Filters








27 Hits in 3.7 sec

RESTORATION TECHNIQUE FOR PLEIADES-HR PANCHROMATIC IMAGES

C. Latry, S. Fourest, C. Thiebaut
2012 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
Special attention will be given to structured noise induced by Pleiades-HR on board wavelet-based compression algorithm  ...  Each of these methods includes numerous parameters that have to be assessed during the inflight commissioning period: deconvolution filter that depends on MTF assessment, instrumental noise model, noise  ...  ACKNOWLEDGEMENTS The author would like to thank the whole team of image experts who have performed a great job, spending time, energy and enthusiasm during the 6 month of the image quality commissioning  ... 
doi:10.5194/isprsarchives-xxxix-b1-555-2012 fatcat:ckvdoz5ky5eaxlwtfv56toh53m

PLEIADES SYSTEM ARCHITECTURE AND MAIN PERFORMANCES

M. A. Gleyzes, L. Perret, P. Kubik
2012 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
This paper reports the status of the satellite after its launch and the in orbit commissioning, the PLEIADES satellite first model has been launched at the end of year 2011, the second model will be launched  ...  PLEIADES delivers optical high resolution products consisting in a Panchromatic image, into which is merged a four multispectral bands image, orthorectified on a Digital Terrain Model (DTM).  ...  ACKNOWLEDGEMENTS The author would like to thank all the partners, European and French institutional for having trusted CNES to develop this Pleiades program.  ... 
doi:10.5194/isprsarchives-xxxix-b1-537-2012 fatcat:xp2fmbynfzh3np3nl3hlbnfgsu

VOLUMETRIC FOREST CHANGE DETECTION THROUGH VHR SATELLITE IMAGERY

Devrim Akca, Efstratios Stylianidis, Konstantinos Smagas, Martin Hofer, Daniela Poli, Armin Gruen, Victor Sanchez Martin, Orhan Altan, Andreas Walli, Elisa Jimeno, Alejandro Garcia
2016 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
FORSAT supports most of the VHR optically imagery commonly used for civil applications: IKONOS, OrbView – 3, SPOT – 5 HRS, SPOT – 5 HRG, QuickBird, GeoEye-1, WorldView-1/2, Pléiades 1A/1B, SPOT 6/7, and  ...  To this end our 3D surface matching method LS3D is being used.  ...  © of October 2001, (b) Pléiades image © of July 2014, (c) Ikonos DSM, (d) Pléiades DSM.  ... 
doi:10.5194/isprs-archives-xli-b8-1213-2016 fatcat:admoq2ieifbuliotvya4lolqom

VOLUMETRIC FOREST CHANGE DETECTION THROUGH VHR SATELLITE IMAGERY

Devrim Akca, Efstratios Stylianidis, Konstantinos Smagas, Martin Hofer, Daniela Poli, Armin Gruen, Victor Sanchez Martin, Orhan Altan, Andreas Walli, Elisa Jimeno, Alejandro Garcia
2016 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
FORSAT supports most of the VHR optically imagery commonly used for civil applications: IKONOS, OrbView – 3, SPOT – 5 HRS, SPOT – 5 HRG, QuickBird, GeoEye-1, WorldView-1/2, Pléiades 1A/1B, SPOT 6/7, and  ...  To this end our 3D surface matching method LS3D is being used.  ...  © of October 2001, (b) Pléiades image © of July 2014, (c) Ikonos DSM, (d) Pléiades DSM.  ... 
doi:10.5194/isprsarchives-xli-b8-1213-2016 fatcat:xrdo65w6xndurm43kf5ljzi2nq

Glacier topography and elevation changes derived from Pléiades sub-meter stereo images

E. Berthier, C. Vincent, E. Magnússon, Á. Þ. Gunnlaugsson, P. Pitte, E. Le Meur, M. Masiokas, L. Ruiz, F. Pálsson, J. M. C. Belart, P. Wagnon
2014 The Cryosphere  
We also demonstrate the high potential of Pléiades DEMs for measuring seasonal, annual and multi-annual elevation changes with an accuracy of 1 m or better if cloud-free images are available.  ...  For Iceland, the Pléiades DEM is also compared to a lidar DEM. The vertical biases of the Pléiades DEMs are less than 1 m if ground control points (GCPs) are used, but reach up to 7 m without GCPs.  ...  Hosford) within the framework of the CNES Pléiades thematic commissioning phase and the Airbus Defence and Space "Pléiades User Group".  ... 
doi:10.5194/tc-8-2275-2014 fatcat:oxszlftuc5d2rkq5huihg4ha5u

