Teses / dissertações sobre o tema "Satellite spots"
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Morgan, Ryan S. "Volcanism on Io spectral modeling of volatile deposits near active hot spots /". Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1663116511&sid=3&Fmt=2&clientId=18949&RQT=309&VName=PQD.
Texto completo da fonteAmorim, Emmanuel. "Arcs électriques sur panneaux solaires de satellite". École nationale supérieure de l'aéronautique et de l'espace (Toulouse ; 1972-2007), 2002. http://www.theses.fr/2002ESAE0011.
Texto completo da fonteDas, Sujata. "Automatic detection of roads in spot satellite images". Thesis, Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/80011.
Texto completo da fonteMaster of Science
Pébayle, Josée. "L'Intérêt en géographie des données du satellite Spot (à partir de simulations)". Paris 1, 1986. http://www.theses.fr/1986PA010536.
Texto completo da fonteNominé, Anna V. "Synthesis of Bi₂O₂CO₃ nanosheets by electrical discharges in liquids for photocatalytic and nanoelectronic applications". Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0357.
Texto completo da fonteThis work provides information on the synthesis of ultrathin nanosheets composed of Bi₂O₂CO₃, hereafter referred to as BOC. The synthesis is achieved through the rapid and straightforward technique known as Electrical Discharges in Dielectric Liquids (EDDL). To ensure the reproducibility of the synthesis, a pre-treatment method involving the etching of bismuth electrodes with Nital was employed. The chosen process entails initiating electrical discharges between these electrodes while submerged in either liquid nitrogen or water. Remarkably, both liquids produced identical nanostructures, a similarity validated by optical emission spectroscopy, which confirmed the metallic nature of the discharge in both environments. Following this stage, the nanosheets undergo rapid oxidation and carbonation upon exposure to air. The proposed growth mechanism is closely linked to the ledge mechanism, considering the presence of clearly visible kinks and jogs along the edges of the nanosheets. These two-dimensional nanostructures first emerge on the cathode's surface and then grow vertically. This anisotropic growth is made possible by ion assistance in regions that exhibit comb-like patterns formed during the chemical etching step, which is a necessary precondition for high reproducibility of the discharge process. Detailed crystallographic characterization of BOC nanosheets was achieved through a range of techniques, including Transmission Electron Microscopy (TEM), Scanning Transmission Electron Microscopy (STEM), High-Resolution TEM Transmission Electron Microscopy (HRTEM), Energy-Dispersive X-ray Spectroscopy (EDX), Selected Area Electron Diffraction (SAED), Convergent Beam Electron Diffraction (CBED), Energy Filtered Transmission Electron Microscopy (EFTEM), and Electron Energy-Loss Spectroscopy (EELS). The investigation reveals that the crystallographic structure of BOC conforms to the space group I4/mmm, with lattice parameters a=3.91 Å and c=13.77 Å, a determination that was confirmed by X-ray Diffraction (XRD). The study also clarifies the potential origin of satellite spots that are consistently observed in SAED patterns along the [001] zone axis. In this research, these spots were primarily attributed to two phenomena: multiple diffraction and local disorder-to-order transformations occurring within the BOC crystal structure. This transformation entails a transition from a body-centered tetragonal structure to a primitive Bravais lattice. To gauge their practical usefulness, we assessed the photocatalytic performance of BOC nanosheets synthesized using the EDDL method and found it to be consistent with BOC obtained through alternative methods. Furthermore, we explored the electronic performance of BOC with the goal of uncovering their potential in nanodevice applications
Bursais, Abdulmalek. "Accelerometry and Global Navigation Satellite Systems Derived Training Loads". Digital Commons @ East Tennessee State University, 2021. https://dc.etsu.edu/etd/3939.
Texto completo da fonteEl-Hajjaji, Abdellah. "Traitement numérique en 3D d'un couple d'images stéréo du satellite SPOT". Rouen, 1993. http://www.theses.fr/1993ROUES028.
