Laetitia Thirion-Lefevre

122

Documents

Presentation

Publications

	Identification of Maya ruins covered by jungle using Sentinel-1 Florent Michenot , Israel Hinostroza , Regis Guinvarc’h , Laetitia Thirion-Lefevre Scientific Reports, 2024, 14 (1), pp.3293. ⟨10.1038/s41598-024-53068-2⟩ Journal articles hal-04491093v1
	Grad-SLAM: Explaining Convolutional Autoencoders’ Latent Space of Satellite Image Time Series Thomas Di Martino , Régis Guinvarc’h , Laetitia Thirion-Lefevre , Élise Colin IEEE Geoscience and Remote Sensing Letters, 2023, 20, ⟨10.1109/LGRS.2023.3302906⟩ Journal articles hal-04215828v1
	Detection of Forest Fires through Deep Unsupervised Learning Modeling of Sentinel-1 Time Series Thomas Di Martino , Bertrand Le Saux , Régis Guinvarc’h , Laetitia Thirion-Lefevre , Elise Colin ISPRS International Journal of Geo-Information, 2023, 12 (8), pp.332. ⟨10.3390/ijgi12080332⟩ Journal articles hal-04215824v1
	A Numerically Efficient Method for Predicting the Scattering Characteristics of Complex Moving Targets Dihia Sidi Ahmed , Paola Russo , Graziano Cerri , Laetitia Thirion Lefevre , Regis Guinvarc'H IEEE Transactions on Antennas and Propagation, 2023, 71 (1), pp.910-920. ⟨10.1109/TAP.2022.3221645⟩ Journal articles hal-04463887v1
	FARMSAR: Fixing AgRicultural Mislabels Using Sentinel-1 Time Series and AutoencodeRs Thomas Di Martino , Régis Guinvarc’h , Laetitia Thirion-Lefevre , Elise Colin Remote Sensing, 2022, 15 (1), pp.35. ⟨10.3390/rs15010035⟩ Journal articles hal-03944485v1
	Measurements and Analysis of the Doppler Signature of a Human Moving within the Forest in UHF-Band Giovanni Manfredi , Israël Hinostroza , Michel Menelle , Stéphane Saillant , Jean-Philippe Ovarlez Remote Sensing, 2021, 13 (3), pp.423. ⟨10.3390/rs13030423⟩ Journal articles hal-03130174v1
	Beets or Cotton? Blind Extraction of Fine Agricultural Classes Using a Convolutional Autoencoder Applied to Temporal SAR Signatures Thomas Di Martino , Regis Guinvarc'H , Laetitia Thirion-Lefevre , Elise Colin Koeniguer IEEE Transactions on Geoscience and Remote Sensing, 2021, 60, pp.1-18. ⟨10.1109/TGRS.2021.3100637⟩ Journal articles hal-03534633v1
	The Combined Effect of Orientation Angle and Material on PolSAR Images of Urban Areas Laetitia Thirion-Lefèvre , Régis Guinvarc'H , Elise Colin-Koeniguer Remote Sensing, 2020, 12 (10), pp.1632. ⟨10.3390/rs12101632⟩ Journal articles hal-02903123v1
	Detecting Ephemeral Objects in SAR Time-Series Using Frozen Background-Based Change Detection Thibault Taillade , Laetitia Thirion-Lefevre , Régis Guinvarc'H Remote Sensing, 2020, 12 (11), pp.1720. ⟨10.3390/rs12111720⟩ Journal articles hal-03153901v1
	Polarimetric Phase and Implications for Urban Classification Donald Atwood , Laetitia Thirion-Lefevre IEEE Transactions on Geoscience and Remote Sensing, 2018, 56 (3), pp.1278 - 1289. ⟨10.1109/TGRS.2017.2750211⟩ Journal articles hal-01692803v1
	Analytical Solution for Permittivities of a Dihedral Configuration Orian Couderc , Laetitia Thirion-Lefèvre , Regis Guinvarcrh IEEE Antennas and Wireless Propagation Letters, 2018, 17 (3), pp.485-488. ⟨10.1109/LAWP.2018.2796842⟩ Journal articles hal-02124542v1
	The double Brewster angle effect Laetitia Thirion-Lefèvre , Régis Guinvarc'H Comptes Rendus. Physique, 2018, 19 (1-2), pp.43-53. ⟨10.1016/j.crhy.2018.02.003⟩ Journal articles hal-02124548v1
	Cross-Polarization Amplitudes of Obliquely Orientated Buildings With Application to Urban Areas R. Guinvarc'H , L. Thirion-Lefevre IEEE Geoscience and Remote Sensing Letters, 2017, 14 (11), pp.1913 - 1917. ⟨10.1109/LGRS.2017.2731122⟩ Journal articles hal-01692798v1
	A new technique to characterize foliage attenuation using passive radar in the L-band Marc Lesturgie , Laetitia Thirion-Lefevre , Stéphane Saillant , Philippe Dorey Comptes Rendus. Physique, 2016, Probing matter with electromagnetic waves/Sonder la matière par les ondes électromagnétiques URSI-France 2015 scientific days – Paris, CNAM, 24 & 25 March 2015, 17, pp.1003-1017. ⟨10.1016/j.crhy.2016.07.016⟩ Journal articles hal-01384294v1
	Optical Scale Polarimetric Device for Nanotube Forest Measurement: An Opportunity to Anticipate Bistatic Polarimetric SAR Images of Tree Trunk Forests at P-Band Etienne Everaere , Elise Colin Koeniguer , Laetitia Thirion-Lefevre , Jacqueline Tran , Costel Sorin Cojocaru IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2016, 9 (16), pp. 3249 - 3258. ⟨10.1109/JSTARS.2016.2532802⟩ Journal articles hal-01460076v1
	A New Light on SAR Backscattering Coefficient and Interferometric Coherence in Layover Areas A. Mokadem , E. Colin-Koeniguer , L. Thirion-Lefevre IEEE Geoscience and Remote Sensing Letters, 2015, 12 (12), pp.2428 - 2432. ⟨10.1109/LGRS.2015.2481708⟩ Journal articles hal-01265651v1
	Investigating the Use of Low Frequencies in Urban Areas: Application to NLOS Configurations Laetitia Thirion-Lefevre , Regis Guinvarch IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2015, 8 (7), pp 3720-3729. ⟨10.1109/JSTARS.2015.2441293⟩ Journal articles hal-01265646v1
	New SAR Target Imaging Algorithm based on Oblique Projection for Clutter Reduction Frédéric Brigui , Guillaume Ginolhac , Laetitia Thirion , Philippe Forster IEEE Transactions on Aerospace and Electronic Systems, 2014, 50 (2), pp.1118 - 1137. ⟨10.1109/TAES.2014.110287⟩ Journal articles hal-01059721v1
	New SAR Algorithm Based on Orthogonal Projections for MMT Detection and Interference Reduction Frédéric Brigui , Laetitia Thirion-Lefevre , Guillaume Ginolhac , Philippe Forster IEEE Transactions on Geoscience and Remote Sensing, 2014, PP (99), pp.1-12. ⟨10.1109/TGRS.2013.2276417⟩ Journal articles hal-00934257v1
	Back Projection Version of Subspace Detector SAR Processors Rémi Durand , Guillaume Ginolhac , Laetitia Thirion-Lefevre , Philippe Forster IEEE Transactions on Aerospace and Electronic Systems, 2011, 47 (2), pp.1489-1497. ⟨10.1109/TAES.2011.5751274⟩ Journal articles hal-00659486v1
	Modelling of the electromagnetic scattering by sea surfaces at grazing incidence. Application to HF surface wave radars Yaël Demarty , Laetitia Thirion-Lefèvre , Vincent Gobin Comptes Rendus. Physique, 2010, 11 (1), pp.87-95. ⟨10.1016/j.crhy.2010.01.003⟩ Journal articles hal-00556228v1
	Bistatic scattering from forest components. Part I: coherent polarimetric modelling and analysis of simulated results Laetitia Thirion-Lefèvre , Elise Colin-Koeniguer , Cyril Dahon Waves in Random and Complex Media, 2010, 20 (1), pp.36-61. ⟨10.1080/17455030903499680⟩ Journal articles hal-00556648v1
	Bistatic scattering from forest components. Part II: First validation of a bistatic polarimetric forest model at VHF UHF band [225-475 MHz] using indoor measurements Elise Colin-Koeniguer , Laetitia Thirion-Lefèvre Waves in Random and Complex Media, 2010, 20 (1), pp. 62-85. ⟨10.1080/17455030903334853⟩ Journal articles hal-00556645v1
	New Polarimetric Signal Subspace Detector for SAR processors Frédéric Brigui , Laetitia Thirion-Lefèvre , Guillaume Ginolhac , Philippe Forster Comptes Rendus. Physique, 2010, 11 (1), pp.104-113. ⟨10.1016/j.crhy.2010.01.004⟩ Journal articles hal-00556651v1
	New SAR processor based on a matched subspace detector Rémi Durand , Guillaume Ginolhac , Laetitia Thirion , Philippe Forster IEEE Transactions on Aerospace and Electronic Systems, 2009, 45 (1), pp. 221-236. ⟨10.1109/TAES.2009.4805275⟩ Journal articles hal-00443021v1
	Investigating about attenuation,scattering phase center and total height using simulated interferometric SAR images of forested areas Laetitia Thirion-Lefevre , Elise Colin-Koeniguer IEEE Transactions on Geoscience and Remote Sensing, 2007, 45 (10), pp.3172-3179. ⟨10.1109/TGRS.2007.904921⟩ Journal articles hal-00272112v1
	New SAR Processor based on Matched Subspace Detector R. Durand , Guillaume Ginolhac , L. Thirion , Philippe Forster IEEE Transactions on Aerospace and Electronic Systems, 2007 Journal articles halshs-00158257v1
	Capabilities of a forest scattering model applied to radiometry, interferometry, and polarimetric at P- and L- band Laetitia Thirion , Elise Colin , Cyril Dahon IEEE Transactions on Geoscience and Remote Sensing, 2006, 44 (4), pp.849-862. ⟨10.1109/TGRS.2005.862523⟩ Journal articles hal-00278350v1

