PHYSICAL MECHANISMS OF CREATION OF TECHNICAL LEAKAGE CHANNELS ACOUSTIC INFORMATION

Abstract

Relevance. Physical processes occurring in technical devices and systems create side electromagnetic and acoustic radiation in the surrounding space. Accordingly, to develop effective methods and means of information protection, it is necessary to understand the physical foundations of the creation of the specified side radiation. Object of research: physical processes leading to the appearance of technical channels of acoustic information leakage. Purpose of the article: to consider the physical mechanisms of creating technical channels of acoustic information leakage and measures to prevent these information leaks. Research results. The work revealed that acoustic and acousto-vibrational channels of information leakage are formed as a result of the propagation of acoustic waves in diffusive and elastic environment, respectively. Acoustoelectric channels of information leakage are formed as a result of the parasitic transformation of acoustic signals into electric ones on the elements of electronic devices. Acousto-optoelectronic channels are formed by removing the surface’s oscillations of engineering or building constructions. Channels of high-frequency binding are formed as a result of radiation by conductive elements of a modulated high-frequency signal. Conclusions. Thus, the physical mechanisms of creating technical channels for the leakage of acoustic information at the object of information activity were clarified and means of protection against them were considered. In particular, a common means of protection for all these channels of acoustic information leakage is the use of acoustic, vibration and linear noise at the object of information activity.