Laetitia Thirion-Lefevre

Laboratoire

SONDRA

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Publications (128)

Article dans une revue 14/02/2026

Rainforest Monitoring Using Deep Learning and Short Time Series of Sentinel-1 IW Data

Ricardo Dal Molin , Regis Guinvarc’h , Paola Rizzoli , Laetitia Thirion-Lefevre

Poster de conférence 23/06/2025

Detection of Spruce Budworm with Sentinel-1 Time Series

Laetitia Thirion , Xavier Dupuis , Thierry Koleck , Laetitia Thirion-Lefevre

Communication dans un congrès 01/01/2025

Complex Plane Representation of Double Bounce Scattering Characteristics for Permittivity Classification

Xavier Dupuis , Laetitia Thirion-Lefevre

Communication dans un congrès 21/10/2024

SAR time series for under canopy detection

Régis Guinvarc , Laetitia Thirion , Laetitia Thirion-Lefevre

Article dans une revue 08/02/2024

Identification of Maya ruins covered by jungle using Sentinel-1

Regis Guinvarc’h , Laetitia Thirion-Lefevre

Article dans une revue 01/01/2024

Retrieving Complex Permittivities From Remote Dual Co-Pol Radar Measurements

Orian Couderc , Israel Sáenz , Laetitia Thirion , Regis Guinvarc’h , Laetitia Thirion-Lefevre

Communication dans un congrès 20/10/2023

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

Laetitia Thirion-Lefevre

Article dans une revue 01/08/2023

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

Bertrand Le Saux , Regis Guinvarc’h , Elise Colin , Laetitia Thirion-Lefevre

Poster de conférence 16/07/2023

ANALYSIS OF THE TEMPORAL VARIATION OF THE BACKSCATTERING COEFFICIENTS OVER A BOREAL FOREST AND THEIR LINK WITH GROUND TRUTH DATA - THE CASE OF LES GRANDS JARDINS, QUEBEC

Andre Beaudoin , Laetitia Thirion , Laetitia Thirion-Lefevre

Chapitre d'ouvrage 01/02/2023

Modéliser la rétrodiffusion radar par les forêts : une première étape pour inverser

Elise Colin , Laetitia Thirion-Lefevre

Article dans une revue 01/01/2023

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

Dihia Sidi Ahmed , Paola Russo , Graziano Cerri , Laetitia Thirion Lefevre , Giovanni Manfredi , Laetitia Thirion-Lefevre

Communication dans un congrès 01/01/2023

Simplified scheme to separately retrieve permittivities of surfaces of a dihedral structure using radar polarimetry

Xavier Dupuis , Laetitia Thirion-Lefevre

Communication dans un congrès 01/01/2023

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

Elise Colin , Laetitia Thirion-Lefevre

Article dans une revue 01/01/2023

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

Regis Guinvarc’h , Elise Colin , Laetitia Thirion-Lefevre

Communication dans un congrès 01/01/2023

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

Xavier Dupuis , Laetitia Thirion-Lefevre

Article dans une revue 21/12/2022

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

Regis Guinvarc’h , Elise Colin , Laetitia Thirion-Lefevre

Communication dans un congrès 17/07/2022

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

Xavier Dupuis , Laetitia Thirion-Lefevre

Communication dans un congrès 01/07/2022

Temporal Stack Speckle and Target Filtering for Environmental Applications

Laetitia Thirion-Lefevre

Poster de conférence 01/07/2022

Temporal Stack Speckle and Target Filtering for Environmental Applications

Laetitia Thirion-Lefevre

Poster de conférence 01/05/2022

Detection of archaeological sites hidden by a forest canopy using Sentinel-1 time-series

Laetitia Thirion-Lefevre

Communication dans un congrès 01/01/2022

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

Colin Koeniguer , Laetitia Thirion-Lefevre

Article dans une revue 06/08/2021

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

Elise Colin Koeniguer , Laetitia Thirion-Lefevre

Communication dans un congrès 12/07/2021

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

Elise Koeniguer , Laetitia Thirion-Lefevre

Communication dans un congrès 11/07/2021

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

Giovanni Manfredi , Laetitia Thirion-Lefevre

Communication dans un congrès 11/07/2021

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

Paillou Nathan , Laetitia Thirion-Lefevre

Communication dans un congrès 29/03/2021

Double bounce mechanism and deterministic targets in SAR remote sensing

Elise Colin-Koeniguer , Laetitia Thirion-Lefevre

Communication dans un congrès 17/02/2021

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

Dihia Sidi Ahmed , Regis Guinvarch , Giovanni Manfredi , Paola Russo , Graziano Cerri , Laetitia Thirion-Lefevre

Article dans une revue 26/01/2021

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

Giovanni Manfredi , Michel Menelle , Jean-Philippe Ovarlez , Laetitia Thirion-Lefevre

Communication dans un congrès 26/09/2020

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

Paillou Nathan , Laetitia Thirion-Lefevre

Communication dans un congrès 26/09/2020

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

Giovanni Manfredi , Michel Menelle , Jean-Philippe Ovarlez , Laetitia Thirion-Lefevre