	SIMPLIFIED SCHEME TO SEPARATELY RETRIEVE PERMITTIVITIES OF SURFACES OF A DIHEDRAL STRUCTURE USING RADAR POLARIMETRY Steve Tyler , Xavier Dupuis , Régis Guinvarc'h , Laetitia Thirion-Lefevre IEEE IGARSS, Jul 2023, PASADENA, United States. ⟨10.1109/IGARSS52108.2023.10282707⟩ Conference papers hal-04278991v1
	Numerical schemes to retrieve permittivities from rotated double bounce signatures in polarimetric SAR images Steve Tyler , Xavier Dupuis , Régis Guinvarc'h , Laetitia Thirion-Lefevre IEEE IGARSS 2023, Jul 2023, PASADENA, United States Conference papers hal-04285629v1
	Road Detection in a Forest Using Sentinel-1 and FBR Time-Series Speckle Filtering Florent Michenot , Israel Hinostroza , Regis Guinvarc’h , Laetitia Thirion-Lefevre IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium, Jul 2023, Pasadena, United States. pp.6561-6563, ⟨10.1109/IGARSS52108.2023.10281593⟩ Conference papers hal-04424461v2
	Towards the understanding of the C-Band temporal signature of boreal forest through physiology parameters retrieval from sentinel-1 time series and machine learning Thomas Di Martino , Régis Guinvarc'h , Laetitia Thirion-Lefevre , Elise Colin IEEE IGARSS 2023, Jul 2023, PASADENA, United States. ⟨10.1109/IGARSS52108.2023.10282866⟩ Conference papers hal-04314674v1
	Temporal Stack Speckle and Target Filtering for Environmental Applications Florent Michenot , Régis Guinvarc'H , Laetitia Thirion-Lefevre IGARSS 2022, Jul 2022, Kuala Lumpur, Malaysia. ⟨10.1109/IGARSS46834.2022.9884100⟩ Conference papers hal-03771853v1
	A FIRST TEST ON PERMITTIVTY INVERSION OF A DOUBLE BOUNCE IN A SAR IMAGE Steve Tyler , Xavier Dupuis , Laetitia Thirion-Lefevre , Régis Guinvarc'h IEEE IGARSS 2022, Jul 2022, KUALA LUMPUR, Malaysia. ⟨10.1109/IGARSS46834.2022.9884844⟩ Conference papers hal-03771449v1
	Modelling of agricultural SAR Time Series using Convolutional Autoencoder for the extraction of harvesting practices of rice fields Thomas Di Martino , Colin Koeniguer , Laetitia Thirion-Lefevre , Régis Guinvarc'h EUSAR 2022 :14th European Conference on Synthetic Aperture Radar, Jul 2022, Leipzig, Germany Conference papers hal-04108125v1
	Characterization and Extraction of Roads Using Polarimetry Methods in L-Band SAR Images Paillou Nathan , Laetitia Thirion-Lefevre , Regis Guinvarc'H IGARSS 2021 - 2021 IEEE International Geoscience and Remote Sensing Symposium, Jul 2021, Brussels, France. pp.327-330, ⟨10.1109/IGARSS47720.2021.9553904⟩ Conference papers hal-03616696v1
	Deep Temporal Convolutional Autoencoder for Unsupervised Representation Learning of Incoherent Polsar Time-Series Thomas Di Martino , Regis Guinvarc'H , Laetitia Thirion-Lefevre , Elise Koeniguer IGARSS 2021, Jul 2021, Bruxelles (virtual), Belgium Conference papers hal-03345533v1
	Use of Sentinel-1 Time-Series for Archaeological Structures Detection Florent Michenot , Giovanni Manfredi , Régis Guinvarc'H , Laetitia Thirion-Lefevre IGARSS 2021 - 2021 IEEE International Geoscience and Remote Sensing Symposium, Jul 2021, Brussels, Belgium. pp.5183-5186, ⟨10.1109/IGARSS47720.2021.9555144⟩ Conference papers hal-03616691v1
	Double bounce mechanism and deterministic targets in SAR remote sensing Laetitia Thirion-Lefevre , Régis Guinvarc'H , Elise Colin-Koeniguer EUSAR 2021, Mar 2021, VIRTUEL, Germany Conference papers hal-03244900v1
	Monostatic Radar Cross Section Simulation of Small Unmanned Aerial Vehicles in UHF band Dihia Sidi Ahmed , Laetitia Thirion-Lefèvre , Regis Guinvarch , Israël Hinostroza , Giovanni Manfredi 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, Jul 2020, Montréal, Canada Conference papers hal-03130200v1
	Characterization of the walking activity within the forest by using a Doppler analysis in the UHF-BAND Giovanni Manfredi , Israël Hinostroza , Michel Menelle , Stephane Saillant , Jean-Philippe Ovarlez 2020 IEEE International Geoscience and Remote Sensing Symposium (IGARSS2020), Sep 2020, Waikoloa, United States. ⟨10.1109/IGARSS39084.2020.9324453⟩ Conference papers hal-03130196v1
	Interest of Temporal Methods over Spatial Methods in Order to Detect Small Targets Paillou Nathan , Laetitia Thirion-Lefevre , Regis Guinvarc'H IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium, Sep 2020, Waikoloa, France. pp.1767-1769, ⟨10.1109/IGARSS39084.2020.9324539⟩ Conference papers hal-03616697v1
	Comparative Analysis of the Relative Polarimetric Radar Signature of Vegetation and Cities Districts L. Thirion-Lefevre , R. Guinvarc'H , Elise Colin-Koeniguer International Geoscience and Remote Sensing Symposium, Jul 2019, YOKOHAMA, Japan. pp.5221-5223, ⟨10.1109/IGARSS.2019.8899829⟩ Conference papers hal-02492698v1
	Benefit of Xpol for Urban Classification Using SAR Images R. Guinvarc'H , L. Thirion-Lefevre , D. Atwood IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, Jul 2019, Yokohama, Japan. pp.983-985, ⟨10.1109/IGARSS.2019.8898777⟩ Conference papers hal-02492671v1
