Results 121 to 130 of about 330 (175)
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Commercial SATCOM communications protection: Commercial SATCOM resilience to jamming
2011 - MILCOM 2011 Military Communications Conference, 2011Commercial satellite communications are occasionally targeted by jamming for political/ideological reasons or suffer the effects of accidental interference. Jamming is rare enough that it is generally considered a tolerable business risk. Traditionally the threat has not been preemptively mitigated with anti-jam technologies.
Wiliam Hreha, Dave Grybos, Rob Singh
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Secure MIMO SATCOM Transmission
MILCOM 2013 - 2013 IEEE Military Communications Conference, 2013An analysis on the secrecy capacity of a primary MIMO satellite link as compared to that of an eavesdropper is provided. It is presumed that the information sent by the satellite Alice is addressed to a limited number of ground terminals Bob but could potentially be eavesdropped by an unlimited and unknown number of malicious ground terminals Eve that ...
Andreas Knopp +2 more
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Optimization of compact SATCOM terminals
2012 Military Communications and Information Systems Conference (MilCIS), 2012A strategy to optimize dual-reflector antennas for compact Satellite Communications (SATCOM) terminals to meet various user-specified requirements is described. An overview of the method and design methodology is given, and some of the challenges in designing compact antennas as compared to traditional large Earth Station antennas are described.
Christophe Granet +3 more
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DOD SATCOM Growth Measurement and Planning
MILCOM 2022 - 2022 IEEE Military Communications Conference (MILCOM), 2022Armando J. Vigil +5 more
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MIMO Applicability to UHF SATCOM
2016 IEEE Global Communications Conference (GLOBECOM), 2016Narrowband satellite communications (SATCOM) in the ultra high frequency (UHF) band is an attractive option within the military SATCOM (MILSATCOM) community. The UHF user terminals (UTs) are typically low cost, easily deployable and have broad beamwidths so that precise pointing to the satellite is not a requirement for mobile users.
Balachander Ramamurthy +2 more
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EHF options for contested SATCOM
2011 - MILCOM 2011 Military Communications Conference, 2011The capacity limitations and jamming vulnerability of transponder satellites, both commercial and military, are of increasing concern to warfighters heavily dependent on SATCOM for beyond-line-of-sight connectivity. EHF payloads offer a robust, jam-resistant waveform but capacity is limited and both satellites and terminals are expensive.
Leonard Schiavone, David Hendry
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ACM SIGMETRICS Performance Evaluation Review, 2019
State-of-the art multi-gateway ground segments follow the architectural trends in cellular networks (C-RAN approachs)and uses the same kind of connectivity. That being said, the specificity of the link characteristics make the use of TCP proxies essential for both good radio ressource exploitation and good end-users' quality of service.
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State-of-the art multi-gateway ground segments follow the architectural trends in cellular networks (C-RAN approachs)and uses the same kind of connectivity. That being said, the specificity of the link characteristics make the use of TCP proxies essential for both good radio ressource exploitation and good end-users' quality of service.
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2008 18th International Crimean Conference - Microwave & Telecommunication Technology, 2008
A satcom data processor has been developed. The data processor is intended for use within a satellite communication system.
M. A. Tyurin, R. V. Davidoff
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A satcom data processor has been developed. The data processor is intended for use within a satellite communication system.
M. A. Tyurin, R. V. Davidoff
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Ku band amplifier design for satcom systems
2016 24th Telecommunications Forum (TELFOR), 2016 Medium-power Ku Band amplifier block is designed for Satcom applications. The amplifier is low-power, and intended for driver amplifier or first-stage amplifier after frequency up-conversion in block-up conversion unit. Two-stage amplifier has 18dB gain and 0.9dB maximum ripple in 13.75–14.5 GHz band which is designated as the transmit band of Ku band ...
Korkut Yegin
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Realising personal SATCOM antennas
Tenth International Conference on Antennas and Propagation (ICAP), 1997Designing a constellation of low orbiting satellites with lowered orbits, higher radiated powers and complex beam shaping are obvious ways of making existing types of personal handset antennas practically realisable. An obvious question is whether or not the requirements for personal satellite terminals are much different from existing personal mobile ...
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