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Title
Perspectives and development priorities of the information satellite systemsAuthors
N.A. Testoyedov, A.V. KuzovnikovOrganization
JSC «Academician M. F. Reshetnev» Information Satellite Systems»Zheleznogorsk, Krasnoyarsk region, Russian Federation
Abstract
The main directions of the development of satellite communication systems, broadcasting and retransmission of information are considered. The main trend in the development of space telecommunications systems now is the transition to satellites using HTS (High throughput satellites) technology is shown. For modern HTS satellites the throughput is up to 100–150 Gbit/s, the projects of the next generation of HTS satellites will allow to increase the throughput several times. The determining factor for the bandwidth of the HTS satellites is the number of beams and the frequency band in the beam available for use. As the number of rays increases, their directional pattern needs to be reduced. Modern HTS satellites have 70–80 rays with a beamwidth of 0,4–0,7 degrees. The projected satellites will have 150–250 beams with a beamwidth of 0,2–0,3 degrees. So the capacity of the projected satellites will reach 0,5 Tbit/s, and in some projects even 1 Tbit/s. When implementing feeder links with central stations, this leads to the need to go to the V-band of radio frequencies. This solution will allow to use small-sized subscriber terminals that provide data transfer rates in excess of 1 Gbit/s, and will allow creating ultra-wideband communication systems with a high level of signal interference protection. This will help to «unload» the frequency resource in the already used radio frequency bands. One more important feature of HTS satellites - the using of transparent digital processors, providing a flexible redistribution of the required frequency resource depending on the traffic of the system is shown. Introduction of the presented innovations will allow creating new telecommunication systems that meet all modern requirements.Keywords
spacecraft, satellite communications, broadband fixed communication, contour antennas, multi-beam antennas, HTS satellitesReferences
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For citing this article
Testoyedov N.A., Kuzovnikov A.V. Perspectives and development priorities of the information satellite systems // The Research of the Science City, 2017, vol. 1, no. 1, pp. 7-10.
This Article is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).