	The essential contribution of HV to radar remote sensing Laetitia Thirion-Lefevre , Régis Guinvarc'H , Elise Colin Koeniguer ASC/CSA Advanced SAR workshop, 2019, Saint-Hubert, Canada Conference papers hal-02492699v1
	Features Extraction of the Doppler frequency signature of a human walking at 1 GHz Giovanni Manfredi , Jean-Philippe Ovarlez , Laetitia Thirion-Lefevre IGARSS 2019, Jul 2019, YOKOHAMA, Japan. ⟨10.1109/IGARSS.2019.8897817⟩ Conference papers hal-02364998v1
	The Double Brewster Angle Effect and the Radar Polarimetric Responses of Forests Laetitia Thirion-Lefevre , Régis Guinvarc'H ESA LPS, 2019, Milan, Italy Conference papers hal-02492678v1
	L-band Polarimetric Change Detection on Sar Images : Fire Burn Scars in California Thibault Taillade , Laetitia Thirion-Lefevre , Régis Guinvarc'H IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, Jul 2019, Yokohama, Japan. pp.9956-9959, ⟨10.1109/IGARSS.2019.8900081⟩ Conference papers hal-02492666v1
	Using a Single SAR Image at P Band for Deforestation Detection in Tropical Forest Régis Guinvarc'H , Laetitia Thirion-Lefevre ESA LPS, 2019, Milan, Italy Conference papers hal-02492680v1
	A new framework for polarimetric change detection in time series SAR images: the empty scene Thibault Taillade , Régis Guinvarc'H , Laetitia Thirion-Lefevre ASC/CSA Advanced SAR workshop, 2019, Saint-Hubert, Canada Conference papers hal-02492675v1
	Moisture Retrieval Using Monostatic Radar Double Bounce Orian Couderc , Laetitia Thirion-Lefèvre , Regis Guinvarch IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium, Jul 2018, Valencia, Spain. pp.9098-9101, ⟨10.1109/igarss.2018.8518702⟩ Conference papers hal-02124501v1
	Inversion of the Permittivities for a Double Bounce Mechanism Francois Doyelle , Orian Couderc , Laetitia Thirion-Lefevre , Régis Guinvarc'H PIERS 2017, Nov 2017, SINGAPOUR, Singapore Conference papers hal-01692825v1
	Frequency Variation of the polarimetric Scattering Mechanisms of Forests and its Consequences on Interferometric Height Laetitia Thirion-Lefevre , Régis Guinvarc'H Earth Observation Summit 2017, Jun 2017, Montreal, Canada Conference papers hal-01692830v1
	Impact of Rotation on the Polarimetric Signature of the Double Bounces and Alternatives Laetitia Thirion-Lefevre , Régis Guinvarc'H , D. Atwood PIERS 2017, Nov 2017, Singapour, Singapore Conference papers hal-01692813v1
	Is it possible to retrieve the complex permittivities using double bounce? Orian Couderc , Laetitia Thirion-Lefevre , Régis Guinvarc'H 2016 IEEE International Symposium on Antennas and Propagation (APSURSI 2016), Jun 2016, Puerto Rico, United States. ⟨10.1109/APS.2016.7696703⟩ Conference papers hal-01460031v1
	The signature of rotated double bounces in urban areas," in Synthetic Aperture Radar Régis Guinvarc'H , Laetitia Thirion-Lefevre 2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR 2015) , Sep 2015, Singapour, Singapore. pp 462-465, ⟨10.1109/APSAR.2015.7306249⟩ Conference papers hal-01265675v1
	Low frequency radar signatures of shadow areas in cities Laetitia Thirion-Lefevre , Régis Guinvarc'H 2015 Joint Urban Remote Sensing Event (JURSE 2015) , Mar 2015, Lausanne, Switzerland. pp 1-4, ⟨10.1109/JURSE.2015.7120522⟩ Conference papers hal-01265747v1
	The brewster effect on polarimetric information Laetitia Thirion-Lefèvre , Régis Guinvarc'H 2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Jul 2015, Milan, Italy. pp.227-230, ⟨10.1109/IGARSS.2015.7325741⟩ Conference papers hal-02414023v1
	The polarimetric signatures of double bounces in cities and forests. The double Brewster effect. Laetitia Thirion-Lefevre , Régis Guinvarc'H , Panagiotis Piteros , Marc Lambert The Advanced SAR workshop, Oct 2015, Quebec, Canada Conference papers hal-01265743v1
	Propagation in urban areas. Orientation, permittivity and entropy Régis Guinvarc'H , Laetitia Thirion-Lefevre 2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2015), Jul 2015, Milan, Italy. pp.1594-1597 ⟨10.1109/IGARSS.2015.7326088⟩ Conference papers hal-01265767v1
	Propagation mechanisms in urban canyons. Distorsions and entropy Laetitia Thirion-Lefevre , Régis Guinvarc'H , Elise Colin Koeniguer , Azza Mokadem 10th European Conference on Synthetic Aperture Radar (EUSAR 2014), VDE, Jun 2014, Berlin, Germany. pp.1-4 Conference papers hal-01103890v1
	Cognitive radar applied to forest and kriging-based metamodel Panagiotis Piteros , Laetitia Thirion-Lefevre , Régis Guinvarc'H , Marc Lambert 2014 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2014), Jul 2014, Quebec, Canada. 4 p Conference papers hal-01103273v1
	Understanding and validation of the polarimetric scattering of a forest for bistatic P-band SAR measurements Etienne Everaere , Elise Colin Koeniguer , Laetitia Thirion-Lefevre , Antonello de Martino 2014 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2014), Jul 2014, Quebec, Canada. pp.4556-4559, ⟨10.1109/IGARSS.2014.6947506⟩ Conference papers hal-01104068v1
