L
Ludovic Villard
Researcher at University of Toulouse
Publications - 63
Citations - 1552
Ludovic Villard is an academic researcher from University of Toulouse. The author has contributed to research in topics: Synthetic aperture radar & Radar. The author has an hindex of 17, co-authored 60 publications receiving 1165 citations. Previous affiliations of Ludovic Villard include Paul Sabatier University & Centre national de la recherche scientifique.
Papers
More filters
Journal ArticleDOI
Relating P-Band Synthetic Aperture Radar Tomography to Tropical Forest Biomass
Dinh Ho Tong Minh,Thuy Le Toan,Fabio Rocca,Stefano Tebaldini,Mauro Mariotti d'Alessandro,Ludovic Villard +5 more
TL;DR: This study presents an attempt to overcome the issues outlined above based on direct 3-D imaging of the forest volume, which is possible through multibaseline SAR tomography, and the relevance of tomographic technique in P-band spaceborne mission is discussed.
Journal ArticleDOI
The European Space Agency BIOMASS mission: Measuring forest above-ground biomass from space
Shaun Quegan,Thuy Le Toan,Jérôme Chave,Jørgen Dall,Jean-François Exbrayat,Dinh Ho Tong Minh,Mark R. Lomas,Mauro Mariotti d'Alessandro,Philippe Paillou,Kostas Papathanassiou,Fabio Rocca,Sassan Saatchi,Sassan Saatchi,Klaus Scipal,Hank Shugart,T. Luke Smallman,Maciej J. Soja,Maciej J. Soja,Stefano Tebaldini,Lars M. H. Ulander,Ludovic Villard,Mathew Williams +21 more
TL;DR: The European Space Agency's 7th Earth Explorer mission, BIOMASS, is to determine the worldwide distribution of forest above-ground biomass (AGB) in order to reduce the major uncertainties in calculations of carbon stocks and fluxes associated with the terrestrial biosphere, including carbon fluxe associated with Land Use Change, forest degradation and forest regrowth as mentioned in this paper.
Journal ArticleDOI
An above-ground biomass map of African savannahs and woodlands at 25 m resolution derived from ALOS PALSAR
Alexandre Bouvet,Stéphane Mermoz,Thuy Le Toan,Ludovic Villard,Renaud Mathieu,Laven Naidoo,Gregory P. Asner +6 more
TL;DR: In this paper, a map of the above-ground woody biomass (AGB) of African savannahs and woodlands at a resolution of 25 m is presented, based on the 2010 L-band PALSAR mosaic produced by JAXA.
Journal ArticleDOI
SAR tomography for the retrieval of forest biomass and height: cross-validation at two tropical forest sites in French Guiana
Dinh Ho Tong Minh,Dinh Ho Tong Minh,Thuy Le Toan,Fabio Rocca,Stefano Tebaldini,Ludovic Villard,Maxime Réjou-Méchain,Maxime Réjou-Méchain,Oliver L. Phillips,Ted R. Feldpausch,Pascale Dubois-Fernandez,Klaus Scipal,Jérôme Chave +12 more
TL;DR: In this article, a method to retrieve the top-of-canopy height from TomoSAR data was proposed, with an error of only 10% at 1.5-ha resolution.
Journal ArticleDOI
The TropiSAR Airborne Campaign in French Guiana: Objectives, Description, and Observed Temporal Behavior of the Backscatter Signal
P. Dubois-Fernandez,Thuy Le Toan,Sandrine Daniel,Helene Oriot,Jérôme Chave,Lilian Blanc,Ludovic Villard,Malcolm Davidson,Michel Petit +8 more
TL;DR: The TropiSAR campaign has been conducted in August 2009 in French Guiana with the ONERA airborne radar system SETHI and a tropical forest data set was required in order to provide test data for the evaluation of the foreseen inversion algorithms and data products.