Výsledky vyhledávání - "Laurent, Feral"

Rain Attenuation Estimation with the Numerical Weather Prediction Model WRF: Impact of Rain Drop Size Distribution for a Temperate Climate

Autor: L. Castanet, Valentin Le Mire, Julien Queyrel, Laurent Quibus, Laurent Feral

Publikováno v: EUCAP 2021
EUCAP 2021, Sep 2021, Dusseldorf, Germany

International audience; Frequencies at and above K/Ka band are required for the deployment of (very) high throughput satellites. Yet, radio-links at those frequencies are strongly affected by tropospheric constituents, especially rain. The knowledge

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48508efe06f419e596e870dbb46249ae
https://doi.org/10.23919/eucap51087.2021.9410927

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Potentialities of the Numerical Weather Prediction model WRF to produce attenuation statistics in tropical regions

Autor: Laurent Feral, Bouchra Benammar, L. Castanet, Xavier Boulanger, Valentin Le Mire

Publikováno v: 2020 14th European Conference on Antennas and Propagation (EuCAP)
EUCAP 2020
EUCAP 2020, Mar 2020, COPENHAGUE, Denmark. ⟨10.23919/EuCAP48036.2020.9135414⟩

International audience; This paper presents the use of a Numerical Weather Prediction model (the WRF US model from NCAR/NCEP) coupled with an electromagnetic module to create rain attenuation time series and statistical results in a tropical region.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99586593391a5e6af1f5784296eb1d87
https://hal.archives-ouvertes.fr/hal-02907072/document

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Use of WRF to generate site diversity statistics in south of France

Autor: Xavier Boulanger, Nicolas Jeannin, L. Castanet, Laurent Feral, Gaetan Fayon

Publikováno v: 2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS).

This paper proposes the use of a Numerical Weather Prediction (NWP) model to emulate site diversity statistics. Particularly, the Weather Research and Forecasting (WRF) model coupled with an Electromagnetic Module (EMM) is used here to generate rain

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::34280f103d8af7818a5d213074045a16
https://doi.org/10.23919/ursigass.2017.8105206

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Validity of 2D electromagnetic approaches to estimate log-amplitude and phase variances due to 3D ionospheric irregularities

Autor: Vincent Fabbro, Laurent Feral, Hélène Galiègue

Publikováno v: Journal of Geophysical Research Space Physics
Journal of Geophysical Research Space Physics, American Geophysical Union/Wiley, 2016, ⟨10.1002/2016JA023233⟩

International audience; To limit the computation time and the computer resource, 2D numerical approaches such as 2D Parabolic Wave Equation (2D-PWE) associated with 1D Multiple Phase Screens (1D-MPS) are classically used to estimate ionospheric scint

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e56698609c571f22156dd7fddb2c83a4
https://hal-enac.archives-ouvertes.fr/hal-01417193

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A Rain Attenuation Time-Series Synthesizer Based on a Dirac and Lognormal Distribution

Autor: G. Carrie, Xavier Boulanger, L. Castanet, Frederic Lacoste, Nicolas Jeannin, Laurent Feral

Publikováno v: IEEE Transactions on Antennas and Propagation. 61:1396-1406

In Recommendation ITU-R P.1853-1, a stochastic approach is proposed to generate long-term rain attenuation time series , including rain and no rain periods anywhere in the world. Nevertheless, its dynamic properties have been validated so far from ex

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8a813a1e2ce7893202ae2bf307b00640
https://doi.org/10.1109/tap.2012.2230237

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Conference

Use of the HYCELL model for predicting rain attenuation on UAS low elevation datalinks.

Autor: Charilaos, Kourogiorgas, Laurent, Feral, Vincent, Fabbro, Nicolas, Jeannin, Joel, Lemorton

Publikováno v: 2010 Proceedings of the Fourth European Conference on Antennas & Propagation (EuCAP); 2010, p1-5, 5p

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Statistical Modeling of Multi-Site Diversity for Frequencies between 20 & 50 GHz

Autor: Fayon, Gaëtan

Publikováno v: Electromagnétisme. UNIVERSITE TOULOUSE 3 PAUL SABATIER (UT3 PAUL SABATIER), 2017. Français

Due to the congestion of standard frequency bands (S, C, Ku bands) and the need to offer higher data rates for multimedia services, space communication systems require to be operated at carrier frequencies higher than 20 GHz: Ka-band (20-30 GHz) for

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::1a1f1429212fb9a408e795489a3bd428
https://hal.archives-ouvertes.fr/tel-01702803/file/DEMR17096.1512052043.pdf

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Modélisation des effets des scintillations ionosphériques sur la propagation des ondes électromagnétiques en bande L aux latitudes polaires

Autor: Galiègue, Hélène

Publikováno v: Electromagnétisme. UNIVERSITE TOULOUSE 3 PAUL SABATIER, 2015. Français

The ionospheric plasma is located at the border between neutral atmosphere and outer space and many complex ionization reactions occur inside this turbulent medium. The Earth magnetic field and induced electric fields cause rapid fluctuations of elec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2592::affc28c9e20202997c606a39bc80fb0b
https://hal.archives-ouvertes.fr/tel-01203660/file/DEMR15068.1442386869.pdf

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Modelling of ionospheric scintillation effects on L-band signals propagation at polar latitudes

Autor: Galiègue, Hélène

Publikováno v: Electromagnétisme. UNIVERSITE TOULOUSE 3 PAUL SABATIER, 2015. Français

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::affc28c9e20202997c606a39bc80fb0b
https://hal.archives-ouvertes.fr/tel-01203660

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