A.A. Podmarev1, O.V. Pavlovich2, A.A. Maslennikova3

1–3 JSC “V.V. Tikhomirov Scientific Research Institute of Instrument Design” (Zhukovsky, Russia)

For the effective and well-coordinated work of military units in medium-range anti-aircraft missile systems (MR AAMS), it is required to quickly exchange information. The information exchange between the combat means of the MR AAMS consists of telecode and voice information. There are different ways of exchanging information, but wired and fiber-optic communication lines are considered to be the most reliable. The advantages of these communication lines include high jamming protection, immunity to external factors of electromagnetic influence and high secrecy in conditions of electronic warfare. Along with the advantages of these types of communication, there are also disadvantages: communication lines are susceptible to mechanical damage, considerable time is spent on laying the LAN and its dismantling, which negatively affects the mobility of the anti-aircraft missile system.

In addition to wired and fiber-optic communication lines, radio communication is actively used. The main problems of using a radio communication channel are: radio emission that can be detected by the enemy, partial or complete loss of information as a result of the operation of electronic warfare equipment, a limited range and a strong dependence of the quality of communication on the landscape and objects of shading. If we compare wired and fiber-optic communication with radio communication, then the latter is more flexible, and the above problems are solved by using directional antennas, using noise-immune coding, increasing power, using repeaters, etc. If the task is to provide communication for several calculations located at a considerable distance from each other in a complex landscape, then the listed measures may not be effective. The way out of this situation will be the use of repeaters installed on aircraft, such as an airplane, unmanned aerial vehicle, balloon or satellite. Each of these media has its own merits and demerits. Along with others, the UAV has a number of advantages.

The authors carried out studies on the possibility of creating a mobile repeater of information exchange signals between the combat assets of the anti-aircraft missile systems based on UAVs.

To create a mobile repeater, calculations were made of the minimum height of the UAV and the energy of the radio channel. The calculations showed that to ensure line of sight within 100 km, on flat terrain, it will be necessary to raise the repeater antennas to a height of 150 m from the ground. The performed calculations confirm the operability of the information signal relay system under the given conditions. A block diagram of a relay system using SDR technologies and communication with UAVs via fiber-optic communication lines is proposed.

Podmarev A.A., Pavlovich O.V., Maslennikova A.A. Explanation of the choice of the repeater structure for receiving and transmitting information signals based on SDR. Science Intensive Technologies. 2021. V. 22. № 6. P. 19−24. DOI: https://doi.org/10.18127/j19998465-202106-02 (in Russian)

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