Détail d'une collection
SPIE Proceedings
ISSN :
pas d'ISSN
|
Documents disponibles dans la collection (28)
Ajouter le résultat dans votre panier
Visionner les documents numériques
Affiner la recherche Interroger des sources externesCorrelated atom accelerometers for mapping the Earth gravity field from space / Thomas Lévèque (2019)
Titre : Correlated atom accelerometers for mapping the Earth gravity field from space Type de document : Article/Communication Auteurs : Thomas Lévèque, Auteur ; C. Fallet, Auteur ; Mioara Mandea, Auteur ; Richard Biancale, Auteur ; Jean-Michel Lemoine, Auteur ; Simon Tardivel, Auteur ; Marc Delpech, Auteur ; Guillaume Ramillien, Auteur ; Isabelle Panet Editeur : Washington : Society of Photo-Optical Instrumentation Engineers SPIE Année de publication : 2019 Collection : SPIE Proceedings num. 11180 Projets : 1-Pas de projet / Conférence : ICSO 2018, International Conference on Space Optics 09/10/2018 12/10/2018 Chania Grèce Proceedings SPIE Importance : 9 p. Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] accélération
[Termes IGN] accéléromètre
[Termes IGN] champ de pesanteur terrestre
[Termes IGN] mission spatialeRésumé : (auteur) The emergence of quantum technologies, including cold atom based accelerometers, offers an opportunity to improve the performances of space geodesy missions. In this context, CNES initiated an assessment study called GRICE (GRadiométrie à Interféromètres quantiques Corrélés pour l’Espace) in order to evaluate the impact of cold atom technologies to space geodesy and to the end users of the geodetic data. In this paper, we present a specific mission scenario for gravity field mapping based on a twin satellite concept. The mission uses a constellation of two satellites each equipped with a cold atom accelerometer. A laser link measures the distance between the two satellites and couples these two instruments in order to produce a correlated differential acceleration measurement. The main parameters, determining the performances of the payload, have been investigated. In addition, a preliminary study of mass, consumption and volume has been conducted to ensure the onboard feasibility of these instruments. A general study of the satellite architecture, including all the subsystems, has also been realized and is presented here. Numéro de notice : C2018-126 Affiliation des auteurs : LASTIG LAREG+Ext (2012-mi2018) Thématique : POSITIONNEMENT Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1117/12.2535951 En ligne : https://doi.org/10.1117/12.2535951 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=100045
Titre : Sentinel-2A image quality commissioning phase final results: geometric calibration and performances Type de document : Article/Communication Auteurs : Florie Languille, Auteur ; Angélique Gaudel, Auteur ; Cécile Dechoz, Auteur ; Daniel Greslou, Auteur ; Françoise de Lussy, Auteur ; Thierry Trémas, Auteur ; Vincent Poulain, Auteur ; Stéphane Massera Editeur : Washington : Society of Photo-Optical Instrumentation Engineers SPIE Année de publication : 2016 Collection : SPIE Proceedings num. 10000 Conférence : SPIE Remote Sensing 2016, Sensors, Systems, and Next-Generation Satellites XX 26/09/2016 29/09/2016 Edimbourg Royaume-Uni Proceedings SPIE Note générale : bibliographie
in Sensors, Systems, and Next-Generation Satellites XXLangues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] étalonnage géométrique
[Termes IGN] image Sentinel-MSI
[Termes IGN] qualité d'image
[Termes IGN] test de performanceRésumé : (auteur) In the frame of the Copernicus program of the European Commission, Sentinel-2 offers multispectral high-spatial-resolution optical images over global terrestrial surfaces. In cooperation with ESA, the Centre National d’Etudes Spatiales (CNES) is in charge of the image quality of the project, and so ensures the CAL/VAL commissioning phase during the months following the launch. Sentinel-2 is a constellation of 2 satellites on a polar sun-synchronous orbit with a revisit time of 5 days (with both satellites), a high field of view - 290km, 13 spectral bands in visible and shortwave infrared, and high spatial resolution - 10m, 20m and 60m. The Sentinel-2 mission offers a global coverage over terrestrial surfaces. The satellites acquire systematically terrestrial surfaces under the same viewing conditions in order to have temporal images stacks. The first satellite was launched in June 2015. Following the