E.V. Ovchinnikova¹, S.G. Kondratieva², P.A. Shmachilin³,  Nguen Dinh To4, E.V. Gadzhiev5, A.O. Perfilova6

1−5 Moscow Aviation Institute (National Research University) (Moscow, Russia)

2,3 Peoples Friendship University of Russia (Moscow, Russia)

5 JC “VNIIEM Corporation” (Moscow, Russia)

6 LLC “Inspider” (Moscow, Russia)

The paper considers the state and prospects for the development of radio data communication of target information, including the ones used in the onboard antenna system. The given radio date are used both in large spacecraft of “Meteor-M” series and in small spacecraft of “Kanopus-V” series.

The applied onboard antennas of meter, decimeter and centimeter ranges as part of the radio date of "Kanopus-V" and "Meteor-M" series spacecraft are considered.

The principles of development and characteristics of the used radio data communication of target information as part of the above spacecraft are described. The centimeter radio date include two transmitters and two antenna feeder devices. This method for the development of the onboard radio data communication of target information allows the information transmission at a speed of 61.44 Mbit/s and 122.88 Mbit/s. The advantages and disadvantages of developing the specified radio date are shown.

The paper analyzes modern requirements for a radio date. At present, the requirements for the radio data communication of target information have been upgraded and made tougher. An improvement in the spatial resolution of modern spacecraft images for remote sensing of the Earth leads to an increase in the amount of information that must be promptly transmitted to ground information centers. It is shown that to develop a high-speed and ultra-high-speed radio date, it is necessary to provide data transmission at a speed of up to 1 Gbit/s. In turn, there are a number of factors limiting the development of a high-speed radio date, which are presented in this paper.

One of the options for developing a high-speed radio date is based on increasing the capacity of satellite radio date:

compression of headers of packets of network and transport layers; multiprotocol encapsulation;

application of multilevel modulation and highly efficient error-correcting coding; providing the regime of adaptive modulation and coding; combination of the used frequency ranges.

In addition to the above methods, which are based on either expanding the used frequency range or increasing the efficiency of using the frequency resource, capacity gain can be achieved by increasing the radio date power. However, this inevitably leads to an increase in the weight and size characteristics and the cost of onboard equipment of the spacecraft, as well it is limited by the international regulatory documents.

The analysis of the used frequency ranges is carried out to develop a high-speed radio date. During the analysis, the choice was made in favor of the centimeter frequency range (8025 ...8400 MHz).

Thus, the trends for the further development of the antenna system of the radio data communication of target information are:

increasing the volume of information transmitted from the spacecraft to ground communication centers; reduction in the mass of radio data communication of target information equipment; reduction of power consumption of radio data communication of target information equipment; cost reduction; increased reliability.

Ovchinnikova E.V., Kondratieva S.G., Shmachilin P.A., Nguen Dinh To, Gadzhiev E.V., Perfilova A.O. State and prospects for the development of antenna systems for spacecraft radio date communication of transmitting information. Radiotekhnika. 2021. V. 85. № 3. P. 86−95. DOI: https://doi.org/10.18127/j00338486-202103-09 (In Russian).

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