	Cognitive kriging metamodels for forest characterization and target detection Panagiotis Piteros , Laetitia Thirion-Lefevre , Régis Guinvarc'H , Marc Lambert 2014 International Radar Conference , Oct 2014, Lille, France. 5 p., ⟨10.1109/RADAR.2014.7060325⟩ Conference papers hal-01103268v1
	Evaluation of the attenuation in L-band due to the foliage in function of the elevation angle Stéphane Saillant , Philippe Dorey , Marc Lesturgie , Laetitia Thirion-Lefevre 2014 International Radar Conference , Oct 2014, Lille, France. pp 1-4, ⟨10.1109/RADAR.2014.7060309⟩ Conference papers hal-01278360v1
	Analysis of a NLOS canyon in an InSAR image of a urban area at Ka-band Azza Mokadem , Laetitia Thirion-Lefèvre , Elise Colin-Koeniguer 3rd SONDRA Workshop, Jun 2013, Hyères - La Londe les Maures, France Conference papers hal-00935398v1
	On the interpretation of anechoic chamber data using FEKO Azza Mokadem , Laetitia Thirion-Lefèvre , Régis Guinvarc'H , Elise Colin-Koeniguer 3rd SONDRA Workshop, Jun 2013, Hyères - La Londe les Maures, France Conference papers hal-00935421v1
	COSMO: a tool to simulate the fields backscattered by forests in polarimetric and in interferometric configurations Laetitia Thirion-Lefèvre , Min Min Chan , Heong Wann Seah 3rd SONDRA Workshop, Jun 2013, Hyères - La Londe les Maures, France Conference papers hal-00935420v1
	Polarimetric scattering model for the forest in bistatic configuration Etienne Everaere , Elise Colin-Koeniguer , Laetitia Thirion-Lefevre 3rd SONDRA Workshop, Jun 2013, Hyères - La Londe les Maures, France Conference papers hal-00935394v1
	Analysis of a NLOS canyon in an InSAR image of a urban area at Ka-band Azza Mokadem , Laetitia Thirion-Lefevre , Elise Colin-Koeniguer 2013 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2013), Jul 2013, Melbourne, Australia. ⟨10.1109/IGARSS.2013.6723776⟩ Conference papers hal-00935120v1
	Analysing urban areas in the frame of non line of sight target detection. Electromagnetic modelling, validation and application to real data in Ka-band Azza Mokadem , Laetitia Thirion-Lefevre , Elise Colin Koeniguer , Régis Guinvarc'H 2013 International Conference on Electromagnetics in Advanced Applications (ICEAA 2013), Sep 2013, Turin, Italy. pp.543 - 546, ⟨10.1109/ICEAA.2013.6632297⟩ Conference papers hal-00934302v1
	The polarimetric information in urban areas. The specific case of urban canyons Azza Mokadem , Laetitia Thirion-Lefèvre , Régis Guinvarc'H , Elise Colin-Koeniguer ASAR 2013, Oct 2013, Longueil, Canada Conference papers hal-00935450v1
	Cognitive radar for forest characterization Panagiotis Piteros , Laetitia Thirion-Lefèvre , Régis Guinvarc'H , Marc Lambert 3rd SONDRA Workshop, Jun 2013, Hyères - La Londe les Maures, France Conference papers hal-00935427v1
	Influence of bistatic angle and forest structure description on classical polarimetric parameters Etienne Everaere , Elise Colin-Koeniguer , Laetitia Thirion-Lefèvre , Antonello de Martino 2012 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2012), Jul 2012, Munich, Germany. pp.6531-6534, ⟨10.1109/IGARSS.2012.6352754⟩ Conference papers hal-00782400v1
	Determination of mechanisms that can occur in NLOS urban canyon Azza Mokadem , Laetitia Thirion-Lefèvre , Elise Colin-Koeniguer , Florence Tupin 2012 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2012), Jul 2012, Münich, Germany. pp.6633-6636, ⟨10.1109/IGARSS.2012.6352078⟩ Conference papers hal-00782404v1
	Determination o fmechanisms that can occur in NLOS urban canyon Azza Mokadem , Laetitia Thirion-Lefèvre , Elise Colin-Koeniguer , Florence Tupin 9th European Conference on Synthetic Aperture Radar (EUSAR 2012), Apr 2012, Nuremberg, Germany. pp.99-102 Conference papers hal-00782377v1
	Analyse des performances d'algorithmes d'imagerie SAR basés sur des modèles à sous-espace Frédéric Brigui , Guillaume Ginolhac , Laetitia Thirion-Lefèvre , Philippe Forster GRETSI 2011, Sep 2011, Bordeaux, France Conference papers hal-00659602v1
	Metamodel-based adaptive use of a coherent polarimetric backscattering simulator for the characterization of forested areas at low frequencies Andras Vasko , Laetitia Thirion-Lefèvre , Sandór Bilicz , Isabelle Champion , Marc Lambert PIERS 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 Conference papers hal-02749058v2
	Combination of an adaptive metamodel and a coherent polarimetric backscattering simulator for the characterization of forested areas at low frequencies Andras Vasko , Laetitia Thirion , Sandor Bilicz , Isabelle Champion , Marc Lambert Assemblée générale biannuelle du GDR Ondes - Interférences d'Ondes, Oct 2011, Nice, France Conference papers hal-00658029v1
	Preliminary studies on the detection of a NLOS target in a 2D urban canyion using polinsar data Elise Colin-Koeniguer , Nicolas Sar , Laetitia Thirion-Lefèvre , Azza Mokadem 5th International Workshop on Science and Applications of SAR Polarimetry and Polarimetric Interferometry (PolInsar 2011), Jan 2011, Frascati, Italy. 6 p Conference papers hal-00659488v1
