Zobrazeno 1 - 10
of 77
pro vyhledávání: '"ludovic Villard"'
Publikováno v:
Frontiers in Remote Sensing, Vol 5 (2024)
Canopy height is a key indicator of tropical forest structure. In this study, we present a deep learning application to map canopy height in French Guiana using freely available multi-source satellite data (optical and radar) and complementary enviro
Externí odkaz:
https://doaj.org/article/d6d4ee48fb35477897214967df567433
Autor:
Adnane Chakir, Pierre-Louis Frison, Ludovic Villard, Nadia Ouaadi, Pascal Fanise, Khabba Said, Valerie Le Dantec, Rafi Zoubair, Jamal Ezzahar, Benedicte Fruneau, Jean-Paul Rudant, Jarlan Lionel
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 3635-3647 (2024)
This article aimed to monitor vegetation using C-band radar data at a subdaily time step. To this end, radar measurements using tower-mounted antennas with a 15-min time step, along with physiology-related information (sapflow and micrometric dendrom
Externí odkaz:
https://doaj.org/article/9e7bd6e991a440f588b072e8ecdbb336
Autor:
Mhamad El Hage, Ludovic Villard, Yue Huang, Laurent Ferro-Famil, Thierry Koleck, Thuy Le Toan, Laurent Polidori
Publikováno v:
Remote Sensing, Vol 14, Iss 17, p 4173 (2022)
The penetration capability of P-band radar waves through dense vegetation, along with the ability of tomography to separate the contributions of different layers in a vertical reflectivity profile, make P-band radar tomography a promising tool for di
Externí odkaz:
https://doaj.org/article/300ff7c82f954be5972b67265a34acc9
Autor:
David Morin, Milena Planells, Nicolas Baghdadi, Alexandre Bouvet, Ibrahim Fayad, Thuy Le Toan, Stéphane Mermoz, Ludovic Villard
Publikováno v:
Remote Sensing, Vol 14, Iss 9, p 2079 (2022)
Forests are one of the key elements in ecological transition policies in Europe. Sustainable forest management is needed in order to optimise wood harvesting, while preserving carbon storage, biodiversity and other ecological functions. Forest manage
Externí odkaz:
https://doaj.org/article/c6ab32796d80463484598e691383cd7d
Autor:
Colette Gelas, Ludovic Villard, Laurent Ferro-Famil, Laurent Polidori, Thierry Koleck, Sandrine Daniel
Publikováno v:
Remote Sensing, Vol 13, Iss 1, p 142 (2021)
The purpose of this paper is twofold, considering first the generalization of a multichannel speckle filter in order to handle temporal stacks of polarimetric SLC SAR data, and secondly the development of an ad hoc performance indicator based on the
Externí odkaz:
https://doaj.org/article/6d0df29fdcad42cfb9d0df2b18237a13
Publikováno v:
Remote Sensing, Vol 12, Iss 18, p 3016 (2020)
Spaceborne remote sensing can track ecosystems changes thanks to continuous and systematic coverage at short revisit intervals. Active remote sensing from synthetic aperture radar (SAR) sensors allows day and night imaging as they are not affected by
Externí odkaz:
https://doaj.org/article/b3e189333f4c42e9a1720657698dbaa6
Autor:
Francesco Banda, Davide Giudici, Thuy Le Toan, Mauro Mariotti d’Alessandro, Kostas Papathanassiou, Shaun Quegan, Guido Riembauer, Klaus Scipal, Maciej Soja, Stefano Tebaldini, Lars Ulander, Ludovic Villard
Publikováno v:
Remote Sensing, Vol 12, Iss 6, p 985 (2020)
BIOMASS is ESA’s seventh Earth Explorer mission, scheduled for launch in 2022. The satellite will be the first P-band SAR sensor in space and will be operated in fully polarimetric interferometric and tomographic modes. The mission aim is to map fo
Externí odkaz:
https://doaj.org/article/8b97186a342d4526877f8eaeeda16a05
Autor:
David Morin, Milena Planells, Dominique Guyon, Ludovic Villard, Stéphane Mermoz, Alexandre Bouvet, Hervé Thevenon, Jean-François Dejoux, Thuy Le Toan, Gérard Dedieu
Publikováno v:
Remote Sensing, Vol 11, Iss 11, p 1275 (2019)
Temperate forests are under climatic and economic pressures. Public bodies, NGOs and the wood industry are looking for accurate, current and affordable data driven solutions to intensify wood production while maintaining or improving long term sustai
Externí odkaz:
https://doaj.org/article/dee34cc62d214b7db83483ca019c6364
Autor:
Pierre-Louis Frison, Bénédicte Fruneau, Syrine Kmiha, Kamel Soudani, Eric Dufrêne, Thuy Le Toan, Thierry Koleck, Ludovic Villard, Eric Mougin, Jean-Paul Rudant
Publikováno v:
Remote Sensing, Vol 10, Iss 12, p 2049 (2018)
In this study, the potential of Sentinel-1 data to seasonally monitor temperate forests was investigated by analyzing radar signatures observed from plots in the Fontainebleau Forest of the Ile de France region, France, for the period extending from
Externí odkaz:
https://doaj.org/article/d88d0f66f71043a8bac6d66cdc238b66
Autor:
Adnane Chakir, Pierre-louis Frison, Said Khabba, ludovic Villard, Valerie Le-dantec, Nadia Ouaadi, Pascal Fanise, Lionel Jarlan
In recent decades, climate change has led to a sharp increase in water demand. Particularly in agriculture, this has put a great strain on already scarce water resources, increased the need for irrigation water, and led to overuse of groundwater. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0414f979c7e37dd449d1f13ac863a2ce
https://doi.org/10.5194/egusphere-egu23-16445
https://doi.org/10.5194/egusphere-egu23-16445
