M.L. Artemov1, D.Yu. Gordienko2, M.P. Slichenko3, S.P. Trushin4

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

2-4 JSC «Concern «Sozvezdie» (Voronezh, Russia)

1,2 Voronezh State University (Voronezh, Russia)

1 martemov@vniivega.ru; 3 m.p.slichenko@sozvezdie.su

Problem formulation. In a complex electromagnetic environment, the noise covariance matrix is generally not diagonal and is determined by the structure and characteristics of external interference. In such a situation, the implementation of detection algorithms without taking into account the real structure of the covariance matrix can lead to an increase in false alarm and signal transmission, a decrease in the accuracy and reliability of direction finding. With regard to multichannel direction finders, it is necessary to develop a specialized algorithm for adapting to an a priori unknown noise covariance matrix in a dynamically changing electromagnetic environment.

Purpose. Development of an adaptive algorithm for detecting radio emission sources based on the results of a "non-energy" procedure for multichannel spatial correlation processing of radio signals in a dynamically changing electromagnetic environment.

Results. Disclosed is a novel algorithm for detecting radio signals with dynamic adaptation based on a procedure for dynamic estimation of noise dispersion based on results of spatial-multichannel detection of radio signals. Due to the use of the "non-energy" criterion for selecting noise samples, the algorithm is devoid of many shortcomings that are widespread in the practice of radio monitoring. In particular, the algorithm does not require a priori information about the minimum frequency proximity between signals adjacent to the frequency, reliable information about which is not available in real conditions.

Practical significance. The algorithm can be used in radio monitoring systems when solving problems of detecting signals during their technical analysis in a complex dynamically changing electromagnetic environment.

Artemov M.L., Gordienko D.Yu., Slichenko M.P., Trushin S.P. Detection of radio emission sources by the results of multichannel spatial-correlation processing of radio signals in dynamically changing electromagnetic environment. Radiotekhnika. 2025. V. 89.
№ 9. P. 70−77. DOI: https://doi.org/10.18127/j00338486-202509-07 (In Russian)

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