Texto completo da fonteThe aim of our research was to extract the level h of a precise landscape taken over two differents angles by the satellite SPOT. To do so, we have modelised the movement of the satellite and his optical system to transform the two first images in another one, epipolar which will allow us to reduce the matching time and to find with success the equivalent pixels. For the pairing, we have utilised a technic wich is based on the corrolation and of the dynamic programming. This method was very satisfactory and allow us to match 96 % of the equivalent pixels, with an error of less than 5 meters, but the original problem is still a matter of research for complimentary studing
NHUN, FAT BEATRICE. "Determination precise de l'orbite d'un satellite a suivi doppler et du champ de gravite de la terre : application au satellite spot2". Toulouse 3, 1991. http://www.theses.fr/1991TOU30110.
Texto completo da fontePébayle, Josée. "L'Intérêt en géographie des données du satellite Spot, à partir de simulation". Lille 3 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37600310h.
Texto completo da fonteVeillet, Isabelle. "Triangulation spatiale de bloc d'images SPOT". Observatoire de Paris, 1991. https://hal.archives-ouvertes.fr/tel-02095460.
Texto completo da fonteBesides its image quality, the main advantage of Sport system is its geometric accuracy. The aim of this study is the evaluation of what block adjustment can bring to Spot images geometric processing, in order to process together all the images of a space mapping project. The actual advantage of this kind of computation is shown here. Before, a model of the image-ground relationship must be given. The proposed model is simple, robust and close to the physical image acquisition. With very few control points, the resulting accuracy is less than 10 meters in planimetry, and 6 meters in altimetry. These figures fit most standards of 1:50000 scale topographic maps. Without any ground control point, the accuracy is 15 meters on 200 km x 200 km area
RENOUARD, LAURENT. "Restitution automatique du relief a partir de couples stereoscopiques d'images du satellite spot". Palaiseau, École polytechnique, 1991. http://www.theses.fr/1991EPXX0023.
Texto completo da fonteRoux, Michel. "Recalage d'images multi-sources : application au recalage d'une image spot et d'une carte /". Paris : École nationale supérieure des télécommunications, 1993. http://catalogue.bnf.fr/ark:/12148/cb355798640.
Texto completo da fonteDiarra, Balla. "Dynamique spatiale et politiques urbaines à Bamako : le rôle des images-satellite SPOT dans la gestion des villes". Aix-Marseille 1, 1999. http://www.theses.fr/1999AIX10095.
Texto completo da fonteChamignon, Christel. "Evaluation comparée des satellites à haute résolution spatiale en zone de moyenne et haute montagne méditerranéenne (données TM de LANDSATt 4 et HRV de SPOT 1)". Aix-Marseille 3, 1990. http://www.theses.fr/1990AIX30056.
Texto completo da fonteSerendero, Mary Alín. "Extraction d'informations symboliques en imagerie SPOT : réseaux de communication et agglomérations". Nice, 1989. http://www.theses.fr/1989NICE4322.
Texto completo da fonteBen, Moussa Habib. "Contribution de la télédétection satellitaire à la cartographie des végétaux marins : archipel de Molène (Bretagne / France)". Aix-Marseille 2, 1987. http://www.theses.fr/1987AIX22095.
Texto completo da fonteCASTAGNAS, LUCE. "Quelques aspects de la synergie entre les images des satellites spot et ers". Nice, 1995. http://www.theses.fr/1995NICE4889.
Texto completo da fonteSix, Catherine. "Station automatique de mesures pour l'étalonnage en vol des capteurs satellitaires : application à SPOT/HRV sur le site de La Crau". Phd thesis, Université du Littoral Côte d'Opale, 2002. http://tel.archives-ouvertes.fr/tel-00003404.
Texto completo da fonteLa théorie du transfert radiatif est utilisée pour prédire le signal satellitaire et nous en rappelons les principes. Nous présentons ensuite les satellites SPOT, en particulier SPOT4. Enfin, nous exposons les méthodes employées pour l'étalonnage absolu et relatif des capteurs.
Notre instrumentation consiste en un radiomètre entièrement étalonné in situ. L'étalonnage en éclairement est basé sur la méthode de Bouguer. En luminance, il est effectué aux courtes longueurs d'onde sur la diffusion Rayleigh. Enfin, l'étalonnage est propagé aux
grandes longueurs d'onde grâce à une méthode originale. Nous présentons un bilan de l'étalonnage in situ de la station.
