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DETECTION OF RADAR TARGETS ON THE BACKGROUND OF ACTIVE INTERFERENCE BY THE DETECTOR OF THE POLARIZATION MATTER OF THE SCATTERING
DOI: 10.36724/2072-8735-2020-14-9-4-9
Valery Yu. Pozdyshev, scientific and technical center for aerospace defense «Concern AD «Almaz-Antey», Moscow, Russia, pozvalerij@yandex.ru
Sergey V. Yakubovskiy, scientific research testing center of the central scientific research institute of aerospace defense forces of the Ministry of Defense of the Russian Federation, Moscow, Russia, yakubovskiy@mail.ru
Alexey V. Zyuzin, Federal Educational institution of higher professional education «Yaroslavl Higher Military Institute of the Air Defense» of the Ministry of Defense of the Russian Federation, Yaroslavl, Russia, aleksey.zyuzin@mail.ru
Alexander V. Timoshenko, open joint-stock company «Radio Engineering Institute named after A.L. Mints», Moscow, Russia;
National Research University of Electronic Technology, Moscow, Zelenograd, Russia, u567ku78@gmail.com
Abstract
The article discusses the possibility of detecting radar targets moving under the cover of active noise masking interference, acting along the main lobe of the antenna system’s radiation pattern, and also using self-covering noise. It is shown that in radar stations with full polarization sounding of the space and measurement of the polarization scattering matrix (PSM), it is possible to synthesize a decisive rule for target detection against active noise-free correlated interference. This synthesis is possible on the basis of the determinant of the polarization scattering matrix, the value of which has the properties of invariance to the form of the polarization scattering vector. The analysis of the determinant of the polarization scattering matrix in the conditions of measuring its elements against the background of active interference makes it possible to identify differences in the values of the determinant under conditions of presence and absence of a target in the volume of space allowed by the radar system. In this case, the value of the determinant becomes the main information feature. A distinctive feature of the detector is the invariance to the form of the polarization scattering vector. The detector synthesis is based on differences in the signals of the secondary and primary radiation, which appear at the output of the PSM meter, namely, on the properties of the determinant of the polarization matrix of the scattering of the object and the signal received from the source of active interference. The purpose of the article is to illustrate the differences in the properties of the polarization scattering matrix at the output of the PSM meter in the presence of active interference and / or a useful signal, as well as the possibilities of using the existing differences in the properties of PSM and their estimates in the presence of active interference for the synthesis of a radar detector.
Keywords: polarization scattering matrix, radar, detection against active interference, full polarization sounding of space, decisive rule, determinant of the polarization scattering matrix.
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Information about authors:
Valery Yu. Pozdyshev, Dr. Sc. (Eng.), associate professor, head of the research department, scientific and technical center for aerospace defense «Concern AD «Almaz-Antey», Moscow, Russia
Sergey V. Yakubovskiy, Dr. Sc. (Eng.), associate professor, head of department, scientific research testing center of the central scientific research institute of aerospace defense forces of the Ministry of Defense of the Russian Federation, Moscow, Russia
Alexey V. Zyuzin, Dr. Sc. (Eng.), professor, head of the physics department, Federal Educational institution of higher professional education «Yaroslavl Higher Military Institute of the Air Defense» of the Ministry of Defense of the Russian Federation, Yaroslavl, Russia
Alexander V. Timoshenko, Dr. Sc. (Eng.), professor, head of the integrated department — deputy general designer open joint-stock company «Radio Engineering Institute named after A.L. Mintsa», Moscow, Russia; National Research University of Electronic Technology, Moscow, Zelenograd, Russia