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Optical Ground Network Diversity Analysis for Free Space Optical Communications
Bouchra Benammar;Louis Pericart;Géraldine Artaud;Frédéric Lacoste
2019 IEEE International Conference on Space Optical Systems and Applications (ICSOS)
Year: 2019 | Conference Paper |
Cited by: Papers (1)
Free Space Optical (FSO) Communications are foreseen as key enabler technology for future Terabits/s feederlink fixed satellite services. However, earth-space optical links suffer from several atmospheric impairments such as cloud blockage, aerosols scattering, molecular absorption and turbulence. More specifically, cloud blockage has a major impact on the availability of optical links. In order t...Show More
Mobile satellite propagation channels for Ku and Ka band
2016 10th European Conference on Antennas and Propagation (EuCAP)
Year: 2016 | Conference Paper |
Cited by: Papers (5)
The design and assessment of air interfaces for modern Land Mobile satellite systems between 1 and 20 GHz require the use of reference generative propagation channel models. Among possible generative modeling approaches, the empirical stochastic method has been widely used in the past two decades for its simplicity, reduced number of input parameters and efficiency in terms of computation time. Re...Show More
Trans-ionospheric propagation experiment at HF-band: Channel measurement and modelling
Frederic Lacoste;Vincent Fabbro;Joel Lemorton;Guillaume Decerprit;Rolland Fleury;Pascal Pagani;Francoise Carvalho;Sébastien Rougerie
2015 9th European Conference on Antennas and Propagation (EuCAP)
Year: 2015 | Conference Paper |
The HFPE technological experiment aims at consolidating a new concept of long range transmissions between ground and the Low Earth Orbit. This concept relies on over-the-horizon transionospheric links in the HF-band. To prepare this experiment, propagation modelling and measurements have been carried out. In particular, a HF link planning software, MSATIS, has been tested with respect to experimen...Show More
Mobile and nomadic measurements of the LMS propagation channel at Ku and Ka bands
Joël Lemorton;Xavier Boulanger;Mehdi Ait Ighil;Fernando Pérez-Fontán;Sebastien Rougerie;Frédéric Lacoste
2015 9th European Conference on Antennas and Propagation (EuCAP)
Year: 2015 | Conference Paper |
The purpose of the paper is to present a series of measurements of the mobile and nomadic satellite propagation channels in Ku and Ka bands, covering mainly the environments encountered by vehicles of public transportation. The first campaign “without leaves” conducted in April 2014 provided a good dataset of Ku and Ka-band attenuation caused by four different kinds of trees. Mobile Ku-band measur...Show More
A propagation model for trees based on multiple scattering theory
Jonathan Israel;Frederic Lacoste;Henri-José Mametsa;Fernando P. Fontan
The 8th European Conference on Antennas and Propagation (EuCAP 2014)
Year: 2014 | Conference Paper |
Cited by: Papers (7)
Based on the multiple scattering theory, we derive a point scattering propagation model which allows an efficient computation of the diffuse component of the electromagnetic field scattered by a vegetation canopy. We show that our mode is in good agreement both with the original multiple scattering predictions and with measurements.Show More
SISO and MIMO enhanced 2-state modelling of the Land Mobile satellite channel for various frequencies, environments and elevation angles
Frédéric Lacoste;Belen Montenegro Villacieros;Roberto Prieto-Cerdeira;Joël Lemorton
The 8th European Conference on Antennas and Propagation (EuCAP 2014)
Year: 2014 | Conference Paper |
Cited by: Papers (2)
The design and assessment of air interfaces for modern Land Mobile satellite systems between 1 and 4 GHz require the use of reference generative propagation channel models. Among possible generative modeling approaches, the empirical stochastic method has been widely used in the past two decades for its simplicity, reduced number of input parameters and efficiency in terms of computation time. A m...Show More
SISO, MIMO and SIMO characterisation of the Land Mobile and Nomadic Satellite propagation channels
Frédéric Lacoste;Joël Lemorton;Laurent Casadebaig;Mehdi Ait-Ighil;Belen Montenegro Villacieros;Guillaume Carrié;Franck Rousseau
2013 7th European Conference on Antennas and Propagation (EuCAP)
Year: 2013 | Conference Paper |
Cited by: Papers (4)
This paper presents the configuration and sample results of two experiments carried out by ONERA and CNES. These measurements were performed at 2.2 and 3.8 GHz with SISO, MIMO and SIMO antennas configurations. A first experiment includes multi-elevation characterization of the Land Mobile Satellite Channel. The second one includes both Land Mobile and Nomadic configurations.Show More
SCHUN - A hybrid land mobile satellite channel simulator enhanced for multipath modelling applied to satellite navigation systems
M. Ait-Ighil;J. Lemorton;F. Pérez-Fontán;F. Lacoste;P. Thevenon;C. Bourga;M. Bousquet
2013 7th European Conference on Antennas and Propagation (EuCAP)
Year: 2013 | Conference Paper |
