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1مؤتمر
المؤلفون: Pajusco, Patrice, Pagani, Pascal
المساهمون: Département Micro-Ondes (MO), Université européenne de Bretagne - European University of Brittany (UEB)-Télécom Bretagne-Institut Mines-Télécom Paris (IMT), France Télécom Recherche et Développement (FTR&D), France Télécom
المصدر: Proceedings EuCAP 2007 : the second european conference on antennas and propagation ; EuCAP 2007 : the second european conference on antennas and propagation ; https://hal.science/hal-02316361Test ; EuCAP 2007 : the second european conference on antennas and propagation, Nov 2007, Edinburgh, United Kingdom
مصطلحات موضوعية: Ultra-wideband, radio wave propagation, channel characterization, frequency dependence, [SPI.TRON]Engineering Sciences [physics]/Electronics
جغرافية الموضوع: Edinburgh, United Kingdom
الوصف: International audience ; *
العلاقة: hal-02316361; https://hal.science/hal-02316361Test; https://hal.science/hal-02316361/documentTest; https://hal.science/hal-02316361/file/EuCAP2007_0866_paper.pdfTest
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2مؤتمر
المؤلفون: Pagani, Pascal, Pajusco, Patrice
المساهمون: France Télécom Recherche et Développement (FTR&D), France Télécom, Département Micro-Ondes (MO), Université européenne de Bretagne - European University of Brittany (UEB)-Télécom Bretagne-Institut Mines-Télécom Paris (IMT)
المصدر: Proceedings PIMRC 2004 : proceedings of the 15th IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications ; PIMRC 2004 : proceedings of the 15th IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications ; https://hal.science/hal-01912164Test ; PIMRC 2004 : proceedings of the 15th IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications, Sep 2004, Barcelone, Spain. pp.2973 - 2977
مصطلحات موضوعية: Electromagnetic wave propagation, Electromagnetic wave attenuation, Wide band signal, Fading channel, [SPI.TRON]Engineering Sciences [physics]/Electronics
جغرافية الموضوع: Spain
الوقت: Barcelone, Spain
الوصف: International audience ; Comprehensive modelling of the ultra-wide band (UWB) radio channel necessitates a good knowledge of its fading statistics. To evaluate the fluctuations of the UWB channel, a propagation experiment has been conducted in the 3.1 - 11 GHz frequency band, involving different antenna locations and moving people. The presented results emphasize the difference between the spatial and temporal channel variability, and provide a practical assessment of the UWB signal fading distribution in the case of a dynamic environment.
العلاقة: hal-01912164; https://hal.science/hal-01912164Test; https://hal.science/hal-01912164/documentTest; https://hal.science/hal-01912164/file/PRE-PRINT.pdfTest
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3مؤتمر
المساهمون: Laboratoire Électronique Ondes et Signaux pour les Transports (IFSTTAR/COSYS/LEOST), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-PRES Université Lille Nord de France, Département Micro-Ondes (MO), Université européenne de Bretagne - European University of Brittany (UEB)-Télécom Bretagne-Institut Mines-Télécom Paris (IMT), Lab-STICC_TB_MOM_PIM, Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (Lab-STICC), Université européenne de Bretagne - European University of Brittany (UEB)-École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom Paris (IMT)-Centre National de la Recherche Scientifique (CNRS)-Université européenne de Bretagne - European University of Brittany (UEB)-École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom Paris (IMT)-Centre National de la Recherche Scientifique (CNRS)
المصدر: 10th European Conference on Antennas and Propagation (EuCAP)
https://hal.science/hal-01355564Test
10th European Conference on Antennas and Propagation (EuCAP), Apr 2016, Davos, Switzerland. 4p, ⟨10.1109/EuCAP.2016.7481738⟩مصطلحات موضوعية: TLM BASED MODAL ALGORITHM, ARCHED TUNNEL, DEPOLARISATION EFFECTS, DIFFERENT CROSS SECTIONS, LOADED TUNNELS, METALLIC TUNNEL, MODAL NOMENCLATURE, MODAL WAVE PROPAGATION CHARACTERISTICS, NUMERICAL MODEL, TUNNEL, PROPAGATION DES ONDES, MODELE NUMERIQUE, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism
جغرافية الموضوع: Davos, Switzerland
الوصف: 10th European Conference on Antennas and Propagation (EuCAP), Davos, SUISSE, 10-/04/2016 - 15/04/2016 ; In this paper, we address the problem of the modelling and analysing wave propagation in realistic tunnel environments using a numerical model. A 2.5 D TLM based modal algorithm is developed and used to model several tunnel environments, namely an arched tunnel, a metallic tunnel and loaded tunnels with traffic. To analyse wave propagation in these context, a modal nomenclmature is proposed. Depolarisation effects have been demonstrated for arbitrary cross-sections. This effect, often observed during measurement campaigns has been shown with a numerical model.