Situational Awareness of Large Infrastructures Using Remote Sensing: The Rome–Fiumicino Airport during the COVID-19 Lockdown

Andrea Pulella, Francescopaolo Sica
2021 Remote Sensing  
We integrate multiple data sources acquired by different spaceborne sensors, such as Sentinel-1 Synthetic Aperture Radar (SAR) time series, Sentinel-2 multispectral data, and Pleiades Very-High-Resolution  ...  We developed this methodology for the COVID-19 Custom Script Contest, a remote hackathon funded by the European Space Agency (ESA) and the European Commission (EC), whose aim was to promote remote sensing  ...  Pros (Y) and Cons (N) comparison table among HR Sentinel-1/-2 data, VHR Pleiades data, and their combination.  ... 
doi:10.3390/rs13020299 fatcat:jwwtbr7psre2zddjwh3bc73xga

Mapping snow depth in open alpine terrain from stereo satellite imagery

R. Marti, S. Gascoin, E. Berthier, M. de Pinel, T. Houet, D. Laffly
2016 The Cryosphere Discussions  
The Pléiades images benefit from a very broad radiometric range (12 bits), allowing a high correlation success rate over the snow-covered areas.  ...  Two triplets of 70 cm-resolution images were acquired by the Pléiades satellite over an open alpine catchment (14.5 km<sup>2</sup>) under snow-free and snow-covered conditions.  ...  The Pléiades images acquisition was supported by the CNES through the ISIS Pléiades programme (Projet CRYOPYR-  ... 
doi:10.5194/tc-2016-11 fatcat:iw4ftbhnhzerjhlo7x4ntdymxq

Copernicus Sentinel-2A Calibration and Products Validation Status

Ferran Gascon, Catherine Bouzinac, Olivier Thépaut, Mathieu Jung, Benjamin Francesconi, Jérôme Louis, Vincent Lonjou, Bruno Lafrance, Stéphane Massera, Angélique Gaudel-Vacaresse, Florie Languille, Bahjat Alhammoud (+11 others)
2017 Remote Sensing  
An overview of the MSI imaging payload is provided in the following section.  ...  Sentinel-2A launch took place in June 2015 and Sentinel-2B is foreseen beginning 2017. Therefore, this paper focuses only on the performances achieved by Sentinel-2A.  ...  in the frame of MPC, see world distribution in Figure 45 . • Pleiades HR database including more than 500 images with an accuracy less than 5 m is used by CNES.  ... 
doi:10.3390/rs9060584 fatcat:fglsduu6g5bjpd6nmxpspa2hfy

Dynamical analysis of nearby clusters

H. Bouy, E. Bertin, E. Moraux, J.-C. Cuillandre, J. Bouvier, D. Barrado, E. Solano, A. Bayo
2013 Astronomy and Astrophysics  
We present here the method used to derive precise proper motion measurements, using the Pleiades cluster as a test bench.  ...  Combining deep wide field multi-epoch panchromatic images obtained at various obervatories over up to 14 years, we derive accurate proper motions for the sources present in the field of the survey.  ...  Large and all-sky surveys are also on-going (e.g Pann-STARRS,ESO-VST, ESO-VISTA) or foreseen (DES, LSST), ensuring a large flow of high quality images useable for high precision astrometry.  ... 
doi:10.1051/0004-6361/201220748 fatcat:sgob7bnihjf6tophawsljltr3m

Methods for Mapping Forest Disturbance and Degradation from Optical Earth Observation Data: a Review

Manuela Hirschmugl, Heinz Gallaun, Matthias Dees, Pawan Datta, Janik Deutscher, Nikos Koutsias, Mathias Schardt
2017 Current Forestry Reports  
Part two reviews the two main categories of existing approaches: classical image-to-image change detection and time series analysis.  ...  Four time series classification methods are distinguished. The methods are explained and their benefits and drawbacks are discussed.  ...  The basis for the assessment was a dense time series of satellite imagery consisting of Spot-HR, Landsat 5-8, RapidEye, Pléiades, ALOS AVNIR and ASTER data.  ... 
doi:10.1007/s40725-017-0047-2 fatcat:ckldo2vb2rejldgy7h37pldwzi