Les effets atmosphériques et la réflectance de surface sont évalués à partir des mesures de la station. Les aérosols sont décrits par leur épaisseur optique et leur granulométrie, représentée par un modèle de Junge. La réflectance bidirectionnelle est ramenée dans la
géométrie de visée du satellite grâce à une modélisation des effets directionnels.
La luminance TOA est alors estimée. La transmission gazeuse est calculée par le code 6S. Le code des Ordres Successifs de Diffusion est utilisé pour calculer le signal TOA. Nous avons évalué quatre jeux de coefficients pour SPOT4 et un pour SPOT2. La comparaison avec les coefficients du CNES montre un écart plus important que l'incertitude estimée de notre méthode. L'écart reste comparable à ceux obtenus auparavant sur La Crau. Il ne semble pas dû à un biais systématique et pourra être réduit par une collecte conséquente. Maintenant opérationnelle, la station permettra cette collecte, améliorant ainsi l'estimation des coefficients de SPOT.
Memier, Michel. "Stéréophotogrammétrie numérique : calcul de M.N.T. par corrélation automatique d'images SPOT". Université Joseph Fourier (Grenoble), 1991. http://www.theses.fr/1991GRE10083.
Texto completo da fonteGardelle, Julie. "Evolution récente des glaciers du Pamir-Karakoram-Himalaya : apport de l'imagerie satellite". Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00864042.
Texto completo da fonteKhatir, Leyla. "Recherche d'algorithmes de localisation de routes dans les images haute resolution : application a l'imagerie spot". Toulouse 3, 1988. http://www.theses.fr/1988TOU30080.
Texto completo da fonteKhatir, Leyla. "Recherche d'algorithmes de localisation des routes dans les images satellite à haute résolution application à l'imagerie spot /". Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37614713t.
Texto completo da fonteEwen, Jenny. "Serum Hs-CRP in elderly women affects the proliferative capacity of human myoblast". Thesis, Örebro universitet, Institutionen för hälsovetenskap och medicin, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-25294.
Texto completo da fontePuyou-Lascassies, Philippe. "Surveillance des comportements radiométriques en paysage agricole hétérogène avec des données satellitaires à haute et à basse résolution spatiale". Toulouse 3, 1994. http://www.theses.fr/1994TOU30270.
Texto completo da fonteGastellu-Etchegorry, Jean-Philippe. "Une évaluation du potentiel cartographique et thématique de SPOT en Indonésie : [thèse en partie soutenue sur un ensemble de travaux]". Toulouse 3, 1989. http://www.theses.fr/1989TOU30224.
Texto completo da fontePEREIRA, TENEDORIO JOSE ANTONIO. "Teledetection en milieu periurbain : detection et localisation du changement de l'occupation du sol par integration des donnees-satellite spot hrv dans un systeme d'information geographique". Paris 12, 1998. http://www.theses.fr/1998PA120060.
Texto completo da fonteThis thesis presents a investigation which lead to a methodology proposal to locate and detect land cover changes in the urban fringe through the combination of spot hrv satellite image processing in a geographic information system (gis). Using multi-source data (satellite images and land cover maps) the discussed procedure allows to systematically determinate affectation zone changes in the urban fringe. The chosen technique relies on zone analysis applying six indexes: the panchromatic band, the vegetation index, the brightness index, the standard deviation, the recent mineralization index and the +nonwater; index. For each one of these indexes a stability limit was defined regarding the statistical parameters of the considered classes. The final result is materialised on a zone affectation change map
Petit-Frère, Jacques. "Améliorations des techniques de stéréorestitution : prise en compte des différences photométriques entre images /". Paris : École nationale supérieure des télécommunications, 1994. http://catalogue.bnf.fr/ark:/12148/cb35707867f.
Texto completo da fonteSlimani, Mustapha. "Analyse de texture en teledetection : application a la segmentation d'images satellites a haute resolution type spot". Rennes 1, 1986. http://www.theses.fr/1986REN10119.
Texto completo da fonteSlimani, Mustapha. "Analyse de texture en télédétection application à la segmentation d'images satellites à haute résolution type SPOT /". Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37601259t.
