Nguyen Van Cuong1, A.V. Nikolaev2, A.B. Proshin3

1–3 Moscow Technical University of Communications and Informatics (Moscow, Russia)

2 Mechanical Engineering Research Institute of the Russian Academy of Sciences (Moscow, Russia)

1 v.k.nguyen@edu.mtuci.ru, 2 alarmoren@yandex.ru, 3 alex_p77@mail.ru

The detection of low-contrast objects presents a significant challenge in modern radar systems, particularly in complex environments where traditional linear radar methods fall short. This is especially critical in sectors such as defense, security, and environmental monitoring, where accurate target detection under low visibility or signal-to-noise conditions is essential. Conventional radar systems often fail to detect such weakly reflective targets, highlighting the urgent need for advanced nonlinear approaches. This paper introduces an innovative descriptive model of a nonlinear radar link, developed by a group of young Vietnamese researchers under the guidance of A.V. Nikolaev. The model synthesizes theoretical principles from the works of G.N. Sherbakov and K.A. Gallagher, while also addressing practical engineering challenges related to antenna placement on both wheeled and tracked ground vehicles. By accounting for nonlinear effects and real-world deployment constraints, the model enhances the accuracy of maximum detection range estimations for low-contrast targets. The study not only validates the theoretical consistency of the proposed approach but also demonstrates its practical applicability through numerical simulations. Additionally, the paper discusses potential avenues for further model refinement, aiming to improve engineering reliability and operational performance in future radar systems. The results open new directions for optimizing nonlinear detection technologies and broadening their application in real-world scenarios.

Nguyen Van Cuong, Nikolaev A.V., Proshin A.B. Comparison of methods for determining the angular coordinates of objects in the ground using a nonlinear radar station. Electromagnetic waves and electronic systems. 2025. V. 30. № 3. P. 85−93. DOI: https://doi.org/10.18127/j15604128-202503-10 (in Russian)

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