العلاقة: hal-01355564; https://hal.science/hal-01355564Test
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4مؤتمر
المؤلفون: Lassudrie Duchesne, Patrick, Fleury, Rolland
المساهمون: Département Micro-Ondes (MO), Université européenne de Bretagne - European University of Brittany (UEB)-Télécom Bretagne-Institut Mines-Télécom Paris (IMT), Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (UMR 3192) (Lab-STICC), Université européenne de Bretagne - European University of Brittany (UEB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Institut Mines-Télécom Paris (IMT)-Centre National de la Recherche Scientifique (CNRS)
المصدر: Proceedings URSI General Assembly, session GP1/G02 ; URSI General Assembly, session GP1/G02 ; https://hal.science/hal-00954225Test ; URSI General Assembly, session GP1/G02, Oct 2005, New Delhi, India
مصطلحات موضوعية: GPS, Wave propagation, Ionospheric scintillation, Cycle slip, Scintillation index, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism
الوصف: International audience ; The present paper deals with the evaluation of phase scintillation indices (such as sf) from GPS receiver data. More specifically, the problem of cycle slip correction is addressed. Cycle slips are encountered if, by accident, a signal loss of lock occurs. Then, the receiver integer phase counter is reinitialised which causes a jump in the accumulated phase measurements [1]. Cycle slips usually have a deleterious effect on scintillation index evaluation as depicted in Fig. 1. Although algorithms for cycle slip correction exist, most are applicable only to differential GPS data [2], [3], [4], [5]. The present paper deals with the problem of cycle slip correction for dual-frequency stand-alone receivers [6]. Such configurations are encountered in particular when GPS receivers are used to monitor ionospheric activity on a regional or global scale [7]. An algorithm is proposed that corrects for cycle slips as small as a few wavelengths in range
العلاقة: hal-00954225; https://hal.science/hal-00954225Test
الإتاحة: https://hal.science/hal-00954225Test
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5دورية أكاديمية
المؤلفون: Lurton, Thibaut, Sintes, Christophe, Garello, René
المساهمون: Département Image et Traitement Information (ITI), Université européenne de Bretagne - European University of Brittany (UEB)-Télécom Bretagne-Institut Mines-Télécom Paris (IMT), Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (UMR 3192) (Lab-STICC), Université européenne de Bretagne - European University of Brittany (UEB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Institut Mines-Télécom Paris (IMT)-Centre National de la Recherche Scientifique (CNRS), Lab-STICC_TB_CID_TOMS, Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (Lab-STICC), Université européenne de Bretagne - European University of Brittany (UEB)-École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom Paris (IMT)-Centre National de la Recherche Scientifique (CNRS)-Université européenne de Bretagne - European University of Brittany (UEB)-École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom Paris (IMT)-Centre National de la Recherche Scientifique (CNRS)
المصدر: ISSN: 0364-9059 ; IEEE Journal of Oceanic Engineering ; https://hal.science/hal-00515352Test ; IEEE Journal of Oceanic Engineering, 2009, XLIV (3), pp.16 - 22.
مصطلحات موضوعية: TLM, Electromagnetic wave propagation, Marine radar, Oceanographic techniques, Ray tracing, Remote sensing by radar, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing
الوصف: International audience ; We propose the simulated rendition of the observation of a variety of small sea patches by radar. These patches include a random sea surface of variable state, with possibly the presence of a manufactured, metallic object in its middle. The simulation in itself draws upon two different techniques which are combined: for the free-space propagation, a simple geometrical ray tracing method is used. On the other hand, we rely on a discrete calculation of the propagation of the electromagnetic waves in the vicinity of the sea surface, using the TLM method. Different aspects of this particular electromagnetic method are discussed in this paper. The originality of the approach is the combination of a geometrical calculation with a discrete, exact computation, each of them being devoted to a precise part of the simulation. Further matter in the article extends onto the explanation of some techniques developed for the need of our study, presentation and annotation of some results along with computation times, and overall discussion.
العلاقة: hal-00515352; https://hal.science/hal-00515352Test
الإتاحة: https://hal.science/hal-00515352Test
