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COMPLEX MODEL OF A CHANNEL OF RETRANSMISSION OF DIAGNOSING SIGNALS AT RADIOCONTROL OF SATELLITE COMMUNICATION LINKS
Roman I. Burov, Military-air Academy of a name of professor N.E.Zhukovsky and U.A.Gagarin, Voronezh, Russia, bri555@mail.ru
Alexander I. Grevtcev, Military-air Academy of a name of professor N.E.Zhukovsky and U.A.Gagarin, Voronezh, Russia, shashafish@mail.ru
Boris V. Illarionov, Military-air Academy of a name of professor N.E.Zhukovsky and U.A.Gagarin, Voronezh, Russia, illbv@mail.ru
Abstract
At designing of satellite communication links and calculation of service areas any are considered, even the most severe, combinations of propagation conditions of signals, that at repeater operation leads to essential underestimation of the calculated signal level in comparison with actually supplied. In these conditions the control of conformity of the declared characteristics to real level of fluence of the power, created by an artificial satellite-repeater at an earth surface, with a view of electromagnetic compatibility provision, is the most priority problem of radiocontrol. At carrying out of radiocontrol of satellite communication links by methods of active diagnostics it is necessary to determine rationally parametres of diagnosing signals that they met inconsistent requirements on their confident method after retransmission by the companion without violation (capacity reduction) of performance of satellite communication links. In activity mathematical modelling of a channel of retransmission of diagnosing signals is conducted at a multi-station mode of a repeater taking into account a mutual space arrangement of the companion, a service area and radiocontrol station. In model the majority of known factors and features of distribution of radio signals in satellite communication links with reference to the various statistical phenomena in atmosphere (a refraction, a signal unpolarizing), and also instability of a rule of an artificial satellite in an orbit and the variability of margins of a cover zone coupled to it are considered. As a result of modelling conclusions that in the conditions of aprioristic ambiguity about polarising parametres of aerials used onboard the controllable companion there is a basic capability of active diagnostics of trunks of a repeater without attenuation of the diagnosing signal caused by mismatching of polarisation are drawn. Besides, there are basic capabilities of detection of occurring variations in a configuration of controllable satellite communication link ÑïÑ (variations of margins of a cover zone, distribution of subscribers in a service area) and obtaining of a quantitative estimation of congestion of a repeater (quantity of subscribers).
Keywords: a repeater satellite, radiocontrol, a satellite communication, diagnosing signals, a retransmission channel.
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Information about authors:
Roman I. Burov, Candidate of Engineering Sciences, Associate Professor, Radio Engineering Department, Federal State-Funded Military Educational Institution of Higher Professional Education Military-air Academy of a name of professor N.E.Zhukovsky and U.A.Gagarin, Voronezh, Russia
Alexander I. Grevtcev, Candidate of Engineering Sciences, Associate Professor, Radio Engineering Department, Federal State-Funded Military Educational Institution of Higher Professional Education Military-air Academy of a name of professor N.E.Zhukovsky and U.A.Gagarin, Voronezh, Russia
Boris V. Illarionov, Doctor of Engineering Sciences, Professor, Radio Engineering Department, Federal State-Funded Military Educational Institution of Higher Professional Education Military-air Academy of a name of professor N.E.Zhukovsky and U.A.Gagarin, Voronezh, Russia