B. G. Tatarsky1, I. V. Tolstoy2
1 JSC «Concern «Vega» (Moscow, Russia)
1, 2 Moscow Aviation Institute (National Research Institute) (Moscow, Russia)
2 JSC «NIIMA «Progress» (Moscow, Russia)

1 boris-tatarsky@inbox.ru, 2 Ivantolstoi322228@gmail.com

The article is devoted to important issues of radar aimed at increasing the radar resolution in angular coordinates using the principle of synthesizing an artificial antenna aperture. A distinctive feature of the problem under consideration is that the principle of synthesizing the antenna aperture is implemented with the distributed principle of radar construction. According to this principle, it is assumed that the radar is a set of receiving and transmitting modules, spaced apart relative to each other. In this case, the carrier of the distributed radar moves along a rectilinear trajectory towards the target. Reception of the reflected signal from the target, which is considered a point, during the observation time (trajectory signal) is carried out by each control point, and processing of the trajectory signals generated at each receiving point is carried out jointly.

The purpose of the article is to evaluate the capabilities of a distributed radar by angular resolution in the azimuth plane (linear azimuth scale), carried out in relation to its single-position version.

Analytical expressions have been obtained for trajectory signals at spaced reception points, from which it follows that the perceived signals are linearly frequency modulated. The joint processing of these signals has shown that the duration of the output response of the optimal processing system in this situation becomes narrower compared to a similar signal at a separate receiving point of a distributed radar. The computer simulation confirmed the result obtained: the duration of the output response during joint processing of trajectory signals is less than the same duration of the output signal of the processing system at a separate radar reception point. The results obtained indicate that the joint processing of trajectory signals in a distributed radar using the synthesis principle makes it possible to increase the resolution of the radar along the angular coordinate (linear azimuth scale).

Tatarsky B.G., Tolstoy I.V. Features of antenna aperture synthesis in distributed radar // Antennas. 2026. № 4. P. 86–92. DOI: https://doi.org/10.18127/j03209601-202604-09

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