The Technique of Calculation of Scattering Characteristics of Objects in the Given Range of Wave Lengths

Abstract

One of the important problems when designing the scattering properties of the objects, techniques, and electromagnetic compatibility is an experimental study of the radar characteristics in the given range of wave lengths. In the paper the technique was given of calculation of radar characters for objects in the range of wavelengths on the basis of experimental data of scattering features of object is researched. We consider the case of linear scattering of electromagnetic waves. The examples was given for the case of E-polarization of incident plane wave. We calculated the scattering properties of two-dimensional cavity with a certain aperture size (which represents an anisotropic object) and two two-dimensional cylinders, considered as isotropic objects, which are located at a certain distance. It was shown that the bandwidth in which we can calculate radar characteristics is increases proportionally with the increase of radius of the cylinder, that is, the larger the radius of the cylinder, the wider the wavelength range in which it is possible to predict its radar characteristics. For the perfectly conducting cavity it was shown that the possible wavelength range forecasting in bistatic case is much wider than in the monostatic case. We can meet some restrictions on the quantity in the measuring tools of frequency channels and the number of selected values of working hours that at which the radar measurement is made. Therefore, the actual problem of calculating radar within the range of wavelengths on the results of experimental studies of the scattering properties of these objects on the same wavelength belonging to the interval must be solved.