Evaluation of the possibility of using a radio communication channel to transmit video information between an unmanned underwater vehicle and a remote control

Purpose of research. The relevance of the conducted research is due to the fact that in recent years, unmanned underwater vehicles have become more accessible and effective, which has led to their widespread use and implementation in various industries, including solving the problems of the Ministry of the Russian Federation for Civil Defense, Emergencies and Elimination of Consequences of Natural Disasters. The technological advancement of these devices allows performing tasks underwater without direct human participation through the use of sensors, cameras and a number of other devices with high tactical and technical characteristics.
The purpose of the research is to assess the maximum transmission range of FullHD quality video information from an unmanned underwater vehicle for identifying underwater objects during monitoring by rescuers in emergency situations.
Methods. The research methods are based on the basic provisions of radio communication theory, diagnostic theory and methods for predicting the technical condition of underwater vehicles. The principles of transmitting video information from unmanned underwater vehicles used to monitor the seabed are analyzed. A critical assessment of the maximum distance of removal of an unmanned underwater vehicle from the operator in a rescue operation is made.
Results. The energy reserve indicator in a communication channel with a frequency of 1 GHz during data transmission at speeds corresponding to the plesiochronous digital hierarchy was estimated to be 50–70 meters. The signal attenuation was estimated, in which at a distance of 100 meters from the source electromagnetic waves weaken by 200 dB. The maximum range of radio transmission in underwater space at a frequency of 1 GHz using KAM-16 and turbo codes 3/4 was estimated to be 55 meters.
Conclusion. The use of high-speed short-range radio communication technology, which helps ensure the secrecy of underwater radio communication, should be considered as promising areas of research in the field of using unmanned underwater vehicles in water space.

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