THE PREDICTING OF SCATTERING CHARACTERISTICS FOR METAL OBJECTS WITH ABSORBING COMPONENTS IN THE FREQUENCY RANGE
A. A. Zhilina, V. N. Kostrova
The research urgency is caused by the fact that in the modern dynamic systems modeling and design, researchers do not always have information about its functioning in a given frequency range. This article discusses the technique of prediction of radar characteristics (RС), metal objects containing absorbing components in a certain frequency range, using the information on the scattering properties of the components of these objects. A leading approach to the study of this problem is the use of the apparatus of the green’s function. Scattered electromagnetic field is calculated on the basis of the method of integral equations. When accounting for the absorbing components used impedance boundary conditions. Examples are given of prediction RС in the case where the object falls E-polarized plane electromagnetic wave. Was carried out approximation of the scattering parameters in a given sector of angles based on algebraic polynomial, given the coefficients of the polynomial. The algorithm was developed for the synthesis of the size of the object based on the data predict the levels of electromagnetic waves. Given the dependence of the prediction error values of the electromagnetic field of the frequency bands. The materials of the article are of practical value to professionals associated with the development of complex electrodynamic structures.
Keywords: scattering of electromagnetic waves, predicting, acquisition, frequency analysis, synthesis.