Texto completo da fonteKedjar, Aboubekr-Seddik. "Recherches sur les possibilités cartographiques de SPOT dans les zones sub-méditerranéennes". Observatoire de Paris, 1992. https://hal.archives-ouvertes.fr/tel-02071387.
Texto completo da fonteThe satellite SPOT with a resolution of 10 meters offers new possibilities for making topographic maps. As expected, with such high resolution, SPOT enables to make maps at small and medium scales and the restitution of the topography, owing to its stereoscopic possibilities. To assess the cartographic performances of SPOT in the sub-mediterranean areas, two test-fields of southern Algeria have been selected. The first one concerus a SPOT model including the sub-urban area of Ghardaia and the second one deals with two stereoscopic tied strips covering a cartographic format of about 12000 km2 at a 1/200. 000 scale. These experiments allowed to : define the resulting accuracies and the optimum scales of the maps ; refine the different steps in the process of the map making (ground control, spatial triangulation, etc…) ; present a variety of cartographic products (classical map, monochrome and color image based maps, etc…) ; estimate the costs and times of a complete cartographic process
Montesinos, Julien. "Traitement d'antenne SDMA pour système de télécommunications par satellite avec couverture dispersée". Toulouse, ISAE, 2009. http://www.theses.fr/2009ESAE0012.
Texto completo da fonteDago, Pierre. "Extension d'algorithmes dans le cadre des problèmes de satisfaction de contraintes valués : application à l'ordonnancement de systèmes satellitaires". Toulouse, ENSAE, 1997. http://www.theses.fr/1997ESAE0006.
Texto completo da fonteCherel, Jean-Philippe. "Maitriser l'amenagement urbain en afrique subsaharienne : interet des images-satellite spot : exemples de nairobi (kenya) et de ouagadougou (burkina faso)". Montpellier 3, 1994. http://www.theses.fr/1994MON30056.
Texto completo da fonteThe demographic "burst" of urban population in sub-saharan africa concerns, firstly, big cities - in general the capital which now face extremely rapid transformations since the sixties. Escaping to a great extent from the authorities contro this growth - which stems from deep crises of demographic, economic, political and social combination - appears as the densification of old central areas and a huge space consumption in outskirt areas. Therefore, the population standard li is drastically degrated and the environment of peri-urban zones of these towns sustain serious difficulties. Urgent measures have to be taken in order to restore a rational planning of this urban space implying that public authorities h their disposal the essential basic data. Due to the speed of different changes and the weakness of financial, technical human means in most of the states, the traditional techniques of information collection not enable the data to be sufficiently updated. With the service of the earth observation satellites such as spot, the satellite remote sensing ma constitute, despite some restrictions and limitations, a new tool requiring the needs of the whole of those responsible the urban planning. The high spatial resolution of spot images (10 and 20 meters), the ability of the satellite to suppl sufficiently regular manner, images at accessible cost enable their practical use in the african urban context. The necessary information can be obtained with the help of a visual interpretation of images issued from relatively simple d processing. A simple example of the use of spot images to follow-up the urban growth is given from a study performed on two big towns in sub-saharan africa : nairobi (kenya), and ouagadougou (burkina faso). After having re-drawn the history of the urban planning and presented the main factors of the urbanisatioin, it is shown how far it is possible to take ad from the exploitation of the satellite images at various scales, not only to establish the typology of the ground occupa but also to bring out urban dynamics
Eberhard, Jean-Michel. "Urbanisation et développement urbain du sud-est de l'agglomération de Mexico entre 1986 et 1989 : étude à l'aide de l'imagerie SPOT". Paris, EHESS, 1994. http://www.theses.fr/1994EHES0069.
