M.L. Artemov1, M.P. Slichenko2, S.P. Trushin3

1 JSC « VSRI «Vega» (Voronezh, Russia)

2,3 JSC «Concern «Sozvezdie» (Voronezh, Russia)

1 martemov@vniivega.ru; 2 m.p.slichenko@sozvezdie.su

Problem statement. The use of broadband radio signals in modern radio communication and data transmission links requires the improvement of radio monitoring algorithms for such radio links under conditions of complex electromagnetic shutdown, including those characterized by mutual superposition of signals from different radio links in the frequency-time domain. Extensively studied one-dimensional methods and algorithms for detecting signals in both the time and spectral domains have significant limitations in their applicability when processing radio signals in the two-dimensional frequency-time domain. This task requires the use of a specialized approach that takes into account the geometry of the signal domain and is based on the fundamentals of the theory of statistical radio engineering.

Objective. Development of a method for determining the frequency-time boundaries of radio signals and the corresponding signal domains on a frequency-time spectrogram based on window matrix operators.

Results. A method has been developed for detecting and determining time-frequency boundaries of radio signals and their signal regions on a time-frequency spectrogram based on window matrix operators that take into account the geometry of the signal region. The use of these operators allows you to determine the location of special points of the border of signal areas - the angles in which information about the frequency-time boundaries of radio signals is concentrated. An advantage with respect to one-dimensional detection methods is the ability to determine not individual signal samples characterized only by energy, but connected frequency-time signal regions, the boundaries of which are characterized by local energy growth along the frequency and time axes.

Practical significance. The results of the work can be used in the development and design of digital signal processing equipment, in particular, in relation to the tasks of detecting broadband radio communication lines and data transmission.

Artemov M.L., Slichenko M.P., Trushin S.P. Method for detecting and determining time-frequency parameters of radio-frequency source signals based on window matrix operators. Radiotekhnika. 2025. V. 89. № 9. P. 78−88. DOI: https://doi.org/10.18127/j00338486-202509-08 (In Russian)

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