Cited by: Papers (2)
This paper deals with land mobile satellite channel modelling and addresses the specific issue of channel impairments in urban environments for mobile applications with a particular focus on multipath modelling and wideband representation of the channel. This paper introduces a new land mobile satellite channel simulator, SCHUN (Simplified CHannel for Urban Navigation), based on a hybrid physical-...Show More
A Rain Attenuation Time-Series Synthesizer Based on a Dirac and Lognormal Distribution
Xavier Boulanger;Laurent Feral;Laurent Castanet;Nicolas Jeannin;Guillaume Carrie;Frederic Lacoste
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 experimental rain attenuation time series collected at mid-latitudes only. In the present paper, an effort is conducted to derive analytically the first...Show More
A generative MIMO channel model: Encompassing single satellite and satellite diversity cases
2012 6th European Conference on Antennas and Propagation (EUCAP)
Year: 2012 | Conference Paper |
Cited by: Papers (3)
This paper addresses the statistical modeling of MIMO-LMS fading channels. In the absence of accurate experimental results, a statistical model for the characterization of MIMO-LMS channels is proposed based on consolidation of available experimental results for SISO-LMS, SIMO-LMS and MISO-LMS as well as on their extrapolation to the MIMO-LMS and satellite diversity cases of interest.Show More
A three components model for simplified building scattering in urban environment
M. Ait-Ighil;F. Pérez-Fontán;J. Lemorton;F. Lacoste;G. Artaud;C. Bourga;M. Bousquet
2012 6th European Conference on Antennas and Propagation (EUCAP)
Year: 2012 | Conference Paper |
Cited by: Papers (1)
Multipath represents a common predominant and uncontrolled component on channel impairments for land mobile satellite communication and navigation systems. Delayed signal replicas highly impact performances on communication systems while they induce strong positioning errors for navigation systems. The actual trend is to improve multipath wideband representation by using hybrid physical-statistica...Show More
Statistical risk associated with tropospheric propagation models and measurements
2012 6th European Conference on Antennas and Propagation (EUCAP)
Year: 2012 | Conference Paper |
Cited by: Papers (1)
This paper aims at providing an explanation for part of the inter annual variability observed on the statistics of attenuation computed from earth-space propagation measurements. The high variability observed for the low percentages of time is shown to be related to the variance of the statistical estimator used to compute empirical complementary cumulative distribution function. The knowledge of ...Show More
Measurements of the land mobile and nomadic satellite channels at 2.2 GHz and 3.8 GHz
2012 6th European Conference on Antennas and Propagation (EUCAP)
Year: 2012 | Conference Paper |
Cited by: Papers (9)
This paper presents the configuration and preliminary results of an experiment carried out by ONERA and CNES. These measurements address both land mobile and nomadic satellite channels at 2.2 and 3.8 GHz. In particular, they include dual circular polarization MIMO and SIMO measurements.Show More
Land Mobile Satellite Dual Polarized MIMO Channel Along Roadside Trees: Modeling and Performance Evaluation
Michael Cheffena;Fernando Pérez Fontan;Frédéric Lacoste;Erwan Corbel;Henri-Jose Mametsa;Guillaume Carrie
We present a novel physical-statistical, generative model for the land mobile satellite (LMS), dual polarized, multiple-input-multiple-output (MIMO) channel along tree-sided roads. Said model is parameterized by means of a physical model based on the multiple scattering theory (MST) which accounts for the signal attenuation and scattering by trees. Moreover, finite-difference time-domain (FDTD) el...Show More
Study and test of a new stochastic rain attenuation time series synthesizer based on a mixed law for tropical and equatorial areas
X. Boulanger;L. Castanet;N. Jeannin;L. Feral;F. Carvalho;F. Lacoste;M. E. C. Rodrigues;L. A. R. Silva Mello;M. S. Pontes
Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP)
Year: 2011 | Conference Paper |
The development of Fade Mitigation Techniques [1] real-time algorithms requires a good knowledge of propagation impairment dynamics. To test and adjust FMT control loops, propagation time series are needed. Nevertheless, as only few data have been collected so far in tropical and equatorial areas at Ku-band (almost no data are available at higher frequencies [2]), an alternative to using real data...Show More
Land mobile satellite dual polarized MIMO channel along roadside trees: Modeling and performance evaluation
Michael Cheffena;Fernando Pérez-Fontán;Frederic Lacoste;Erwan Corbel;Henri-Jose Mametsa
Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP)
Year: 2011 | Conference Paper |
Cited by: Papers (1)
In this paper, we present a novel physical-statistical, generative model for the land mobile satellite (LMS), dual polarized, multiple-input-multiple-output (MIMO) channel along tree sided roads. Said model is parameterized by means of a physical model based on the Multiple Scattering Theory (MST) which accounts for the signal attenuation and scattering by trees. Moreover, Finite-Difference Time-D...Show More