	Contribution of the polarimetric information in order to discriminate target from interference subspaces. Application to FoPen detection with SAR processing Frédéric Brigui , Laetitia Thirion-Lefevre , Guillaume Ginolhac , Philippe Forster 2011 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2011), Jul 2011, Vancouver, Canada. ⟨10.1109/IGARSS.2011.6048917⟩ Conference papers hal-00659491v1
	Oblique polarimetric SAR processor based on signal and interference subspace models Frédéric Brigui , Laetitia Thirion-Lefèvre , Guillaume Ginolhac , Philippe Forster 2010 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2010), Jul 2010, Honolulu, United States. 4 p. CDROM, ⟨10.1109/IGARSS.2010.5649493⟩ Conference papers hal-00556987v1
	Performances of subspace SAR processors for target detection and interference rejection Frédéric Brigui , Guillaume Ginolhac , Laetitia Thirion-Lefèvre , Philippe Forster 2nd SONDRA Workshop , May 2010, Cargèse, France Conference papers hal-00556988v1
	On the use of an optimal database for radar forest observation Laetitia Thirion-Lefèvre , Sandór Bilicz , Marc Lambert , Szabolcs Gyimothy 8th European Conference on Synthetic Aperture Radar (EUSAR 2010), Jun 2010, Aachen, Germany. pp.873 - 876 Conference papers hal-00489988v1
	Orthogonal polarimetric SAR processor based on signal and interference subspace models Frédéric Brigui , Laetitia Thirion-Lefèvre , Guillaume Ginolhac , Philippe Forster 2010 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2010), Jul 2010, Honolulu, United States. 4 p. (CD ROM), ⟨10.1109/IGARSS.2010.5652436⟩ Conference papers hal-00556975v1
	Modélisation de la diffusion électromagnétique par des surfaces de mer en incidence rasante. Application aux radars HF à ondes de surface. Yaël Demarty , Laetitia Thirion-Lefevre Journées scientifiques d'URSI-FRANCE. Propagation et Télédétection, Mar 2009, Paris, France Conference papers hal-00443026v1
	Processeurs SAR basés sur des détecteurs à sous-espaces Frédéric Brigui , Laetitia Thirion-Lefevre , Guillaume Ginolhac , Philippe Forster Journées scientifiques d'URSI-FRANCE. Propagation et Télédétection, Mar 2009, Paris, France Conference papers hal-00443027v1
	New Polarimetric signal and interference subspace detectors for SAR processors Frédéric Brigui , Guillaume Ginolhac , Laetitia Thirion-Lefevre , Philippe Forster 2009 International Radar Conference "Surveillance for a Safer World" (RADAR 2009) , Apr 2009, Bordeaux, France. 4 p Conference papers hal-00443025v1
	Apport de la modélisation EM à l'observation radar des forêts Laetitia Thirion-Lefevre Assemblée Générale du GDR Ondes, Nov 2009, Paris, France. 2 p Conference papers hal-00447646v1
	Processeurs SAR basés sur des détecteurs à sous-espaces Frédéric Brigui , Laetitia Thirion-Lefevre , Guillaume Ginolhac , Philippe Forster Assemblée Générale du GDR Ondes, Nov 2009, Paris, France. 2 p Conference papers hal-00449735v1
	New Polarimetric signal subspace detectors for SAR processors Frédéric Brigui , Laetitia Thirion-Lefevre , Guillaume Ginolhac , Philippe Forster 2009 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2009), Apr 2009, Taipei, Taiwan. pp.2189-2192, ⟨10.1109/ICASSP.2009.4960052⟩ Conference papers hal-00443022v1
	First polarimetric validation and results on the bistatic scattering by a set of cylinders using a forest scattering model Laetitia Thirion-Lefèvre , Elise Colin-Koeniguer 7th European Conference on Synthetic Aperture Radar, Jun 2008, Friedrichshafen, Germany Conference papers hal-00354649v1
	Bistatic scattering by forested areas at low frequencies: simulation and indoor measurements Laetitia Thirion-Lefèvre , Elise Colin-Koeniguer XXIX General Assembly of the International Union of Radio Science (URSI 2008), Aug 2008, Chicago, United States Conference papers hal-00354633v1
	Exploitation of Angular Diversity for Bistatic Image Formation using Opportunistic Transmitters Chin Yuan Chong , Laetitia Thirion-Lefèvre 7th European Conference on Synthetic Aperture Radar, Jun 2008, Friedrichshafen, Germany Conference papers hal-00354642v1
	Simulated HF Doppler Spectra obtained with an exact modeling of the EM backscattering by 3D time evolving sea surfaces Yaël Demarty , Laetitia Thirion-Lefèvre , Marc Lesturgie 2008 International Conference on Radar , Sep 2008, Adelaide, Australia. ⟨10.1109/RADAR.2008.4653932⟩ Conference papers hal-00354568v1
	SAR processor based on a CFAR signal on interference subspace detector matched to man-made target detection in a forest Rémy Durand , Guillaume Ginolhac , Philippe Forster , Laetitia Thirion-Lefevre 2007 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2007), Apr 2007, Honolulu, United States. ⟨10.1109/ICASSP.2007.366230⟩ Conference papers hal-00272370v1
	Modélisation intégrale de la diffusion électromagnétique par des surfaces de mer dans le cas des radars basses fréquences à ondes de surfaces Yaël Demarty , Laetitia Thirion-Lefevre GDR Ondes - Réunion générale Interférences d'Ondes, Nov 2007, Pessac, France Conference papers hal-00272455v1
