Academic literature on the topic 'Radar à synthèse d'ouverture (SAR)'
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Journal articles on the topic "Radar à synthèse d'ouverture (SAR)"
Nicolas, Jean-Marie, and Florence Tupin. "Quarante années d'imagerie satellitaire radar." Revue Française de Photogrammétrie et de Télédétection, no. 219-220 (December 10, 2019): 7–17. http://dx.doi.org/10.52638/rfpt.2019.453.
Full textSimms, Élizabeth L. "Détection de Milieux Bâtis à l'Aide d'Images Radar à Synthèse d'Ouverture." Canadian Journal of Remote Sensing 43, no. 2 (January 31, 2017): 168–76. http://dx.doi.org/10.1080/07038992.2017.1288507.
Full textBernier, M., J. P. Fortin, Y. Gauthier, R. Gauthier, J. L. Bisson, and P. Vincent. "Estimation de l'équivalent en eau du couvert nival au moyen d'images radar satellitaires." Revue des sciences de l'eau 12, no. 2 (April 12, 2005): 407–23. http://dx.doi.org/10.7202/705358ar.
Full textNICOLAS, Jean Marie, and Florence Tupin. "Quarante années d'imagerie satellitaire radar." Revue Française de Photogrammétrie et de Télédétection, no. 219-220 (November 10, 2020). http://dx.doi.org/10.52638/rfpt.2019.401.
Full textFERRO-FAMIL, Laurent. "Principes de l'imagerie Radar à synthèse d'ouverture (RSO)." Le traitement du signal et ses applications, August 2013. http://dx.doi.org/10.51257/a-v1-te6702.
Full textGLAUDE, Quentin, and Anne ORBAN. "Missions actuelles en télédétection par radar à synthèse d’ouverture, et applications." Bulletin de la Société Géographique de Liège, 2022. http://dx.doi.org/10.25518/0770-7576.6626.
Full textDissertations / Theses on the topic "Radar à synthèse d'ouverture (SAR)"
El, Zaart Ali. "Statistical inference and distribution selection for SAR image analysis : a mixture-based approach." Thèse, Sherbrooke : Université de Sherbrooke, 2001. http://savoirs.usherbrooke.ca/handle/11143/5001.
Full textTria, Mohamed. "Imagerie Radar à Synthèse d'Ouverture (RSO) Par Analyse En Ondelettes Continues Multidimensionnelles." Phd thesis, Paris 11, 2005. https://tel.archives-ouvertes.fr/tel-00011181.
Full textThe thesis work was about the " Synthetic Aperture Radar (SAR) imaging by using the multidimensional continuous wavelet analysis ". This work consisted in establishing time-frequency methods in the SAR domain. The principle of the SAR imaging consists in irradiating a ground zone with electromagnetic waves emitted by the radar antenna. This zone contains several reflectors belonging to one or several targets. While the airborne is moving on its flight path, the antenna emits periodically impulses which reach the whole targets located on the irradiated zone. A non-negligible part of each impulse is reflected by the target and received by the radar. The whole collected data will be used to form a high resolution image of the illuminated zone thanks to an algorithm of image reconstruction. The classical imaging methods assume that the reflectors are isotropic (they behaves the same way regardless the aspect under wich they are viewed) and white (they have the same properties within the emitted bandwidth). Unfortunately, new capacities in SAR imaging (large bandwidth, large angular excursions of analysis) makes these assumptions obsolete. The purpose of the thesis work consisted in developing a time-frequency method based on the use of continuous wavelets allowing to highlight the anisotropic and coloration effects of the irradiated points. This kind of analysis is based on the concept of hyperimage which allows to associate to each pixel an energetic response which is a function of the aspect and the frequency. The algorithm allowing to implant the continuous wavelet transform is based on the Fourier transform. Hence, this algorithm is not expensive in terms of time calculation by using the Fast Fourier Transform (FFT). .
Lê, Thu Trang. "Extraction d'informations de changement à partir des séries temporelles d'images radar à synthèse d'ouverture." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAA020/document.
