P.A. Zemlyanukhin , A. V. Kondratiev, S.S. Svidelsky
2021-01-19
Abstract ▼
The purpose of this work is to study the principle of operation and characteristics of a modulation- type noise signal conditioner in which quasi-harmonic noise signals are used as a carrier oscillation and modulating signal and in which the spectrum width of the noise signal is controlled in a given frequency range. A study of the structure of the construction characteristics of the noise signal generator that can be used to create adaptive multichannel noise generators to provide active protection of informative components of side electromagnetic radiation and interference (SERaI). According to the sources of domestic and foreign literature, as well as patent documentation, the analysis of technical solutions for the implementation of noise generators intended for masking SERaI were analyzed. The analysis confirmed the relevance of the problem of creating adaptive noise generators. It is noted that it is necessary to create multichannel adaptive noise generators to improve the characteristics of noise generators and make them more widely used in order to effectively counteract unauthorized leakage of information by hackers through the SERaI radiation channels. In these generators, each noise channel can be adjusted for power, generated noise signal and control of the noise masking frequency bandwidth, which will increase the electromagnetic compatibility of such devices. To ensure this, it is proposed to use two analog signalmultipliers in the noise signal conditioner, from the outputs of which the noise signals are summed and sent to the output of the noise signal conditioner which allows to obtain a uniform noise signal in amplitude. It provides control over the spectral width of the noise signal at least twice as compared to traditional methods of generating a noise signal using modulation methods.
