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- Article name
- Derivative method for calculating the spectral components of a signal in a parametric channel for intercepting acoustic speech information
- Authors
- Avdeev V. B., , avb1952@mail.ru, Federal Autonomous Institution "State Research Testing Institute of Problems of Technical Protection of Information of the Federal Service for Technical and Export Control of Russia", Voronezh, Russia
Katrusha A. N., , alexholms@mail.ru, Military Training and Research Center of the Air Force "Air Force Academy named after Professor N. E. Zhukovsky and Y. A. Gagarin", Voronezh, Russia
- Keywords
- acoustic speech reconnaissance / high-frequency irradiation / approximate calculation methods / spectral analysis
- Year
- 2025 Issue 1 Pages 33 - 39
- Code EDN
- JBTMNJ
- Code DOI
- 10.52190/2073-2600_2025_1_33
- Abstract
- The article develops a method for calculating the spectral components of the received signal at combinational frequencies in a parametric channel for intercepting acoustic speech information. The method is based on the determination of derivatives of the channel transfer function by the channel parameter changed under the influence of a harmonic sound wave. The proposed method allows to obtain analytical expressions for the levels of spectral components at combinational frequencies. This makes it possible to carry out a qualitative analysis of the obtained expressions and to determine the optimal channel parameters for maximizing the informative spectral components at side frequencies. The obtained results can be used to assess the achievable possibilities of interception of acoustic speech information through a given parametric channel, as well as to develop measures to counteract interception.
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