Full textA large number of successfully launched and operated Synthetic Aperture Radar (SAR) satellites has regularly provided multitemporal SAR and polarimetric SAR (PolSAR) images with high and very high spatial resolution over immense areas of the Earth surface. SAR system is appropriate for monitoring tasks thanks to the advantage of operating in all-time and all-weather conditions. With multitemporal data, both spatial and temporal information can simultaneously be exploited to improve the results of researche works. Change detection of specific features within a certain time interval has to deal with a complex processing of SAR data and the so-called speckle which affects the backscattered signal as multiplicative noise.The aim of this thesis is to provide a methodology for simplifying the analysis of multitemporal SAR data. Such methodology can benefit from the advantages of repetitive SAR acquisitions and be able to process different kinds of SAR data (i.e. single, multipolarization SAR, etc.) for various applications. In this thesis, we first propose a general framework based on a spatio-temporal information matrix called emph{Change Detection Matrix} (CDM). This matrix contains temporal neighborhoods which are adaptive to changed and unchanged areas thanks to similarity cross tests. Then, the proposed method is used to perform three different tasks:1) multitemporal change detection with different kinds of changes, which allows the combination of multitemporal pair-wise change maps to improve the performance of change detection result;2) analysis of change dynamics in the observed area, which allows the investigation of temporal evolution of objects of interest;3) nonlocal temporal mean filtering of SAR/PolSAR image time series, which allows us to avoid smoothing change information in the time series during the filtering process.In order to illustrate the relevancy of the proposed method, the experimental works of the thesis is performed on four datasets over two test-sites: Chamonix Mont-Blanc, France and Merapi volcano, Indonesia, with different types of changes (i.e., seasonal evolution, glaciers, volcanic eruption, etc.). Observations of these test-sites are performed on four SAR images time series from single polarization to full polarization, from medium to high, very high spatial resolution: Sentinel-1, ALOS-PALSAR, RADARSAT-2 and TerraSAR-X time series
Moureaux, Jean-Marie. "Quantification vectorielle algebrique pour la compression d'images. Application a l'imagerie radar a synthese d'ouverture (sar)." Nice, 1994. http://www.theses.fr/1994NICE4799.
Full textQuin, Guillaume. "Etude des séries temporelles en imagerie satellitaire SAR pour la détection automatique de changements." Thesis, Paris, ENST, 2014. http://www.theses.fr/2014ENST0003/document.
Full textThis PhD thesis presents the MIMOSA (Method for generalIzed Means Ordered Series Analysis) change detection methood. This new technique can automatically detect changes between SAR image pairs or within time series. Indeed, thanks to the temporeal means, the number of involved images doesn’t matters because only two different means are compared to detect the changes (for example, the geometric and quadratic means). Thus, large data volumes can be processed easily, since the useful information is condensed within the temporal means. The only change detection parameter is the false alarm rate that will be MIMOSA method are very good compared to other methods. Several tests have been performed in order to quantify the robustness of the method facing the most common problems, like image misregistration or radiometric calibration errors. A graphical user interface has also been developed for MIMOSA, including many useful tools to prepare and process SAR data, but also several analyse tools
Taylor, Abigael. "Traitements SAR multivoies pour la détection de cibles mobiles." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLN048/document.
Full textAirborne Synthetic Aperture Radar (SAR) provides high-resolution images, by compensating a phase shift linked to the platform movement. However, this processing is not suited for imaging moving target, for they introduce an additional phase shift, depending on their velocity and acceleration. By using a multichannel SAR system, it is possible to correctly process moving targets. Such a processing is closely related to Space-Time Adaptive Processing (STAP) principles. Airborne Synthetic Aperture Radar (SAR) provides high-resolution images, by compensating a phase shift linked to the platform movement. However, this processing is not suited for imaging moving target, for they introduce an additional phase shift, depending on their velocity and acceleration. By using a multichannel SAR system, it is possible to correctly process moving targets. Such a processing is closely related to Space-Time Adaptive Processing (STAP) principles
Quin, Guillaume. "Etude des séries temporelles en imagerie satellitaire SAR pour la détection automatique de changements." Electronic Thesis or Diss., Paris, ENST, 2014. http://www.theses.fr/2014ENST0003.
Full textThis PhD thesis presents the MIMOSA (Method for generalIzed Means Ordered Series Analysis) change detection methood. This new technique can automatically detect changes between SAR image pairs or within time series. Indeed, thanks to the temporeal means, the number of involved images doesn’t matters because only two different means are compared to detect the changes (for example, the geometric and quadratic means). Thus, large data volumes can be processed easily, since the useful information is condensed within the temporal means. The only change detection parameter is the false alarm rate that will be MIMOSA method are very good compared to other methods. Several tests have been performed in order to quantify the robustness of the method facing the most common problems, like image misregistration or radiometric calibration errors. A graphical user interface has also been developed for MIMOSA, including many useful tools to prepare and process SAR data, but also several analyse tools
Zhao, Weiying. "Multitemporal SAR images denoising and change detection : applications to Sentinel-1 data." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLT003/document.
