STUDY OF THE INFLUENCE OF DIELECTRIC PERMEABILITY OF THE MATERIAL ON THE RADAR COSS SECTION
In the article, a sphere of dielectric material is considered as an object of study of the effective scattering surface, in which the dielectric constant of the medium can be changed during the simulation. A wide range of frequencies was chosen for modeling so that the influence of the ratio of the wavelength to the radius of the sphere, as well as the shift of the maximum RCS value of the object after changing the dielectric constant of the medium, could be tracked. According to the results, it was proved that it is impossible to provide a low RCS level in a very wide frequency band, since if the wavelength becomes close to the body size, a sharp surge in the RCS level occurs. It was also proved during the modeling process that an increase in the dielectric constant of the medium leads to an increase in the maximum RCS of the object, as well as a shift of this peak down in frequency. According to the obtained graphs of a monostatic RCS, it can be concluded that the use of complex frequency-dependent materials allows one to achieve a significant decrease in the effective scattering area even in a situation when the object becomes geometrically large, that is, comparable to the wavelength. These complex materials are used as a stealth coating