	Modelling of the bistatic scattering by a group of cylinders Laetitia Thirion-Lefevre , Cyril Dahon 3rd International Workshop on Science and Applications of SAR Polarimetry and Polarimetric Interferometry (PolInsar 2007), Jan 2007, Frascati, Italy. 6 p. CD-ROM Proceedings Conference papers hal-00272374v1
	Exact modelling of the scattering of realistic sea surfaces for HFSWR applications Yaël Demarty , Vincent Gobin , Laetitia Thirion-Lefevre , Régis Guinvarc'H , Marc Lesturgie 2007 IEEE International Geoscience and Remote Sensing Symposium, Jul 2007, Barcelone, Spain. ⟨10.1109/IGARSS.2007.4422970⟩ Conference papers hal-00272356v1
	Modeling radar scattering by forested areas Laetitia Thirion-Lefevre Workshop SONDRA, Apr 2007, Aussois, France Conference papers hal-00272464v1
	Bistatic image formation using ISAR methods Chin Yuan Chong , Laetitia Thirion-Lefevre Workshop SONDRA, Apr 2007, Aussois, France Conference papers hal-00272467v1
	Détection de cibles cachées sous couvert forestier au moyen d'un processeur SAR basé sur un détecteur de sous-espaces Rémy Durand , Laetitia Thirion-Lefevre , Guillaume Ginolhac , Philippe Forster GDR Ondes, Nov 2007, Pessac, France Conference papers hal-00272489v1
	SAR Processor based on a CFAR Signal or Interference Subspace Detector Matched to Man Made Target Detection in a Forest R. Durand , L. Thirion , Guillaume Ginolhac , Philippe Forster 2007, Hawaï, United States Conference papers halshs-00158343v1
	Implementation and optimisation of a SAR processor based on a subspace detector. Application to man made target detection in a forest. Rémi Durand , Guillaume Ginolhac , Philippe Forster , Laetitia Thirion International SAR and SAS Conference, Sep 2006, Lerici, Italy. 12 p. sur C-ROM Conference papers hal-00278601v1
	Implemetation and optimization of a SAR processor based on a subspace detector. Application to Man Made Target detection in a forest. R. Durand , L. Thirion , Guillaume Ginolhac , Philippe Forster 2006, Lerici, Italy Conference papers halshs-00158347v1
	Detection of a target hidden in a forest: Performance of a SAR Processor based on a subspace detector Rémi Durand , Guillaume Ginolhac , Philippe Forster , Laetitia Thirion European Conference on Synthetic Aperture Radar (EUSAR 2006), May 2006, Dresde, Germany. 4 p. sur CD-ROM Conference papers hal-00278631v1
	Man Made Target Detection in a Forest with a Subspace SAR Processor R. Durand , L. Thirion , Guillaume Ginolhac , Philippe Forster 2006, Denver, Colorado, United States Conference papers halshs-00158358v1
	Relation between attenuation coefficient and interferometric heights behavior from P-band to L-band Laetitia Thirion , Elise Colin 2006 IEEE International Symposium on Geoscience and Remote Sensing (IGARSS 2006), Jul 2006, Denver, United States. ⟨10.1109/IGARSS.2006.568⟩ Conference papers hal-00272114v1
	Modelling of bistatic scattering of forested area at P-band Laetitia Thirion , Cécile Titin-Schnaider , Cyril Dahon , Elise Colin 6th European Conference on Synthetic Aperture Radar, May 2006, Dresde, Germany Conference papers hal-00272115v1
	Man made target detection in a forest with a subspace detector Rémi Durand , Laetitia Thirion , Guillaume Ginolhac , Philippe Forster 2006 IEEE International Symposium on Geoscience and Remote Sensing (IGARSS 2006), Jul 2006, Denver, United States. ⟨10.1109/IGARSS.2006.43⟩ Conference papers hal-00278611v1
	Detection of a target hidden in a forest: Performance of a SAR Processor based on a Subspace Detector.. R. Durand , Guillaume Ginolhac , Philippe Forster , L. Thirion 2006, Dresde, Germany Conference papers halshs-00158354v1
	New SAR Processor Based on a Subspace Detector Rémi Durand , Laetitia Thirion , Guillaume Ginolhac , Philippe Forster 14th European Signal Processing Conference (EUSIPCO 2006), Sep 2006, Florence, Italy. 5 p. sur www.eurasip.org Conference papers hal-00278607v1
	New SAR Processor based on a subspace detector.. R. Durand , Guillaume Ginolhac , Philippe Forster , L. Thirion 2006, Florence, Italy Conference papers halshs-00158351v1
	Algorithme de Synthèse d'Ouverture Basé sur un Détecteur à Sous Espace.. R. Durand , Guillaume Ginolhac , Philippe Forster , L. Thirion , M. Lesturgie 2005, Louvain, Belgique Conference papers halshs-00158364v1
	Comparison between simulations and interferometric polarimetric SAR P-band data on a pine-trees forest Elise Colin , Laetitia Thirion-Lefevre , Cécile Titin-Schnaider , Walid Tabbara 2004 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2004), Sep 2004, Anchorage, United States. pp 3128-3131, ⟨10.1109/IGARSS.2004.1370362⟩ Conference papers hal-01269690v1
	Modelling of the Scatterring by a Smooth Dieletric Cylinder : Study of the Complex Scattering Matrix using two Different Models L. Thirion , I. Chênerie , Cyril Dahon , Laurent Ferro-Famil , A. Lefevre POLINSAR 2003, Jan 2003, Frascati, Italy Conference papers hal-00919047v1

