UDC 621.396.67.01:621.396.2
EVALUATION OF EFFECTIVE SCATTERING AREA FOR UNMANNED AERIAL VEHICLE
S. N. Razinkov, Dr. Sc. (Phys. and Math.), associate professor, associate professor of the department of automation of control of aircraft (and computer systems) VUNC VVS «VVA», Voronezh, Russia;
orcid.org/0000-0002-3987-0607, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
A. V. Bogoslovsky, Ph.D. (Tech.), deputy head of the department of radio electronics, VUNC VVS «VVA», Voronezh, Russia;
orcid.org/0000-0002-6469-3366, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
D. N. Borisov, Ph.D. (Tech.), associate professor, head of the department of Information technologies, Voronezh State University, Voronezh, Russia;
orcid.org/0000-0002-1265-7195, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
E. V. Syomka, lecturer department of radio electronics, VUNC VVS «VVA», Voronezh, Russia;
orcid.org/0000-0002-0194-6979, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Based on spectral energy equations for transmission and reception of inharmonic wave processes in a radio channel with scattering, estimates for the detection range of medium-altitude unmanned aerial vehicle of «Eitan» aircraft type by radar stations with broadband signals are obtained. The sections of frequency ranges with the highest level of secondary radiation of radar objects are determined and the possibilities of increasing the energy of radar information signals due to the rational choice of antennas with partial directional coefficients that allow achieving maximum efficient moments of radio channels are investigated. Using three-dimensional solid-state and surface parametric design system of Solid Works, a volumetric digital model of unmanned aerial vehicle «Eitan» was created and, based on the results of numerical solution of boundary-value problems in the Altair FEKO electrodynamics modeling computer program, an analysis of its effective scattering area in the C-band was carried out. Based on the results of flight experiments, radar images were obtained, on the analysis of which the background contrast of hull elements was determined and dominant centers of secondary electromagnetic radiation of Eitan unmanned aerial vehicle were identified. The aim of the work is to analyze the reflective properties of unmanned aerial vehicle «Eitan» in the sectors of angles and frequencies and its background contrast during radar surveillance. It is shown that with linear polarization of irradiating and reflected signals in the frequency range of 5.2...5.5 GHz, maximum effective scattering areas of unmanned aerial vehicle «Eitan» reach 0.05 ...0.14 m2 .
Key words: unmanned aerial vehicle, effective scattering area, radio channel energy equation, electrodynamics modeling.