGARSS52108.2023.10282866⟩ |
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Temporal Stack Speckle and Target Filtering for Environmental ApplicationsIGARSS 2022, Jul 2022, Kuala Lumpur, Malaysia. ⟨10.1109/IGARSS46834.2022.9884100⟩ |
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Modelling of agricultural SAR Time Series using Convolutional Autoencoder for the extraction of harvesting practices of rice fieldsEUSAR 2022 :14th European Conference on Synthetic Aperture Radar, Jul 2022, Leipzig, Germany |
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A FIRST TEST ON PERMITTIVTY INVERSION OF A DOUBLE BOUNCE IN A SAR IMAGEIEEE IGARSS 2022, Jul 2022, Kuala Lumpur, Malaysia. ⟨10.1109/IGARSS46834.2022.9884844⟩ |
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Use of Sentinel-1 Time-Series for Archaeological Structures DetectionIGARSS 2021 - 2021 IEEE International Geoscience and Remote Sensing Symposium, Jul 2021, Bruxelles, Belgium. pp.5183-5186, ⟨10.1109/IGARSS47720.2021.9555144⟩ |
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Deep Temporal Convolutional Autoencoder for Unsupervised Representation Learning of Incoherent Polsar Time-SeriesIGARSS 2021, Jul 2021, Bruxelles, Belgium |
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Double bounce mechanism and deterministic targets in SAR remote sensingEUSAR 2021, Mar 2021, Online, Germany |
Monostatic Radar Cross Section Simulation of Small Unmanned Aerial Vehicles in UHF band2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, Jul 2020, Montréal, Canada |
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Characterization and Extraction of Roads Using Polarimetry Methods in L-Band SAR ImagesIGARSS 2021 - 2021 IEEE International Geoscience and Remote Sensing Symposium, Jul 2021, Bruxelles, Belgium. pp.327-330, ⟨10.1109/IGARSS47720.2021.9553904⟩ |
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Characterization of the walking activity within the forest by using a Doppler analysis in the UHF-BAND2020 IEEE International Geoscience and Remote Sensing Symposium (IGARSS2020), Sep 2020, Waikoloa, United States. ⟨10.1109/IGARSS39084.2020.9324453⟩ |
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Interest of Temporal Methods over Spatial Methods in Order to Detect Small TargetsIGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium, Sep 2020, Waikoloa, United States. pp.1767-1769, ⟨10.1109/IGARSS39084.2020.9324539⟩ |
The Double Brewster Angle Effect and the Radar Polarimetric Responses of ForestsESA LPS, 2019, Milan, Italy |
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L-band Polarimetric Change Detection on Sar Images : Fire Burn Scars in CaliforniaIGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, Jul 2019, Yokohama, Japan. pp.9956-9959, ⟨10.1109/IGARSS.2019.8900081⟩ |
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Features Extraction of the Doppler frequency signature of a human walking at 1 GHzIGARSS 2019, Jul 2019, Yokohama, Japan. ⟨10.1109/IGARSS.2019.8897817⟩ |
A new framework for polarimetric change detection in time series SAR images: the empty sceneASC/CSA Advanced SAR workshop, 2019, Saint-Hubert, Canada |
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The essential contribution of HV to radar remote sensingASC/CSA Advanced SAR workshop, 2019, Saint-Hubert, Canada |
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Benefit of Xpol for Urban Classification Using SAR ImagesIGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, Jul 2019, Yokohama, Japan. pp.983-985, ⟨10.1109/IGARSS.2019.8898777⟩ |
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Comparative Analysis of the Relative Polarimetric Radar Signature of Vegetation and Cities DistrictsInternational Geoscience and Remote Sensing Symposium, Jul 2019, Yokohama, Japan. pp.5221-5223, ⟨10.1109/IGARSS.2019.8899829⟩ |
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Using a Single SAR Image at P Band for Deforestation Detection in Tropical ForestESA LPS, 2019, Milan, Italy |
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Moisture Retrieval Using Monostatic Radar Double BounceIGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium, Jul 2018, Valencia, Spain. pp.9098-9101, ⟨10.1109/igarss.2018.8518702⟩ |
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Inversion of the Permittivities for a Double Bounce MechanismPIERS 2017, Nov 2017, Singapour, Singapore |
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Impact of Rotation on the Polarimetric Signature of the Double Bounces and AlternativesPIERS 2017, Nov 2017, Singapour, Singapore |
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Frequency Variation of the polarimetric Scattering Mechanisms of Forests and its Consequences on Interferometric HeightEarth Observation Summit 2017, Jun 2017, Montréal, Canada |
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Is it possible to retrieve the complex permittivities using double bounce?2016 IEEE International Symposium on Antennas and Propagation (APSURSI 2016), Jun 2016, Puerto Rico, United States. ⟨10.1109/APS.2016.7696703⟩ |