	Temporal Stack Speckle and Target Filtering for Environmental Applications Florent Michenot , Régis Guinvarc'H , Laetitia Thirion-Lefevre IGARSS 2022, Jul 2022, Kuala Lumpur, Malaysia. ⟨10.13140/RG.2.2.27304.44804⟩ Conference poster hal-03771847v1
	Detection of archaeological sites hidden by a forest canopy using Sentinel-1 time-series Florent Michenot , Régis Guinvarc'H , Laetitia Thirion-Lefevre Living Planet Symposium, May 2022, Bonn, Germany. ⟨10.13140/RG.2.2.22288.48642⟩ Conference poster hal-03771833v1
	Evaluation of the attenuation in L-band due to the foliage in function of the elevation angle Stéphane Saillant , Philippe Dorey , Laetitia Thirion-Lefevre , Marc Lesturgie 2014 International Radar Conference , Oct 2014, Lille, France Conference poster hal-01104772v1
	Combination of an adaptive metamodel and a coherent polarimetric backscattering simulator for the characterization of forested areas at low frequencies Andras Vasko , Laetitia Thirion-Lefèvre , Sandór Bilicz , Isabelle Champion , Marc Lambert Interférence d'ondes, Oct 2011, Nice, France. n.p., 2011 Conference poster hal-02806342v1

