Results 201 to 210 of about 29,693 (250)
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Propagation considerations in satellite communication systems
Proceedings of the IEEE, 1990Radiowave propagation phenomena that affect the performance of satellite communication systems are concisely discussed to introduce some topics in propagation research related to satellite systems design and to illustrate related problems and uncertainties. The focus is on tropospheric effects. A summary of relevant propagation impairments is supplied,
Gert Brussaard, David V. Rogers
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Satellite communication systems
Physics Bulletin, 1965Within the last few months satellite communication systems have moved from the experimental phase of the Telstar and Relay satellites to the beginnings of commercial operation with the HS 303 (Early Bird) synchronous orbit satellite. When one considers the leap forward in technology, which the art of using satellites for world-wide communication itself
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ACE: A Satellite Communication System Emulator
20th AIAA International Communication Satellite Systems Conference and Exhibit, 2002ACE (a short for ASI CNIT Emulator) is a real time simulator of satellite communication systems based on IP packet transmissions. It has been implemented with the financial support of the Italian Space Agency (ASI) by CNIT, a consortium grouping all major technical universities in Italy. ACE is a “virtual satellite” able to operate with real traffic in
ALBERTENGO, GUIDO, PETROIANNI S.
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System study on Gigabit satellite communications
Space Communications, 1998The objective of the Gigabit satellite is to provide the global high‐data‐rate communications network. The key technologies are the Ka‐band scanning sport beams, on‐board ATM switch, inter‐satellite laser link and the advanced beam control.
Ryoichi Imai +4 more
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Satellite Communication Systems
2017In satellite communication (Fig. 7.1), satellites are used to relay signals between ground stations. The signal is received from one ground station and re-transmits to one or more receiving ground stations elsewhere with the help of satellite.
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Business forecasting for communication satellite systems
Communications Satellite Systems Conference, 1966Abstract This paper provides general guidelines for those interested in the general mechanics of projecting and forecasting the growth of a global satellite system but, in particular, for those interested in estimating the economic benefits accruing to participants in such a system.
L.B. Early, L. Kumins, J. Baer
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Asia-pacific satellite communications system
1st International Symposium onWireless Communication Systems, 2004., 2005The authors propose herein a large-capacity satellite intranet and dedicated evolutionary communications services for business users, which offer high availability, low cost and security, by using a network that is separate from the Internet. Ka band spot beams enable high-speed transmission of 1.2 Gbps per transponder and 90 Gbps per satellite.
K. Miyoshi, M. Miura
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Global satellite communications technology and systems
Space Communications, 2000This special issue of Space Communications contains nine papers derived from a study, ‘Global satellite communications technology and systems’, sponsored by NASA and the NSF. The purpose of this study was to compare the position of the US in commercial satellite communications technology, research, development and markets with that of the rest of the ...
Alfred U. Mac Rae +2 more
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Scheduling and control of satellite communication systems
Communications Satellite Systems Conference, 1966Abstract This paper examines important parameters of the satellite communication system control problem and defines the scheduling function for satellite communication control systems. Scheduling is considered as the function of matching communication requirements to system assets over a particular period of time.
Ward Ellis, Morton D. Lenske
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A Communication Satellite System for Many Users
Communications Satellite Systems Conference, 1966Abstract A demand is anticipated for communication satellite facilities by-many small users, each of which will have widely different antenna size and data-rate requirements. A system using time-division multiple-access modulation (TDMA satisfies this demand. The satellite contains a hard-limiting repeater of moderate bandwidth.
R. DAVIES, J. STEPHENSON
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