Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2020. No. 9
ContentsFull text in Russian (pdf)
DOI https://doi.org/10.30898/1684-1719.2020.9.14
UDC 621.396.2
Influence of turbulence in the tropospheric channel on the capacity of satellite communication systems in the Arctic
M. N. Andrianov 1, D. A. Korbakov 2, V. N. Pozhidaev 2
1 Lebedev Physical Institute of the Russian Academy of Sciences, Leninsky prosp., 53, Moscow 119991, Russia
2 Kotelnikov Institute of Radioengineering and Electronics of the Russian Academy of Sciences, Mokhovaya str. 11-7, Moscow 125009, Russia
The paper s received on September 18, 2020
Abstract. Algorithms for ensuring the high speed and reliability of data transmission under conditions of lognormal amplitude fluctuations caused by Fraunhofer diffraction in the tropospheric satellite communication channel with a coherent method of receiving signals are in the focus of the paper. It is shown that the use of millimeter(mm) radio waves in satellite communication lines in the Arctic significantly increases the transmission speed due to the increase in the channel frequency band, especially in comparison with communication lines of the decimeter and centimeter ranges. However, fluctuations in the signal amplitude resulting from tropospheric turbulence reduce noise immunity and data transfer rate. These factors determine the following features of the use of mm-range radio waves when organizing satellite communication channels. The advantage of using mm radio waves in the Arctic is the fact that the average probability of rain rate, for example, 33 mm/h will be 0.001%, while in the middle and southern latitudes of the Earth, the more intensive rains are more probable. For example, the rain rate 50 mm/h will result in an attenuation of the radio signal by about 10 dB. Compared to an attenuation of 4.7 dB (33 mm/h), this necessitates an almost double increase in transmitter power. Since the probability of rain intensity (33 m/h) is 0.001%, and rain intensity (2 m/h) is 0.1%, it becomes possible to receive a radio signal with a higher signal-to-noise ratio 90% of the time, which in turn allows a significant time interval to disable error-correcting coding. This increases the flexibility of the satellite communication system, increases its reliability and data transmission speed.
Key words: satellite communications, telecommunications, radiowave propagation, millimeter waves, the Arctic meteorological data.
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For citation:
Andrianov M.N., Korbakov D.A., Pozhidaev V.N. Influence of turbulence in the tropospheric channel on the capacity of satellite communication systems in the Arctic. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2020. No.9. https://doi.org/10.30898/1684-1719.2020.9.14. (In Russian)