	Modéliser la rétrodiffusion radar par les forêts : une première étape pour inverser Elise Colin , Laetitia Thirion-Lefevre Inversion et assimilation de données de télédétection, ISTE Group, pp.237-269, 2023, ⟨10.51926/ISTE.9142.ch7⟩ Book sections hal-04463878v1

	Modélisation de l'interaction cohérente des ondes électromagnétiques avec des couverts forestiers Laetitia Thirion Autre. Université Paul Sabatier - Toulouse III, 2003. Français. ⟨NNT : ⟩ Theses tel-00004022v1

Laetitia Thirion-Lefevre

Presentation

Publications

Identification of Maya ruins covered by jungle using Sentinel-1

Grad-SLAM: Explaining Convolutional Autoencoders’ Latent Space of Satellite Image Time Series

Detection of Forest Fires through Deep Unsupervised Learning Modeling of Sentinel-1 Time Series

A Numerically Efficient Method for Predicting the Scattering Characteristics of Complex Moving Targets

FARMSAR: Fixing AgRicultural Mislabels Using Sentinel-1 Time Series and AutoencodeRs

Measurements and Analysis of the Doppler Signature of a Human Moving within the Forest in UHF-Band

Beets or Cotton? Blind Extraction of Fine Agricultural Classes Using a Convolutional Autoencoder Applied to Temporal SAR Signatures

The Combined Effect of Orientation Angle and Material on PolSAR Images of Urban Areas

Detecting Ephemeral Objects in SAR Time-Series Using Frozen Background-Based Change Detection

Polarimetric Phase and Implications for Urban Classification

Analytical Solution for Permittivities of a Dihedral Configuration

The double Brewster angle effect

Cross-Polarization Amplitudes of Obliquely Orientated Buildings With Application to Urban Areas

A new technique to characterize foliage attenuation using passive radar in the L-band

Optical Scale Polarimetric Device for Nanotube Forest Measurement: An Opportunity to Anticipate Bistatic Polarimetric SAR Images of Tree Trunk Forests at P-Band

A New Light on SAR Backscattering Coefficient and Interferometric Coherence in Layover Areas

Investigating the Use of Low Frequencies in Urban Areas: Application to NLOS Configurations

New SAR Target Imaging Algorithm based on Oblique Projection for Clutter Reduction

New SAR Algorithm Based on Orthogonal Projections for MMT Detection and Interference Reduction

Back Projection Version of Subspace Detector SAR Processors

Modelling of the electromagnetic scattering by sea surfaces at grazing incidence. Application to HF surface wave radars

Bistatic scattering from forest components. Part I: coherent polarimetric modelling and analysis of simulated results

Bistatic scattering from forest components. Part II: First validation of a bistatic polarimetric forest model at VHF UHF band [225-475 MHz] using indoor measurements

New Polarimetric Signal Subspace Detector for SAR processors

New SAR processor based on a matched subspace detector

Investigating about attenuation,scattering phase center and total height using simulated interferometric SAR images of forested areas

New SAR Processor based on Matched Subspace Detector

Capabilities of a forest scattering model applied to radiometry, interferometry, and polarimetric at P- and L- band

SIMPLIFIED SCHEME TO SEPARATELY RETRIEVE PERMITTIVITIES OF SURFACES OF A DIHEDRAL STRUCTURE USING RADAR POLARIMETRY

Numerical schemes to retrieve permittivities from rotated double bounce signatures in polarimetric SAR images

Road Detection in a Forest Using Sentinel-1 and FBR Time-Series Speckle Filtering

Towards the understanding of the C-Band temporal signature of boreal forest through physiology parameters retrieval from sentinel-1 time series and machine learning

Temporal Stack Speckle and Target Filtering for Environmental Applications

A FIRST TEST ON PERMITTIVTY INVERSION OF A DOUBLE BOUNCE IN A SAR IMAGE

Modelling of agricultural SAR Time Series using Convolutional Autoencoder for the extraction of harvesting practices of rice fields

Characterization and Extraction of Roads Using Polarimetry Methods in L-Band SAR Images

Deep Temporal Convolutional Autoencoder for Unsupervised Representation Learning of Incoherent Polsar Time-Series

Use of Sentinel-1 Time-Series for Archaeological Structures Detection

Double bounce mechanism and deterministic targets in SAR remote sensing

Monostatic Radar Cross Section Simulation of Small Unmanned Aerial Vehicles in UHF band

Characterization of the walking activity within the forest by using a Doppler analysis in the UHF-BAND

Interest of Temporal Methods over Spatial Methods in Order to Detect Small Targets

Comparative Analysis of the Relative Polarimetric Radar Signature of Vegetation and Cities Districts

Benefit of Xpol for Urban Classification Using SAR Images

The essential contribution of HV to radar remote sensing

Features Extraction of the Doppler frequency signature of a human walking at 1 GHz

The Double Brewster Angle Effect and the Radar Polarimetric Responses of Forests

L-band Polarimetric Change Detection on Sar Images : Fire Burn Scars in California

Using a Single SAR Image at P Band for Deforestation Detection in Tropical Forest

A new framework for polarimetric change detection in time series SAR images: the empty scene

Moisture Retrieval Using Monostatic Radar Double Bounce

Inversion of the Permittivities for a Double Bounce Mechanism

Frequency Variation of the polarimetric Scattering Mechanisms of Forests and its Consequences on Interferometric Height

Impact of Rotation on the Polarimetric Signature of the Double Bounces and Alternatives

Is it possible to retrieve the complex permittivities using double bounce?

The signature of rotated double bounces in urban areas," in Synthetic Aperture Radar

Low frequency radar signatures of shadow areas in cities

The brewster effect on polarimetric information

The polarimetric signatures of double bounces in cities and forests. The double Brewster effect.

Propagation in urban areas. Orientation, permittivity and entropy

Propagation mechanisms in urban canyons. Distorsions and entropy

Cognitive radar applied to forest and kriging-based metamodel

Understanding and validation of the polarimetric scattering of a forest for bistatic P-band SAR measurements

Cognitive kriging metamodels for forest characterization and target detection

Evaluation of the attenuation in L-band due to the foliage in function of the elevation angle

Analysis of a NLOS canyon in an InSAR image of a urban area at Ka-band

On the interpretation of anechoic chamber data using FEKO

COSMO: a tool to simulate the fields backscattered by forests in polarimetric and in interferometric configurations

Polarimetric scattering model for the forest in bistatic configuration

Analysis of a NLOS canyon in an InSAR image of a urban area at Ka-band

Analysing urban areas in the frame of non line of sight target detection. Electromagnetic modelling, validation and application to real data in Ka-band

The polarimetric information in urban areas. The specific case of urban canyons

Cognitive radar for forest characterization

Influence of bistatic angle and forest structure description on classical polarimetric parameters

Determination of mechanisms that can occur in NLOS urban canyon

Determination o fmechanisms that can occur in NLOS urban canyon

Analyse des performances d'algorithmes d'imagerie SAR basés sur des modèles à sous-espace