Texto completo da fonteThis work firstly deals the historical and geographical situation from recent studies about mexico city agglomeration, specifically chalco, showing difficulties due to urbanization, its stakes, and leading to choose remote sensing as a means to localize and observe urban development. The study of remote sensing is based mainly on the synthesis and the abundant information contained in the color composite. The march 1986 spot image one allows a visual interpretation and a study of the mexico city agglomeration, a statistical analysis and a classification of the image portions using the data analysis methods. The crossing of classifications established according to the pinpoint information (color) and to the contextual information (image texture) allows to distinguish the diferent urban aeras. A field survey supplies with a more precise urban information. It is based in a surveys made along transects and it allows to work out urbanometric indicators giving a systematic description of the landscape, and to develop a typology of neighbourhoods according to the characteristics related to building, inter-building, materials, vegetation, roads, functionality. . . The comparison of the results with the december 1989 image allows to establish relations between both types of information. Finally, we analyse the changes observed in our study are, through a neo-channel based on the variation in the radiometric responses between both dates. We obtain informations on the localization, the spatial extension, the form and the nature of the change. . . On an elementary scale, and suggestions for additional research guidelines
Roggeri, Isabelle. "Les méthodes et les techniques de la télédétection appliquées aux sciences de la terre : exemple thématique en Afrique orientale (Tanzanie et Burundi)". Nice, 1990. http://www.theses.fr/1990NICE4413.
Texto completo da fontePouget, Frédéric. "Télédétection et végétation du milieu dunaire aquitain : identification des facies de la dune littorale à partir de données du satellite Spot". Bordeaux 3, 1988. http://www.theses.fr/1988BOR30051.
Texto completo da fonteThe aquitanian littoral is lined by a dune massif, artificially built to protect the landes forest of the moving sand. This dune massif is threatened by the set back of the coast, by the sea and wind erosion, and by the human presence. The national forest office (onf) is in charge of the maintenance of this area. Aerial photographs was already used to cartography at 1 5000eme and 1 25000eme. Scales. In this study, the use of satellite image interpretation to identify the dune vegetation is tested. The first part deals with spectral ground reflectance measurements on main species of the dune environment. It allows to understand their spectral behavior and their radiometric separability. The second part concern the exploitation of satellite data (spot data). Training area are located and their radiometric properties are studied. A bidimensionnal histogram classification allow to distinguish ten classes : 1. Bare sand, 2. Herbaceous clear, 3. Herbaceous middle density, 4. Herbaceous high density, 5. Grey dune up silted, 6. Grey dune stable 7. Degraded forest, 8. Dense forest. This identification of facies allow to describe the dune environment in his intergrality at large or small scale
Pouget, Frédéric. "Télédétection et végétation du milieu dunaire aquitain identification des faciès de la lune littorale à partir de données du satellite SPOT /". Lille 3 : ANRT, 1989. http://catalogue.bnf.fr/ark:/12148/cb37617683f.
Texto completo da fonteCourboules, Jérôme. "Contribution de la télédétection à haute et très haute résolution spatiale à la perception des ressources naturelles renouvelables : exemples d'applications aux zones littorales tropicales de la Mer Rouge (données TM de LANDSAT4, HRV de SPOT1 et photographies aériennes numérisées)". Nice, 1989. http://www.theses.fr/1989NICE4333.
Texto completo da fonteProença, Maria da Conceiçao Machado Sangreman. "La transformée en ondelettes appliquée au traitement d'images de télédétection". Toulouse 3, 1992. http://www.theses.fr/1992TOU30260.
Texto completo da fonteYehiya, Abdou. "Cartographie des couverts forestiers à partir des photographies aériennes et des données satellitaires LandSat et SPOT dans une zone test du Mali (forêt classée du Sousan) en vue de l'identification et du suivi des formations ligneuses". Montpellier 2, 1987. http://www.theses.fr/1987MON20132.
Texto completo da fonteBESSETTES, VINCENT. "Combinaison d'operateurs pour l'interpretation d'images satellites : application a l'extraction et a la classification des zones urbaines dans les images spot". Toulouse 3, 2000. http://www.theses.fr/2000TOU30015.
Texto completo da fonteBassisty, Elisabeth. "Apport de l'imagerie spatiale haute résolution (spot xs, landsat tm) à l'observation et au suivi des ressources naturelles renouvelables en zone steppique aride (sud-algérois)". Aix-Marseille 3, 1998. http://www.theses.fr/1998AIX30108.
Texto completo da fonteMichel, Alain. "Stratification de l'espace urbain à partir d'images satellite pour réaliser un sondage à objectif démographique mise au point et évaluation des méthodes d'analyse des images SPOT et LANDSAT TM en milieu urbain /". Lille 3 : ANRT, 1989. http://catalogue.bnf.fr/ark:/12148/cb376163643.
