APPARATUS FOR PROTECTING ACOUSTIC INFORMATION FROM HIGH-FREQUENCY INTERFERENCE OVER A RADIO CHANNEL Russian patent published in 2020 - IPC H04K1/04 

FIELD: radio equipment.

SUBSTANCE: invention relates to radio engineering and can be used to protect speech, acoustic information from unauthorized listening using unauthorized information retrieval devices using high-frequency imposition and transmitting information over a radio channel. Device is combined and combines a broadband radio scanner and an adaptive generator of electromagnetic narrow-band interference, which operate alternately according to a given algorithm. Device performs successive scanning to determine the electromagnetic profile in the entire frequency range and to identify frequencies at which emission of HF impingement is possible. When scanning in RAM, the level and frequency values of signals, on which emission of HF impingement is possible, are recorded. HF imposition is determined by the signal level and the absence of modulation of narrow-band signals.

EFFECT: technical result consists in improvement of quality of protection of speech information.

3 cl, 3 dwg