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On site validation in GNSS stations for multipath and interference mitigation structure (IMLP)
A. Dessantis;L. Dicecca;L. D'Agristina;V. Crino;P. Gabellini;P. Russo;F. A. Fernandez;Antonio Castro;Alfredo Quiles;Ruediger Weiler
2014 7th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC)
Year: 2014 | Conference Paper |
Cited by: Papers (5)
The mitigation of Interference and Multipath is of paramount importance for the GNSS reference stations since they potentially introduce significant errors on the measurements provided by these stations. The solution that has been used up to now in order to reduce the effect of multipath consists of using a small choke-ring ground plane, but unfortunately this solution results to be effective only...Show More
Single-Objective Genetic Algorithm for dynamic optimization of reconfigurable antenna systems
Laura Resteghini;Pier Luca Lanzi;Roberto Nebuloni;Carlo Riva;Carlo Capsoni;Piero Gabellini
2013 7th European Conference on Antennas and Propagation (EuCAP)
Year: 2013 | Conference Paper |
Cited by: Papers (1)
Modern satellite telecommunications are moving toward the use of large capacity systems exploiting fade mitigation techniques such as reconfigurable on-board antenna systems to face channel attenuation. In this work we propose a new Single-Objective Genetic Algorithm (SOGA) able to optimize the spatial distribution of the radiated power, taking into account the effect of non-ideal antenna componen...Show More
Effect of non-ideal components on the performance of a reconfigurable on-board antenna for broadcasting applications
Laura Resteghini;Carlo Capsoni;Roberto Nebuloni;Piero Gabellini;Fabio Maggio;Antonio Martellucci;Peter Rinous
2012 6th European Conference on Antennas and Propagation (EUCAP)
Year: 2012 | Conference Paper |
Cited by: Papers (5)
The extensive use of propagation impairment mitigation techniques for Telecommunication satellite systems working at Ka and Q/V bands represents an important countermeasure to prevent the broadcasted signals from strong degradation effects. In particular the use of an adaptive on board antenna for Broadcasting System Service, as reported in previous studies [1], appears as one of the most promisin...Show More
An on-board reconfigurable antenna system for Ka-band broadcasting satellite services
Piero Gabellini;Nicola Gatti;Carlo Capsoni;Laura Resteghini;Antonio Martellucci;Peter Rinous
2012 6th European Conference on Antennas and Propagation (EUCAP)
Year: 2012 | Conference Paper |
Cited by: Papers (3)
A reconfigurable antenna front-end for Ka-band Broadcasting Satellite Services (BSS) constitutes an attractive solution to efficiently exploit the limited resources available onboard the satellite. In this respect the dynamic modification of the radiated power distribution over the service area according to the actual time-variant location of meteorological fronts allows counteracting the propagat...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
Beam hopping in multi-beam broadband satellite systems: System simulation and performance comparison with non-hopped systems
J. Anzalchi;A. Couchman;P. Gabellini;G. Gallinaro;L. D'Agristina;N. Alagha;P. Angeletti
2010 5th Advanced Satellite Multimedia Systems Conference and the 11th Signal Processing for Space Communications Workshop
Year: 2010 | Conference Paper |
A key requirement for the future multi-beam broadband satellite design is the provision of flexibility to adapt to different traffic demands by re-assigning capacity to beams in accordance with changing traffic distributions. Such flexibility would enable the best match to be maintained between the system resources and traffic demands over the satellite lifetime, thereby greatly enhancing the syst...Show More
Mitigation techniques for multi-beam broadcast satellite services
Proceedings of the Fourth European Conference on Antennas and Propagation
Year: 2010 | Conference Paper |
The transmission of huge quantities of data required today by the information society has brought to a compulsory need of new and very wide available frequency bands for both Multimedia and Broadcasting transmission. This, in turn, has implied to resort to very high and relatively new frequency bands. Presently the Ka-band, in perspective, the Q/V-bands are the most promising candidates to sustain...Show More
Meteorology-Driven Optimum Control of a Multibeam Antenna in Satellite Telecommunications
Aldo Paraboni;Mauro Buti;Carlo Capsoni;Davide Ferraro;Carlo Riva;Antonio Martellucci;Piero Gabellini
The control of the radiation of a telecommunication multispot satellite antenna is discussed in which the power can be flexibly routed towards the various spots so as to contrast at best the time variant atmospheric attenuation while keeping at minimum the number of users which do not receive enough signal level. The antenna control is exerted by applying a particular strategy based on the knowled...Show More
Analysis of performances of a Ka Band reconfigurable satellite antenna Front-End in a broadcasting application over the European territory
2008 IEEE International Workshop on Satellite and Space Communications
Year: 2008 | Conference Paper |
Cited by: Papers (2)
This paper describes the results obtained within a contract between the ESA, Politecnico di Milano and Space Engineering, in the section related to the study of an advanced satellite-based system for TV broadcasting in Ka Band. The system is characterized by the possibility of radiating the flux on the served region adaptively, in order to address more power in the zones suffering strong fades (i....Show More
Study of a flexible payload for S-band mobile broadcasting to multiple shaped beams
2007 IEEE Antennas and Propagation Society International Symposium
Year: 2007 | Conference Paper |
A feasibility study for a satellite multimedia broadcasting mobile system (S-MBMS) operating in S-band (2170-2200 MHz) was recently performed by the European Space Agency (ESA). The target coverage was defined to consist of multiple-shaped-beams coinciding with European countries or language homogeneous areas. Considering the noticeable effective aperture required in S-band from the geostationary ...Show More
Flexible payload architecture for multiple shaped-beam coverage from a S-DMB geostationary satellite system
2006 First European Conference on Antennas and Propagation
Year: 2006 | Conference Paper |
The paper presents the proposed architecture and the optimization results of a flexible payload for S-band mobile broadcasting to multiple shaped-beams. A key element in the payload is constituted by the high power section which provides RF power generation and distribution to feeds with appropriate amplitude and/or phase beamforming constraints to realize different shaped coverages. The outcome o...Show More
Assessment of performance of a Ka-band broadcasting reconfigurable satellite antenna with adaptive mitigation for atmospheric attenuation
A. Paraboni;C. Capsoni;M. Buti;S. Bertorelli;D. Moretti;P. Gabellini;N. Gatti;A. Martellucci;P. Rinous
2006 First European Conference on Antennas and Propagation
Year: 2006 | Conference Paper |
Cited by: Papers (4)
The flexibility given by a reconfigurable antenna can be exploited in various ways: redirecting capacity, tailoring the shape so as to match the borders of the served region, maximizing the total throughput etc. Another possibility, particularly valuable above the Ka-band owing to the sensitivity to atmospheric attenuation, is that of minimizing the number of non served users in a broadcasting sys...Show More
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