M.L. Artemov1, O.V. Afanasiev2, M.P. Slichenko3, S.P. Trushin4

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

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

1 martemov@vniivega.ru; 2 martemov@vniivega.ru; 3 m.p.slichenko@sozvezdie.su

Problem statement. Spatial-multichannel radio reception of signals allows to implement signal detection invariant to their energy and based on spatial difference in statistical characteristics of signal and noise. For the problem of direction finding of mutually intersecting frequency-time domains of signals, the possibility of implementing the algorithm of spatial discrimination of signals before performing the direction finding procedure is of particular importance. Therefore, approaches to signal discrimination based on "non-energy" spatial correlation discrimination of signals in the frequency-time domain are of particular relevance.

Objective. Development of a new method for discrimination and direction finding of radio emission sources with mutual overlap of radio signals in the frequency-time domain.

Results. A new approach to solving the problem of spatial discrimination and direction finding of radio emission sources with mutual overlap of radio signals in the frequency-time domain is proposed. Unlike energy detection, the approach involves the use of a "non-energy" detection criterion based on calculating the coefficient of mutual spatial correlation of signals and the transition to the analysis of the spatial correlation spectrogram. In order to reduce computational costs during direction finding, a new method for reducing the dimension of the target function space to a dimension corresponding to the number of unknown parameters of the direction of arrival is proposed. In the general case, this approach allows implementing spatial correlation processing of multidimensional random fields of various natures with the achievement of the required efficiency of statistical Bayesian estimation within the framework of the Fisher information metric.

Practical significance. The results of the work can be used to solve problems of detecting and taking direction of radio emission sources in a complex electromagnetic environment.

Artemov M.L., Afanasiev O.V., Slichenko M.P., Trushin S.P. Distinguishing and direction finding of radio emission sources with mutual overlap of radio signals in the frequency-time domain. Radiotekhnika. 2025. V. 89. № 9. P. 89−97. DOI: https://doi.org/10.18127/j00338486-202509-09 (In Russian)

1. Artemov M.L., Slichenko M.P., Trushin S.P. Metod obnaruzhenija granic radiosignala v chastotno-vremennoj oblasti na osnove operatora mnogomernogo matrichnogo okna. Radiotehnika. 2024. T. 88. № 12. S. 5-15. DOI: https://doi.org/10.18127/j00338486-202412-01 (in Russian).
2. Artemov M.L., Slichenko M.P., Trushin S.P. Rezul'taty obnaruzhenija granic radiosignalov na osnove operatora mno-gomernogo matrichnogo okna. Sb. trudov XXX Mezhdunar. nauch.-tehnich. konf. «Radiolokacija, navigacija, svjaz'». V 5-ti tomah. Voronezh. 2024. S. 140-145 (in Russian).
3. Artemov M.L., Slichenko M.P., Trushin S.P. Statisticheskie harakteristiki obnaruzhenija granic radiosignalov na os-nove operatora mnogomernogo matrichnogo okna. Sb. trudov XXX Mezhdunar. nauch.-tehnich. konf. «Radiolokacija, navigacija, svjaz'». V 5-ti tomah. Voronezh. 2024. S. 134-139 (in Russian).
4. Artemov M.L., Borisov V.I., Makovij V.A., Slichenko M.P. Avtomatizirovannye sistemy upravlenija, radiosvjazi i radiojelektronnoj bor'by. Osnovy i principy postroenija. Monografija. Pod. red. M.L. Artemova. M.: Radiotehnika. 2021. 566 s. (in Russian).
5. Artemov M.L., Afanas'ev O.V., Slichenko M.P. Obnaruzhenie i pelengovanie istochnikov radioizluchenij v ramkah teorii statisticheskoj radiotehniki. Radiotehnika. 2016. T. 80. № 5. S. 4−18 (in Russian).
6. Artemov M.L., Afanas'ev O.V., Slichenko M.P. Algoritm gruppirovanija spektral'nyh komponent signalov istochnikov radioizluchenija monoimpul'snymi obnaruzhiteljami-pelengatorami. Teorija i tehnika radiosvjazi. 2015. № 4. S. 5-10 (in Russian).
7. Artemov M.L., Slichenko M.P., Trushin S.P. Metod obnaruzhenija istochnikov radioizluchenija v chastotno-vremennój ob-lasti na osnove okonnyh matrichnyh operatorov. Radiotehnika. 2025. T. 89. № 9. S. 78-88. DOI: https://doi.org/10.18127/j00338486-202509-08 (in Russian).
8. Artemov M.L., Slichenko M.P. Sovremennyj podhod k razvitiju metodov pelengovanija radiovoln istochnikov radioiz-luchenija. Antenny. 2018. № 5. S. 31−37 (in Russian).
9. Artemov M.L., Slichenko M.P. Adaptivnyj mnogosignal'nyj algoritm sovmestnogo obnaruzhenija i pelengovanija ploskih monohroma-ticheskih radiovoln s pomoshh'ju mnogokanal'nogo radiopelengatora s antennoj sistemoj proizvol'noj konfiguracii. Antenny. 2014. № 5. S. 50−54 (in Russian).
10. Artemov M.L., Afanas'ev O.V., Slichenko M.P. Maksimal'no pravdopodobnaja ocenka kolichestva chastotno-nerazdelimyh radiovoln v ramkah teorii statisticheskoj radiotehniki. Radiotehnika. 2016. T. 80. № 5. S. 19−25 (in Russian).
11. Dmitriev I.S., Slichenko M.P. Predstavlenie periodicheskih funkcij s finitnym spektrom Fur'e modificirovannym rjadom Kotel'nikova. Radiotehnika i jelektronika. 2015. T. 60. № 5. S. 529-534 (in Russian).
12. Dmitriev I.S., Slichenko M.P. Osobennosti interpoljacii 2π-periodicheskih funkcij s finitnym spektrom Fur'e na osnove teoremy otschetov. Zhurnal radiojelektroniki RAN. 2014. № 1. (in Russian).
13. Slichenko M.P. Predstavlenie mnogomernyh periodicheskih funkcij v vide konechnoj vzveshennoj summy otschetnyh znachenij. Radiotehnika i jelektronika. 2014. T. 59. № 10. S. 1042-1049 (in Russian).