A.S. Podstrigaev1, D.V. Bondarev2, N.A. Nikolaytsev3, D.A. Gordeev4, A.E. Zaripov5

1-5 JSC “Scientific-Research Institute “Vektor” (St. Petersburg, Russia)

1-5 Saint Petersburg Electrotechnical University «LETI» (St. Petersburg, Russia)

1 ap0d@ya.ru; 2 daabondarev@yandex.ru; 3 Nikolaicev1990@gmail.com; 4 dm_gordeev@mail.ru; 5 artur-zaripov-2001@list.ru

Radar systems have long been widely used in civil aviation, marine navigation, meteorology and defense. In particular, monopulse radar is widely used to determine the angular coordinates of a target. Monopulse radar can be affected by intentional jamming, which reduces the accuracy of measuring the angular coordinates of a target. One of these types of intentional jamming is cross-eye jamming.

Due to the high ratio of "efficiency-complexity of implementation" in solving the problem of radar deflection in a direction, cross-eye jamming has become widespread. Its formation requires high accuracy of the amplitude-phase relationships between the signals emitted by the jammer. This accuracy is ensured by periodic calibration. However, given the typical arrangement of the transmitting antennas of the jammer and the influence of the carrier elements on the amplitude-phase distributions in the antenna apertures, the noted relationships are ensured only in limited sectors. In this regard, the aim of the work is to evaluate the distortion of effective sectors of cross-eye jamming to a radar, taking into account the typical arrangement of transmitting antennas of the jammer and the influence of elements of a typical aircraft carrier. For typical geometric relationships, the effective sectors of cross-eye jamming placement are estimated without taking into account the influence of the aircraft carrier. An increase in the distance to the monopulse radar, the amplitude ratio, the value of the linear base between the emitters and the carrier frequency narrow the effective sector of cross-eye jamming. The graphs in fig. 5 and 6 give an idea of the quantitative dependence of the effective sector on the specified parameters. The modeling of the dependence of the volumetric amplitude patterns of the antenna system's directional characteristics on vertical polarization and the phase difference between two cross-eye jamming transmitters on the direction of radiation in the azimuth and elevation planes was performed, with and without taking into account the F-35A aircraft carrier. It was shown that when taking into account the carrier, the number of effective sectors for setting up cross-eye jamming increases by 1–1.3 times, and their average width narrows by 2.64 – 5 times (figs. 11 and 12). The results of the study provide an idea of the real spatial distribution of effective sectors of cross-eye jamming when placed on a typical aircraft carrier, and also increase the accuracy of assessing the effectiveness of cross-eye jamming and the effectiveness of radar electronic protection.

Podstrigaev A.S., Bondarev D.V., Nikolaytsev N.A., Gordeev D.A., Zaripov A.E. Estimation of distortion of effective sectors of cross-eye jamming to radar taking into account the placement of the jammer on an aircraft carrier. Radiotekhnika. 2025. V. 89. № 9.
P. 145−154. DOI: https://doi.org/10.18127/j00338486-202509-15 (In Russian)

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