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The brewster effect on polarimetric information2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Jul 2015, Milan, Italy. pp.227-230, ⟨10.1109/IGARSS.2015.7325741⟩ |
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The signature of rotated double bounces in urban areas," in Synthetic Aperture Radar2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR 2015) , Sep 2015, Singapour, Singapore. pp 462-465, ⟨10.1109/APSAR.2015.7306249⟩ |
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Low frequency radar signatures of shadow areas in cities2015 Joint Urban Remote Sensing Event (JURSE 2015) , Mar 2015, Lausanne, Switzerland. pp 1-4, ⟨10.1109/JURSE.2015.7120522⟩ |
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Propagation in urban areas. Orientation, permittivity and entropy2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2015), Jul 2015, Milan, Italy. pp.1594-1597 ⟨10.1109/IGARSS.2015.7326088⟩ |
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The polarimetric signatures of double bounces in cities and forests. The double Brewster effect.The Advanced SAR workshop, Oct 2015, Québec, Canada |
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Evaluation of the attenuation in L-band due to the foliage in function of the elevation angle2014 International Radar Conference , Oct 2014, Lille, France. pp 1-4, ⟨10.1109/RADAR.2014.7060309⟩ |
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Cognitive kriging metamodels for forest characterization and target detection2014 International Radar Conference , Oct 2014, Lille, France. 5 p., ⟨10.1109/RADAR.2014.7060325⟩ |
Understanding and validation of the polarimetric scattering of a forest for bistatic P-band SAR measurements2014 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2014), Jul 2014, Québec, Canada. pp.4556-4559, ⟨10.1109/IGARSS.2014.6947506⟩ |
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Propagation mechanisms in urban canyons. Distorsions and entropy10th European Conference on Synthetic Aperture Radar (EUSAR 2014), VDE, Jun 2014, Berlin, Germany. pp.1-4 |
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Cognitive radar applied to forest and kriging-based metamodel2014 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2014), Jul 2014, Québec, Canada. 4 p |
On the interpretation of anechoic chamber data using FEKO3rd SONDRA Workshop, Jun 2013, Hyères - La Londe les Maures, France |
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Cognitive radar for forest characterization3rd SONDRA Workshop, Jun 2013, Hyères - La Londe les Maures, France |
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The polarimetric information in urban areas. The specific case of urban canyonsASAR 2013, Oct 2013, Longueil, Canada |
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COSMO: a tool to simulate the fields backscattered by forests in polarimetric and in interferometric configurations3rd SONDRA Workshop, Jun 2013, Hyères - La Londe les Maures, France |
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Analysis of a NLOS canyon in an InSAR image of a urban area at Ka-band3rd SONDRA Workshop, Jun 2013, Hyères - La Londe les Maures, France |
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Analysing urban areas in the frame of non line of sight target detection. Electromagnetic modelling, validation and application to real data in Ka-band2013 International Conference on Electromagnetics in Advanced Applications (ICEAA 2013), Sep 2013, Turin, Italy. pp.543 - 546, ⟨10.1109/ICEAA.2013.6632297⟩ |
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Analysis of a NLOS canyon in an InSAR image of a urban area at Ka-band2013 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2013), Jul 2013, Melbourne, Australia. ⟨10.1109/IGARSS.2013.6723776⟩ |
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Polarimetric scattering model for the forest in bistatic configuration3rd SONDRA Workshop, Jun 2013, Hyères - La Londe les Maures, France |
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Determination of mechanisms that can occur in NLOS urban canyon2012 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2012), Jul 2012, Munich, Germany. pp.6633-6636, ⟨10.1109/IGARSS.2012.6352078⟩ |
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Determination o fmechanisms that can occur in NLOS urban canyon9th European Conference on Synthetic Aperture Radar (EUSAR 2012), Apr 2012, Nuremberg, Germany. pp.99-102 |
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Influence of bistatic angle and forest structure description on classical polarimetric parameters2012 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2012), Jul 2012, Munich, Germany. pp.6531-6534, ⟨10.1109/IGARSS.2012.6352754⟩ |
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Combination of an adaptive metamodel and a coherent polarimetric backscattering simulator for the characterization of forested areas at low frequenciesAssemblée générale biannuelle du GDR Ondes - Interférences d'Ondes, Oct 2011, Nice, France |