launch, the CAL/VAL commissioning phase is then lasting during 6 months for geometrical calibration. This paper will point on observations and results seen on Sentinel-2 images during commissioning phase. It will provide explanations about Sentinel-2 products delivered with geometric corrections. This paper will detail calibration sites, and the methods used for geometrical parameters calibration and will present linked results. The following topics will be presented: viewing frames orientation assessment, focal plane mapping for all spectral bands, results on geolocation assessment, and multispectral registration. There is a systematic images recalibration over a same reference which is a set of S2 images produced during the 6 months of CAL/VAL. This set of images will be presented as well as the geolocation performance and the multitemporal performance after refining over this ground reference. Numéro de notice : C2016-043 Affiliation des auteurs : IGN+Ext (2012-2019) Thématique : IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1117/12.2236313 Date de publication en ligne : 14/12/2016 En ligne : https://doi.org/10.1117/12.2236313 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91856
Titre : Sentinel 2 global reference image Type de document : Article/Communication Auteurs : Cécile Dechoz, Auteur ; Vincent Poulain, Auteur ; Stéphane Massera Editeur : Washington : Society of Photo-Optical Instrumentation Engineers SPIE Année de publication : 2015 Collection : SPIE Proceedings num. 9643 Conférence : SPIE 2015, Image and Signal Processing for Remote Sensing XXI 21/09/2015 24/09/2015 Toulouse France Proceedings SPIE Note générale : biblio Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] compensation par faisceaux
[Termes IGN] étalonnage des données
[Termes IGN] image Sentinel-MSI
[Termes IGN] modèle géométrique de prise de vue
[Termes IGN] qualité d'imageRésumé : (auteur) Sentinel-2 is a multispectral, high-resolution, optical imaging mission, developed by the European Space Agency (ESA) in the frame of the Copernicus program of the European Commission. In cooperation with ESA, the Centre National d’Etudes Spatiales (CNES) is responsible for the image quality of the project, and will ensure the CAL/VAL commissioning phase. Sentinel-2 mission is devoted the operational monitoring of land and coastal areas, and will provide a continuity of SPOT- and Landsat-type data. Sentinel-2 will also deliver information for emergency services. Launched in 2015 and 2016, there will be a constellation of 2 satellites on a polar sun-synchronous orbit, imaging systematically terrestrial surfaces with a revisit time of 5 days, in 13 spectral bands in visible and shortwave infra-red. Therefore, multi-temporal series of images, taken under the same viewing conditions, will be available. So as to ensure for the multi-temporal registration of the products, specified to be better than 0.3 pixels at 2σ, a Global Reference Image (GRI) will be produced during the CAL/VAL period. This GRI is composed of a set of Sentinel-2 acquisitions, which geometry has been corrected by bundle block adjustment. During L1B processing, Ground Control Points will be taken between this reference image and the sentinel-2 acquisition processed and the geometric model of the image corrected, so as to ensure the good multi-temporal registration. This paper first details the production of the reference during the CALVAL period, and then details the qualification and geolocation performance assessment of the GRI. It finally presents its use in the Level-1 processing chain and gives a first assessment of the multi-temporal registration. Numéro de notice : C2015-059 Affiliation des auteurs : IGN+Ext (2012-2019) Thématique : IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1117/12.2195046 Date de publication en ligne : 15/10/2015 En ligne : https://doi.org/10.1117/12.2195046 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90648
Titre : Space volcano observatory (SVO): a metric resolution system on-board a micro/mini-satellite Type de document : Article/Communication Auteurs : Pierre Briole, Auteur ; Guy Cerutti-Maori, Auteur ; Michel Kasser Editeur : Washington : Society of Photo-Optical Instrumentation Engineers SPIE Année de publication : 2000 Collection : SPIE Proceedings num. 10569 Conférence : ICSO 2000, International Conference on Space Optics 05/12/2000 12/12/2000 Toulouse France Proceedings SPIE Importance : 14 p. Format : 21 x 30 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] éruption volcanique