Texto completo da fonteCamus, Adrien. "Apports de l'imagerie géophysique et de la photographie satellitaire et aérienne à l'étude de l'évolution géomorphologique des marais littoraux au cours de l'Holocène : application aux marais charentais". La Rochelle, 2008. http://www.theses.fr/2008LAROS250.
Texto completo da fonteIn a study aiming to improve soil variability mapping, the integrated use of geophysical survey methods (electromagnetic, electrical and magnetic) and multispectral remote sensing (CASI aerial and SPOT satellite sensors) allow getting complementary data in terms of resolution and covering area. This approach was developed and tested in the aim of improving our knowledge of recent geomorphologic evolution of Western France marshlands. Spreading out a protocol of correcting electromagnetic survey data acquired in anthropic influenced marshland context allows correcting draining canals influence, which involves electrical conductivity diminishing similar to these of natural fluvio-marine palaeostructures present on the study area. At parcel’s scale, high resolution study methods (geophysical surveys, remote sensing and vegetal cartography) conjointly used allow to distinguish soil areas showing moisture and salinity contrasts with precision no reached with one method used alone. In the aim of realizing scale change from local data to landscape scale application, a protocol of estimating soil electrical conductivity from aerial or satellite remote sensing (through vegetal communities) was developed, using a neural network (Radial Basis Functions)
Michel, Alain. "Stratification de l'espace urbain à partir d'images satellite pour réaliser un sondage à objectif démographique : mise au point et évaluation des méthodes d'analyse des images Spot et Landsat TM en milieu urbain". Paris, EHESS, 1988. http://www.theses.fr/1988EHES0066.
Texto completo da fonteVan, der Merwe Hendrik Naude. "Remote sensing driven lithological discrimination within nappes of the Naukluft Nappe Complex, Namibia". Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97147.
Texto completo da fonteENGLISH ABSTRACT: Geological remote sensing is a powerful tool for lithological discrimination, especially in arid regions with minimal vegetative cover to obscure rock exposures. Commercial multispectral imaging satellites provide a broad spectral range with which to target specific rock types. Landsat ETM+ (7), ASTER, and SPOT 5 multispectral images were acquired and digitally processed: band ratioing, principle components analysis, and maximum likelihood supervised classification. The sensors were evaluated on the ability to discriminate between sedimentary rocks in a structurally complex setting. The study focusses on the formations of the Naukluft Nappe Complex, Namibia. Previous work of the area had to be consulted in order to identify the main target rock types. Dolomite, limestone, quartzite, and shale were determined to make up the majority of rock types in the area. Landsat, ASTER, and SPOT 5 imagery were acquired and pre-processed. Each was subjected to transform techniques: band ratios and PCA. Band ratios were tailored to highlighted target rock types as well as a number of control ratios to ensure the integrity of important ratios. PCA components were inspected to find the most useful ones which were combined into FCCs. Transform results, expert knowledge, and a geological map were consulted to identify training and accuracy samples for the supervised classifications. All three classifications made use of the same set of training and accuracy samples to facilitate useful comparisons. Transform results were promising for Landsat and ASTER images, while SPOT 5 struggled. The limited spectral resolution of SPOT 5 limited its use for identifying target rock types, with the superior spatial resolution contributing very little. Landsat benefitted from good spectral resolution. This allowed for good performance with highlighting limestone and dolomite, while being less successful with shale. Quartzite was a real problem as the spectral resolution of Landsat could not cover this range as well. ASTER, having the highest spectral resolution, could distinguish between all four target rock types. Landsat and ASTER results suffered in areas where formations were relatively thin (smaller than sensor spatial resolution). The supervised classification results were similar to the transforms in that both Landsat and ASTER provided useful results, while SPOT 5 failed to yield definitive results. Accuracy assessment determined that ASTER performed the best at 98.72%. Landsat produced an accuracy of 93.29% while SPOT 5 was 80.17% accuracy. Landsat completely overestimated the amount of quartzite present, while all results classified significant proportions Quaternary sediments as shale. Limestone was well represented in even the poorest results, while dolomite usually struggled in areas where it was in close association with quartzite. Silica yields relatively strong responses in the TIR spectrum which could lead to misclassification of dolomite, which also has strong TIR signatures.