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Metamodel-based adaptive use of a coherent polarimetric backscattering simulator for the characterization of forested areas at low frequenciesPIERS 2011 - Progress In Electromagnetics Research Symposium, Electromagnetics Academy. Saisissez le nom du laboratoire, du service ou du département., Cambridge, MA, USA., Sep 2011, Suzhou, China. n.p |
Analyse des performances d'algorithmes d'imagerie SAR basés sur des modèles à sous-espaceGRETSI 2011, Sep 2011, Bordeaux, France |
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Preliminary studies on the detection of a NLOS target in a 2D urban canyion using polinsar data5th International Workshop on Science and Applications of SAR Polarimetry and Polarimetric Interferometry (PolInsar 2011), Jan 2011, Frascati, Italy. 6 p |
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Contribution of the polarimetric information in order to discriminate target from interference subspaces. Application to FoPen detection with SAR processing2011 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2011), Jul 2011, Vancouver, Canada. ⟨10.1109/IGARSS.2011.6048917⟩ |
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Orthogonal polarimetric SAR processor based on signal and interference subspace models2010 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2010), Jul 2010, Honolulu, United States. 4 p. (CD ROM), ⟨10.1109/IGARSS.2010.5652436⟩ |
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Oblique polarimetric SAR processor based on signal and interference subspace models2010 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2010), Jul 2010, Honolulu, United States. 4 p. CDROM, ⟨10.1109/IGARSS.2010.5649493⟩ |
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On the use of an optimal database for radar forest observation8th European Conference on Synthetic Aperture Radar (EUSAR 2010), Jun 2010, Aix-la-Chapelle, Germany. pp.873 - 876 |
Performances of subspace SAR processors for target detection and interference rejection2nd SONDRA Workshop , May 2010, Cargèse, France |
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Modélisation de la diffusion électromagnétique par des surfaces de mer en incidence rasante. Application aux radars HF à ondes de surface.Journées scientifiques d'URSI-FRANCE. Propagation et Télédétection, Mar 2009, Paris, France |
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Processeurs SAR basés sur des détecteurs à sous-espacesJournées scientifiques d'URSI-FRANCE. Propagation et Télédétection, Mar 2009, Paris, France |
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New Polarimetric signal subspace detectors for SAR processors2009 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2009), Apr 2009, Taipei, Taiwan. pp.2189-2192, ⟨10.1109/ICASSP.2009.4960052⟩ |
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Processeurs SAR basés sur des détecteurs à sous-espacesAssemblée Générale du GDR Ondes, Nov 2009, Paris, France. 2 p |
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Apport de la modélisation EM à l'observation radar des forêtsAssemblée Générale du GDR Ondes, Nov 2009, Paris, France. 2 p |
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New Polarimetric signal and interference subspace detectors for SAR processors2009 International Radar Conference "Surveillance for a Safer World" (RADAR 2009) , Apr 2009, Bordeaux, France. 4 p |
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Simulated HF Doppler Spectra obtained with an exact modeling of the EM backscattering by 3D time evolving sea surfaces2008 International Conference on Radar , Sep 2008, Adelaïde, Australia. ⟨10.1109/RADAR.2008.4653932⟩ |
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Exploitation of Angular Diversity for Bistatic Image Formation using Opportunistic Transmitters7th European Conference on Synthetic Aperture Radar, Jun 2008, Friedrichshafen, Germany |
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Bistatic scattering by forested areas at low frequencies: simulation and indoor measurementsXXIX General Assembly of the International Union of Radio Science (URSI 2008), Aug 2008, Chicago, United States |
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First polarimetric validation and results on the bistatic scattering by a set of cylinders using a forest scattering model7th European Conference on Synthetic Aperture Radar, Jun 2008, Friedrichshafen, Germany |
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Modeling radar scattering by forested areasWorkshop SONDRA, Apr 2007, Aussois, France |
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Bistatic image formation using ISAR methodsWorkshop SONDRA, Apr 2007, Aussois, France |
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Exact modelling of the scattering of realistic sea surfaces for HFSWR applications2007 IEEE International Geoscience and Remote Sensing Symposium, Jul 2007, Barcelone, Spain. ⟨10.1109/IGARSS.2007.4422970⟩ |
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SAR processor based on a CFAR signal on interference subspace detector matched to man-made target detection in a forest2007 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2007), Apr 2007, Honolulu, United States. ⟨10.1109/ICASSP.2007.366230⟩ |
