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Information × Registration Number 0220U101138, 0117U004965 , R & D reports Title Methods and algorithms for calculation of electromagnetic scattering wideband characteristics on complex shape objects for its radar visibility determining popup.stage_title Head Легенький Максим Миколайович, Registration Date 03-02-2020 Organization V.N. Karazin Kharkiv National University popup.description2  The object of the study - are the characteristics of the electromagnetic field, scattered by complex form bodies. The purpose of the work - is to create new and improve the existing methods of numerical simulation of impulse wave scattering, in particular waves of the radar range, on objects of complex shape. Research Methods - for the calculation of wave scattering on a complex shape object the SBR (Shooting and Bouncing Rays) method is used in conjunction with the methods of physical and geometrical optics for monochromatic and pulsed fields, also with methods of integral transformations for transformation of formulae from time domain to Fourier (or Laplace) domain and vice versa. Results: the application of the FDTD method for the analysis of electromagnetic wave diffraction on complex objects, in particular objects that are large in comparison to the wavelength and objects with complex geometry are considered. A computer program was developed to analyze the diffraction of impulse signals on an azimuthal periodic lattice located in the cross-section of an empty dielectric waveguide, and analyze the physical effects of such diffraction on different lattice structures. Formulas were obtained to calculate the diffraction of impulse and monochromatic signals on a complex object whose surface is represented by facets. Effective techniques are proposed to take into account the effect of the absorbing coating (in particular in the form of a cloack) in the time and frequency domain Product Description popup.authors Butrym Oleksandr Yu. Vinnichenko Sergey O. Maslovskiy Alexander A. Khrychov Vladyslav S. popup.nrat_date 2020-04-02 Close