AFRIKAANSE OPSOMMING: Geologiese afstandswaarneming is 'n kragtige tegniek vir litologiese diskriminasie, veral in droë streke met minimale plantbedekking om dagsome te verduister. Kommersiële multispektrale satelliete beelde bied 'n breë spektrale reeks waarmee spesifieke gesteentetipes geteiken kan word. Landsat ETM + (7), ASTER, en SPOT 5 multispektrale beelde was bekom en digitaal verwerk: bandverhoudings, hoofkomponente-ontleding, en maksimum waarskynlikheid klassifikasie. Die sensors is geëvalueer op hul vermoë om te onderskei tussen sedimentêre gesteentes in 'n struktureel komplekse omgewing. Die studie fokus op die formasies van die Naukluft Dekblad Kompleks, Namibië. Vorige werk van die area was geraadpleeg om die hoofgesteentetipes te identifiseer. Dit was bepaal dat dolomiet, kalksteen, kwartsiet, en skalie die oorgrote meerderheid van kliptipes in area opgemaak het. Landsat, ASTER, en SPOT 5 beelde is verkry en voorverwerk. Elke beeld was onderwerp aan transformasietegnieke: bandverhoudings en hoofkomponente-ontleding. Bandverhoudings is aangepas om teiken rotstipes uit te lig asook 'n aantal kontrole bandverhoudings om die integriteit van belangrike verhoudings te verseker. Hoofkomponente-ontleding komponente is ondersoek om die mees bruikbares te vind en dié was gekombineer in valse kleur samestellings. Transformasie resultate, deskundige kennis, en 'n geologiese kaart was geraadpleeg om opleidings- en verwysingsmonsters was verkry vanaf die beelde vir die klassifikasies. Al drie klassifikasies gebruik gemaak van dieselfde stel van die opleiding- en akkuraatheidsmonsters om sodoende betekenisvolle vergelykings te verseker. Transformasie resultate is belowend vir Landsat en ASTER beelde, terwyl SPOT 5 minder bruikbaar was. Die noue spektrale resolusie van SPOT 5 beperk die gebruik daarvan vir die identifisering van teiken gesteentetipes terwyl die hoë ruimtelike resolusie baie min bydra. Landsat het voordeel getrek uit goeie spektrale resolusie. Dit goeie resultate opgelwer met die klem op kalksteen en dolomiet, terwyl skalie aansienlik swakker resultate opgelewer het. Kwartsiet was 'n werklike probleem omdat die spektrale resolusie van Landsat nie breed genoeg was om hierdie kliptipe te onderskei nie. ASTER, met die hoogste spektrale resolusie, kon onderskei tussen al vier teiken rotstipes. Landsat en ASTER resultate was baie negatief beïnvloed in gebiede waar formasies relatief dun was (kleiner as sensor ruimtelike resolusie). Die klassifikasie resultate was soortgelyk aan die transformasies in dat beide Landsat en ASTER nuttige resultate opgelewer het, terwyl SPOT 5 misluk het. Akkuraatheids assessering het bepaal dat ASTER die beste gevaar het met 98,72%. Landsat het 'n akkuraatheid van 93,29% opgelewer, terwyl SPOT 5 80,17% akkuraat was. Landsat het die hoeveelheid kwartsiet heeltemal oorskat, terwyl al die resultate groot hoeveelhede Kwaternêre sedimente as skalie geklassifiseer het. Kalksteen is goed verteenwoordig in tot die armste resultate, terwyl resultate gewoonlik afgeneem het waar dolomiet in noue verband met kwartsiet was. Dit is moontlik asgevolg van silika se relatiewe sterk reaksies in die termiese infra-rooi spektrum wat kan lei tot die foutiewe klassifisering met dolomiet (wat ook sterk reageer in die TIR spektrum).