[Termes IGN] séisme
[Termes IGN] surveillance géologiqueRésumé : (auteur) 1500 volcanoes on the Earth are potentially active, one third of them have been active during this century and about 70 are presently erupting. At the beginning of the third millenium, 10% of the world population will be living in areas directly threatened by volcanoes, without considering the effects of eruptions on climate or air-trafic for example. The understanding of volcanic eruptions, a major challenge in geoscience, demands continuous monitoring of active volcanoes. The only way to provide global, continuous, real time and all-weather information on volcanoes is to set up a Space Volcano Observatory closely connected to the ground observatories. Spaceborne observations are mandatory and implement the ground ones as well as airborne ones that can be implemented on a limited set of volcanoes. SVO goal is to monitor both the deformations and the changes in thermal radiance at optical wavelengths from high temperature surfaces of the active volcanic zones. For that, we propose to map at high resolution (1 to 1,5 m pixel size) the topography (stereoscopic observation) and the thermal anomalies (pixel-integrated temperatures above 450°C) of active volcanic areas in a size of 6 x 6 km to 12 x 12 km, large enough for monitoring most of the target features. A return time of 1 to 3 days will allow to get a monitoring useful for hazard mitigation. The paper will present the concept of the optical payload, compatible with a micro/mini satellite (mass in the range 100 - 400 kg), budget for the use of Proteus platform in the case of minisatellite approach will be given and also in the case of CNES microsat platform family. This kind of design could be used for other applications like high resolution imagery on a limited zone for military purpose, GIS, evolution cadaster… Numéro de notice : C2000-007 Affiliation des auteurs : UMR IPGP-Géod+Ext (2020- ) Thématique : POSITIONNEMENT Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1117/12.2307900 En ligne : https://doi.org/10.1117/12.2307900 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102918
Titre : Detecting planar patches in urban scenes Type de document : Article/Communication Auteurs : Frank Fuchs Editeur : Washington : Society of Photo-Optical Instrumentation Engineers SPIE Année de publication : 1999 Collection : SPIE Proceedings num. 3716 Conférence : SPIE 1999, Visual Information Processing 8 06/04/1999 12/12/2000 Orlando Floride - Etats-Unis Proceedings SPIE Importance : pp 167 - 176 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] détection d'objet
[Termes IGN] disparité
[Termes IGN] façade
[Termes IGN] graphe planaire
[Termes IGN] image aérienne
[Termes IGN] modèle numérique de surface
[Termes IGN] segmentation d'image
[Termes IGN] toitRésumé : (auteur) In this paper, a new criterion based on the Minimum Description Length (MDL) principle is proposed to guide a region growing procedure. Since the MDL principle is known to realize the compromise between complexity of modeling and adequacy to the data in a homogeneous way, it is well suited for detecting cartographic objects in aerial images, because their representation has to be simple and realistic. The procedure is dedicated to segment disparity maps or Digital Evaluation Models into planar regions, and so detect 3D planar patches in the scenes. The principle is shown to be able to introduce constraints on the segmentation. By making one term of the Description Length vary, different levels of representation of the scene are obtained. This makes it possible to get concurrent 3D planar hypotheses. The procedure is applied on disparity maps or on digital elevation models computed on gray level aerial high resolution stereo pairs, in urban context. On these data, those roofs and visible facades are extracted by the procedure. Numéro de notice : C1999-002 Affiliation des auteurs : MATIS (1993-2011) Thématique : IMAGERIE Nature : Poster nature-HAL : Poster-avec-CL DOI : 10.1117/12.354704 En ligne : https://doi.org/10.1117/12.354704 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86022 Integrating photogrammetric techniques with scene analysis and machine vision 3, Orlando (Florida), 21 - 23 avril 1997 / David M. McKeown (1997)
PermalinkPermalinkPermalinkPermalinkPermalink
PermalinkPermalinkPermalink
