E.I. Minakov1, N.S. Antipov2, S.V. Bogdanovsky3, А.V. Zyuzin4

1 Tula State University (Tula, Russia)

2,4 Yaroslavl Higher Military School of Air Defense n.a. Marshal of the Soviet Union L.A. Govorov (Yaroslavl, Russia)

3 Military Order of Zhukov University of Radio Electronics (Cherepovets, Vologda Region, Russia)

1 eminakov@bk.ru, 2 nikita.antipov@internet.ru, 3 bogdan141@mail.ru, 4 aleksey.zyuzin@mail.ru

Problem formulation. The relevance of this study stems from the reduced efficiency of traditional energy methods in existing passive radar systems when processing signals with a dynamic spatial-polarization structure. The resulting polarization mismatch leads to significant energy losses and a reduced probability of accurate detection.

Purpose. Therefore, the aim of this study is to develop, implement, and test a method for detecting these signals based on calculating the polarization parameter anomaly coefficient, as well as to evaluate its sensitivity to the signal-to-noise ratio in comparison with the classical energy method.

Results. The proposed method, based on the Neyman–Pearson criterion, is implemented in software in the LabVIEW environment and investigated through mathematical modeling using biorthogonal and triorthogonal antenna systems. The obtained results demonstrate the method's high selectivity, enabling reliable separation of signals with different spatial-polarization parameters, and also confirm the high sensitivity of the anomaly coefficient to changes in the signal-to-noise ratio, demonstrating its validity as an informative detection parameter.

Practical significance. The key conclusion of the study was the demonstrated advantage of the developed method over the traditional energy method under polarization mismatch conditions: using the anomaly coefficient allows for a significant reduction in the required signal-to-noise ratio to achieve the desired probability of correct detection. These results confirm the high potential of the proposed method for solving problems of detecting and selecting signals with a dynamic spatial polarization structure, and also open up opportunities for its implementation in modern passive polarization (polarimetric) radars.

The work was carried out with the financial support of a Grant in the form of a research grant from the Committee on Science and Innovation of the Tula Region No. 15 dated June 21, 2024.

Minakov E.I., Antipov N.S., Bogdanovsky S.V., Zyuzin А.V. Method for detecting signals of a dynamic spatial-polarization structure based on the anomaly of polarization parameters // Radioengineering. 2026. V. 90. № 9. P. 108−117. DOI: https://doi.org/10.18127/j00338486-202609-11

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