Vol. 34, issue 12, article # 10

Khazan V. L., Myshkin V. F., Khan V. A., Abramova E. S., Dvoryanchikov V. A., Zavyalov M. S. Noise-resistant modem for communication with deep-sea vehicles. // Optika Atmosfery i Okeana. 2021. V. 34. No. 12. P. . DOI: 10.15372/AOO20211210 [in Russian].
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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.

Keywords:

signal quadrature, mutually orthogonal binary sequences, intrapulse modulation, phase modulation, code combination, errors probability, noise-resistant modem, deep-sea vehicle

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