GaiaData Release 1

A. G. A. Brown, A. Vallenari, T. Prusti, J. H.J. de Bruijne, F. Mignard, R. Drimmel, C. Babusiaux, C. A.L. Bailer-Jones, U. Bastian, M. Biermann, D. W. Evans, L. Eyer (+579 others)
2016 Astronomy and Astrophysics  
We summarize Gaia DR1 and provide illustrations of the scientific quality of the data, followed by a discussion of the limitations due to the preliminary nature of this release.  ...  Nevertheless, the very preliminary nature of this first Gaia data release does lead to a number of important limitations to the data quality which should be carefully considered before drawing conclusions  ...  Image credits: CENTRA − University of Lisbon (part of the DPAC-CU9 visualisation team). Fig. 3 . 3 Comparison of the observational HR diagram in the M G vs.  ... 
doi:10.1051/0004-6361/201629512 fatcat:nbnqv3kv5fblnduhlh34ehui4e

Commission 45: Stellar Classification: (Classification Stellaire)

Michèle Gerbaldi, Thomas Lloyd Evans, Juan Ciaria, Christopher Corbally SJ, John Drilling, Catherine Garmany, Richard O. Gray, Donald Wayne Kurtz, Orlando Hugo Levato, Pierre North, Kazimeras Zdanavicius
2000 Transactions of the International Astronomical Union  
I am very grateful to the members of Commission 45 who have written the various sections of this Report, as well as to the members of the organizing committee who have contributed to its preparation through  ...  Large surveys have been completed or are foreseen.  ...  These cooler Pleiads are believed to be brown dwarfs.  ... 
doi:10.1017/s0251107x00002984 fatcat:entpvahaxzh5vouvzlocrsr2fa

Guidelines on the improvement of future missions support for thematic applicationsv2

Antonella Catucci
2020 Zenodo  
• Multispectral HHR: Planet • Multispectral VHR: Pleiades • Thermal data: LSTM • Microwave data: CIMS • Radar HR C-Band: Sentinel-1 • Radar HR L-Band: ROSE • Radar HR and VHR X-Band: Cosmo Sky MedOf course  ...  The current suite of Sentinel missions is at the heart of the Copernicus program, led by the European Commission.  ... 
doi:10.5281/zenodo.4248862 fatcat:5mlzvzuxhfcrzfnzi54jtxz3em

SPOTS: The Search for Planets Orbiting Two Stars

C. Thalmann, S. Desidera, M. Bonavita, M. Janson, T. Usuda, T. Henning, R. Köhler, J. Carson, A. Boccaletti, C. Bergfors, W. Brandner, M. Feldt (+4 others)
2014 Astronomy and Astrophysics  
Direct imaging surveys for exoplanets commonly exclude binary stars from their target lists, leaving a large part of the overall planet demography unexplored.  ...  To address this gap in our understanding of planet formation and evolution, we have launched the first direct imaging survey dedicated to circumbinary planets: SPOTS, the Search for Planets Orbiting Two  ...  C.Th. is supported by the European Commission under the Marie Curie IEF grant No. 329875, and JCa by the US National Science Foundation under award No. 1009203.  ... 
doi:10.1051/0004-6361/201424581 fatcat:aymafb2d25cw7jadypkuc4fjvi

Europe's Green Arteries—A Continental Dataset of Riparian Zones

Christof Weissteiner, Martin Ickerott, Hannes Ott, Markus Probeck, Gernot Ramminger, Nicola Clerici, Hans Dufourmont, Ana de Sousa
2016 Remote Sensing  
including Digital Elevation Models, hydrological, soil, land cover/land use data, and vegetation indices is employed in a multi-modular and stratified approach, based on fuzzy logic and object based image  ...  In terms of model sensitivity, the applied data combination method to create meaningful products plays, apart from data availability and inherent quality, an important role.  ...  Minor riparian areas might be missing or not interpreted correctly, leading to omission or commission errors.  ... 
doi:10.3390/rs8110925 fatcat:x4i6modf2begpbzpphn75shwje
« Previous Showing results 1 — 15 out of 27 results