Tenedório, José António. "Télédetection en milieu périurbain. Détection et localisation du changement de l'occupation du sol par intégration des donnés-satellite SPOT HRV dans un système d'information géographique". Doctoral thesis, UNIVERSITÉ DE PARIS XII - VAL DE MARNE. INSTITUT D'URBANISME DE PARIS, 1998. http://hdl.handle.net/10362/4021.
Texto completo da fonteL'occupation et l'utilisation du sol dans les périphédes urbaines évoluent depuis toujours; bien entendu à des rythmes assez différents, dans espace et dans le temps, et avec une ampleur extrêmement variable. Cette évolution s'inscrit dans l'espace sous forme de tissus irréguliers, représentant souvent une ville spatialement fragmentée. À cet égard on peut parler d'une certame "élasticité" spatiale et temporelle de la ville. Cette évolution est, à un moment donné, Ia matérialisation visible sur le terrain de la complexe organisation de la dimension spatiotemporelle de l'espace périurbain. Tous les changements technologiques, économiques ou sociaux ont, au moins, une répercussion directe sur l'organisation spatiale; aussi bien les agents que les acteurs de production de l'espace sont les moteurs de la périurbanisation. La croissance périurbaine, le monocentrisme urbain, les problèmes des transports et de ('habitat, ainsi que ceux relatifs à la qualité de vie et de l'environnement, sont des thèmes qui actuellement défraient les chroniques quotidiennes des média. La réflexion et la construction de nouvelles méthodes, qui font appel à de nouvelles technologies pour observer Ia dynamique urbaine et périurbaine (notamment la Télédétection, les Systèmes d'Information Géographique, la Cartographie Numérique et les Séquences Vidéo) sont des supports indispensables à la maitrise des mutations physiques du territoire.
Cherpeau, Aline. "Télédétection et agroécologie : un essai de cartographie destinée à la gestion des milieux herbacés de haute montagne : application au Parc national des Ecrins". Grenoble 1, 1996. http://www.theses.fr/1996GRE10106.
Texto completo da fonteBerthier, Etienne. "Dynamique et bilan de masse des glaciers de montagne (Alpes, Islande, Himalaya) : contribution de l'imagerie satellitaire". Phd thesis, Université Paul Sabatier - Toulouse III, 2005. http://tel.archives-ouvertes.fr/tel-00011256.
Texto completo da fonteLes vitesses de surface des glaciers du Mont-Blanc montrent des fluctuations à court terme que nous relions à l'intensité de la fonte et à l'hydrologie sous-glaciaire. Sur le long terme, un ralentissement important (30 à 40%) suggère une réponse dynamique des glaciers aux changements climatiques.
Pour les glaciers alpins, les pertes de glace dans les zones basses s'accélèrent lors des dix dernières années alors qu'à haute altitude l'épaisseur glaciaire ne varie presque pas. Un fort amincissement à basse altitude est aussi observé en Islande et en Himalaya entre 1998-9 et 2004. Aussi, la fonte de ces glaciers expliquerait 5% de l'élévation récente
Guerfi, Mokhtar. "Application de la télédétection à l'analyse urbaine utilisation d'une image SPOT en multibande pour l'identification des tissus urbains de l'agglomération rouennaise". Rouen, 1988. http://www.theses.fr/1988ROUEL044.
Texto completo da fonteThe urban land use policies, impose a reasonned choice, whose require a descriptive data of the territory to planning. The remote sensing synoptic vision, enable to make e periodic, quantitative and qualitative inventory of land use; the question is to know, if the relation exists between urban object nautre properties and the measured inadiance. This relation was make conspiciously in homogeneous area, like agriculture, hydrology etc. . . The urban area exhibits an extremely heterogeneous surface cover, and it has not e direct relation between physic state of the object ans its urban fonction. Urban e image processing system whose is built on microcomputing an a software entirely developped on the same time of geographic analysis, we process to identify urban land cover for rouen, using the french Spot satellite multiban scene of december 5 1986. It appearead that the use of only one band is not available to analysis when land use, the combination of the three bands is best. The vegetation index give an interesting information. The Spot spatial resolution was nearly urban object height, a textural and structural study was made by using coocurence and isosegment matix. The best way of interpretation remain the visual analysis whose draws it inspiration from the technics of the photo-interpretation