Full textThe inherent speckle which is attached to any coherent imaging system affects the analysis and interpretation of synthetic aperture radar (SAR) images. To take advantage of well-registered multi-temporal SAR images, we improve the adaptive nonlocal temporal filter with state-of-the-art adaptive denoising methods and propose a patch based adaptive temporal filter. To address the bias problem of the denoising results, we propose a fast and efficient multitemporal despeckling method. The key idea of the proposed approach is the use of the ratio image, provided by the ratio between an image and the temporal mean of the stack. This ratio image is easier to denoise than a single image thanks to its improved stationarity. Besides, temporally stable thin structures are well-preserved thanks to the multi-temporal mean. Without reference image, we propose to use a patch-based auto-covariance residual evaluation method to examine the residual image and look for possible remaining structural contents. With speckle reduction images, we propose to use simplified generalized likelihood ratio method to detect the change area, change magnitude and change times in long series of well-registered images. Based on spectral clustering, we apply the simplified generalized likelihood ratio to detect the time series change types. Then, jet colormap and HSV colorization may be used to vividly visualize the detection results. These methods have been successfully applied to monitor farmland area, urban area, harbor region, and flooding area changes
Allain, Sophie. "Caractérisation d'un sol nu à partir de données SAR polarimétriques. Etude multi-fréquentielle et multi-résolutions." Phd thesis, Université Rennes 1, 2003. http://tel.archives-ouvertes.fr/tel-00012010.
Full textDes relations quantitatives entre la rugosité et l'humidité du sol et des descripteurs polarimétriques sont déterminées au moyen d'un modèle de diffusion utilisant la méthode de l'équation intégrale. Deux algorithmes d'inversion multi-fréquentiels sont développés pour l'extraction des paramètres physiques d'une surface et sont appliqués sur des mesures SAR polarimétriques acquises au laboratoire européen JRC.
La réponse électromagnétique d'une surface rugueuse dépend aussi de la taille de la cellule de résolution radar. La relation entre la résolution SAR et les caractéristiques polarimétriques d'une surface est établie en partageant son spectre en deux composantes. Un nouveau modèle de diffusion prenant en compte la résolution est ainsi présenté et validé sur des données multi-résolutions polarimétriques.
Çakir, Ziyadin. "Analyse des déformations de surface associées aux séismes d'Izmit et de Dücze de 1999 (Turquie) en utilisant l'interférométrie radar à synthèse d'ouverture (InSAR)." Paris, Institut de physique du globe, 2003. http://www.theses.fr/2003GLOB0002.
Full textBooks on the topic "Radar à synthèse d'ouverture (SAR)"
Inverse synthetic aperture radar imaging: Principles, algorithms, and applications. Edison, NJ: Scitech Publishing, an imprint of the IET, 2014.
Find full textRadar techniques using array antennas. 2nd ed. Stevenage, Herts, United Kingdom: The Institution of Engineering and Technology, 2013.
Find full textEngineers, Institution of Electrical, and Knovel (Firm), eds. Radar techniques using array antennas. London: Institution of Electrical Engineers, 2001.
Find full textLi, Xiaofeng, Xiaofeng Yang, Huadong Guo, and Kun-Shan Chen. Advances in SAR Remote Sensing of Oceans. Taylor & Francis Group, 2018.
Find full textLi, Xiaofeng, Xiaofeng Yang, Huadong Guo, and Kun-Shan Chen. Advances in SAR Remote Sensing of Oceans. Taylor & Francis Group, 2018.
Find full textAdvances in SAR Remote Sensing of Oceans. CRC Press, 2018.
Find full textLi, Xiaofeng, Xiaofeng Yang, Huadong Guo, and Kun-Shan Chen. Advances in SAR Remote Sensing of Oceans. Taylor & Francis Group, 2018.
Find full textBerizzi, Fabrizio, Marco Martorella, and Elisa Giusti. Radar Imaging for Maritime Observation. Taylor & Francis Group, 2018.
Find full textBerizzi, Fabrizio, Marco Martorella, and Elisa Giusti. Radar Imaging for Maritime Observation. Taylor & Francis Group, 2018.
Find full textBerizzi, Fabrizio, Marco Martorella, and Elisa Giusti. Radar Imaging for Maritime Observation. Taylor & Francis Group, 2018.
Find full textBook chapters on the topic "Radar à synthèse d'ouverture (SAR)"
CONRADSEN, Knut, Henning SKRIVER, Morton J. CANTY, and Allan A. NIELSEN. "Détection de séries de changements dans des séries d’images SAR polarimétriques." In Détection de changements et analyse des séries temporelles d’images 1, 41–81. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9056.ch2.
Full textReports on the topic "Radar à synthèse d'ouverture (SAR)"
Dudley, J. P., and S. V. Samsonov. Système de traitement automatisé du gouvernement canadien pour la détection des variations et l'analyse des déformations du sol à partir des données de radar à synthèse d'ouverture de RADARSAT-2 et de la mission de la Constellation RADARSAT : description et guide de l'utilisateur. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/329134.
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