Noise-resistant modem for communication with deep-sea vehicles
V.L. Khazan1, V.F. Myshkin2, V.A. Khan2,3, E.S. Abramova4, V.A. Dvoryanchikov5, M.S. Zavyalov5
1Omsk State Technical University, Omsk, Russia
2Research Tomsk Polytechnic University, Tomsk, Russia
3V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
4Siberian State University of Telecommunications and Information Sciences, Novosibirsk, Russia
5Omsk Research Institute of Instrument Engineering, Omsk, Russia
Keywords: signal quadrature, mutually orthogonal binary sequences, intrapulse modulation, phase modulation, code combination, errors probability, noise-resistant modem, deep-sea vehicle
Abstract
The operation of an anti-jamming modem for wireless remote communication with deep-sea vehicles using ELF radio signals with quadrature intrapulse phase modulation (QIPPM) is described. In QIPPM, the signals quadrature are manipulated by mutually orthogonal binary sequences, which allows a radio anti-jamming pulse to transmit various code combinations, which are control and communication commands. It is shown that the technique for transmitting control commands by QIPPM gives an energy gain of about 3 dB over the method of transmitting information using phase shift signals. Therefore, the maximum transmission depth of control commands to underwater objects increases by up to 2 times.
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