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Modélisation intégrale de la diffusion électromagnétique par des surfaces de mer dans le cas des radars basses fréquences à ondes de surfacesGDR Ondes - Réunion générale Interférences d'Ondes, Nov 2007, Pessac, France |
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Modelling of the bistatic scattering by a group of cylinders3rd International Workshop on Science and Applications of SAR Polarimetry and Polarimetric Interferometry (PolInsar 2007), Jan 2007, Frascati, Italy. 6 p. CD-ROM Proceedings |
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Détection de cibles cachées sous couvert forestier au moyen d'un processeur SAR basé sur un détecteur de sous-espacesGDR Ondes, Nov 2007, Pessac, France |
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SAR Processor based on a CFAR Signal or Interference Subspace Detector Matched to Man Made Target Detection in a Forest2007, Hawaï, United States |
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Man made target detection in a forest with a subspace detector2006 IEEE International Symposium on Geoscience and Remote Sensing (IGARSS 2006), Jul 2006, Denver, United States. ⟨10.1109/IGARSS.2006.43⟩ |
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Relation between attenuation coefficient and interferometric heights behavior from P-band to L-band2006 IEEE International Symposium on Geoscience and Remote Sensing (IGARSS 2006), Jul 2006, Denver, United States. ⟨10.1109/IGARSS.2006.568⟩ |
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Modelling of bistatic scattering of forested area at P-band6th European Conference on Synthetic Aperture Radar, May 2006, Dresde, Germany |
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Detection of a target hidden in a forest: Performance of a SAR Processor based on a Subspace Detector..2006, Dresde, Germany |
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New SAR Processor based on a subspace detector..2006, Florence, Italy |
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Implementation and optimisation of a SAR processor based on a subspace detector. Application to man made target detection in a forest.International SAR and SAS Conference, Sep 2006, Lerici, Italy. 12 p. sur C-ROM |
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Implemetation and optimization of a SAR processor based on a subspace detector. Application to Man Made Target detection in a forest.2006, Lerici, Italy |
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Man Made Target Detection in a Forest with a Subspace SAR Processor2006, Denver, Colorado, United States |
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Detection of a target hidden in a forest: Performance of a SAR Processor based on a subspace detectorEuropean Conference on Synthetic Aperture Radar (EUSAR 2006), May 2006, Dresde, Germany. 4 p. sur CD-ROM |
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New SAR Processor Based on a Subspace Detector14th European Signal Processing Conference (EUSIPCO 2006), Sep 2006, Florence, Italy. 5 p. sur www.eurasip.org |
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Algorithme de Synthèse d'Ouverture Basé sur un Détecteur à Sous Espace..2005, Louvain, Belgique |
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Comparison between simulations and interferometric polarimetric SAR P-band data on a pine-trees forest2004 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2004), Sep 2004, Anchorage, United States. pp 3128-3131, ⟨10.1109/IGARSS.2004.1370362⟩ |
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Modelling of the Scatterring by a Smooth Dieletric Cylinder : Study of the Complex Scattering Matrix using two Different ModelsPOLINSAR 2003, Jan 2003, Frascati, Italy |
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Detection of Spruce Budworm with Sentinel-1 Time SeriesLiving Planet Symposium 2025, Jun 2025, Vienna, Austria |
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Temporal Stack Speckle and Target Filtering for Environmental ApplicationsIGARSS 2022, Jul 2022, Kuala Lumpur, Malaysia. ⟨10.13140/RG.2.2.27304.44804⟩ |
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Detection of archaeological sites hidden by a forest canopy using Sentinel-1 time-seriesLiving Planet Symposium, May 2022, Bonn, Germany. ⟨10.13140/RG.2.2.22288.48642⟩ |
Evaluation of the attenuation in L-band due to the foliage in function of the elevation angle2014 International Radar Conference , Oct 2014, Lille, France |
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Combination of an adaptive metamodel and a coherent polarimetric backscattering simulator for the characterization of forested areas at low frequenciesInterférence d'ondes, Oct 2011, Nice, France. n.p., 2011 |
Modéliser la rétrodiffusion radar par les forêts : une première étape pour inverserInversion et assimilation de données de télédétection, ISTE Group, pp.237-269, 2023, ⟨10.51926/ISTE.9142.ch7⟩ |
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Modélisation de l'interaction cohérente des ondes électromagnétiques avec des couverts forestiersAutre. Université Paul Sabatier - Toulouse III, 2003. Français. ⟨NNT : ⟩ |