Numerical analysis of the impact of building face features on LMS channel modelling
M. Ait-Ighil;J. Lemorton;F. Pérez-Fontán;F. Lacoste;V. Gobin;G. Artaud;C. Bourga;M. Bousquet
Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP)
Year: 2011 | Conference Paper |
Propagation channel models have become an essential issue when designing and optimising satellite communications or navigation systems. As far as the LMS (Land Mobile Satellite) propagation channel is concerned, many techniques have been developed to reproduce the spatial and temporal properties of the received signals. Physical-statistical methods are one of the most efficient and relevant approa...Show More
FSO ground network optimization and analysis considering the influence of clouds
F. Lacoste;A. Guérin;A. Laurens;G. Azema;C. Periard;D. Grimal
Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP)
Year: 2011 | Conference Paper |
Cited by: Papers (5)
This document presents a two step analysis aiming at determining an optimised network of ground stations suitable for FSO satellite downlink communications. The optimisation is performed with respect to cloudiness for which experimental datasets are available. Daily visibility times or equivalently link capacities enabled by FSO are compared with X-band ones considering realistic GMES orbits. Both...Show More
Physical-statistical model for the LMS channel at Ku/Ka band
Nicolas Jeannin;Fernando Perez-Fontan;Henri-José Mametsa;Laurent Castanet;Frédéric Lacoste
Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP)
Year: 2011 | Conference Paper |
This paper presents a physical statistical model to simulate the Ku/Ka band LMS channel. It describes the effect of individual obstacles on the channel and the methodology to simulate flexible environment relying on different 3D databases. A particular emphasis is put on the singularity induced by the use of high frequency band. The validation with regards to existing data and tools is also consid...Show More
Use of space-time channel models and data for design and control of adaptive SatCom systems
Carlo Capsoni;Laurent Castanet;Piero Gabellini;Gennaro Gallinaro;Frederic Lacoste;Nicolas Jeannin;Lorenzo Luini;Antonio Martellucci;Aldo Paraboni
Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP)
Year: 2011 | Conference Paper |
Cited by: Papers (2)
Propagation Impairments Mitigation Techniques (PIMTs) are necessary for satellite-based systems (typically operating at frequencies above 20 GHz) intended to provide large bandwidth to the end users. This contribution presents the best performing space-time channel model to be used in the design and control of adaptive SatCom systems. First, models able to predict the spatial distribution of the r...Show More
Review of prediction methods for low-elevation aerospace systems and new achievements
Joël Lemorton;Vincent Fabbro;Charilaos Kourogiorgas;Pierre Bouchard;Dave Rogers;Lorenzo Luini;Carlo Riva;Danielle Vanhoenacker-Janvier;Frédéric Lacoste;Lars Bråten;Laurent Castanet
Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP)
Year: 2011 | Conference Paper |
Unmanned Airborne Vehicles (UAV) datalinks are among the most critical technologies in a large number of future UAV applications. The main characteristics of Line Of Sight (LOS) datalinks for UAV are medium and long range paths, and low elevation angle, whereas the frequency may range from VHF and UHF up to Ku and Ka bands. As far as available statistical prediction models are concerned, there is ...Show More
Statistical and physical-statistical modeling of the land mobile satellite, LMS, channel at Ku- and Ka-band
F. Pérez-Fontán;N. Jeannin;L. Castanet;H.J. Mametsa;F. Lacoste;V. Hovinen;M. Schönhuber;F. Teschl;R. Prieto-Cerdeira
Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP)
Year: 2011 | Conference Paper |
Cited by: Papers (1)
In this paper, results from two studies, one for ESA, the European Space Agency, awarded to a contortion led by Joanneum Research (A), and the other for CNES, the French National Space Studies Center, awarded to ONERA (F), are presented. These studies had the task of evaluating the characteristics of both the narrowband and wideband channels at Ku- and Ka-Band so that the feasibility of setting up...Show More
MISO and SIMO measurements of the Land Mobile Satellite propagation channel at S-band
Frédéric Lacoste;Françoise Carvalho;Fernando Perez Fontan;Adolfo. Nunez Fernandez;Vincent Fabbro;Gaël Scot
Proceedings of the Fourth European Conference on Antennas and Propagation
Year: 2010 | Conference Paper |
Cited by: Papers (2)
This paper presents experimental propagation results inferred from Multiple-Inputs-Single-Output (MISO) and Single-Input-Multiple-Outputs (SIMO) Land Mobile Satellite measurements carried out at 2.2 GHz. In particular, statistical combining gains provided by spatial and polarization diversity techniques are analysed depending on the environment.Show More
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