THE SIMULATION OF RADIO WAVE SCATTERING ON OBJECTS WITH COMPLEX SHAPE BASED ON THE METHOD OF INTEGRAL EQUATIONS AND THE “ANT ALGORITHM”
A. P. Preobrazhensky
The modern electrodynamic objects included in the antenna systems are characterized by a complex structure and many parameters. This determines the use of appropriate methods allows the synthesis of such objects. This paper proposes the structure of the subsystem of the analysis of the diffraction structures of the antenna system. The analysis is based on two approaches. The first of them is based on the method of integral equations, with its use is the calculation of the scattering parameters. The integral equation is solved based on the method of moments. The second one is based on the combination of ant algorithm and grid method. For a possible range of values of the characteristic dimensions of the investigated object was used by grid method with successive narrowing of the field determined values. For each plot mesh, we used the ant algorithm. In the analysis of the characteristics of an object of complex shape, we represent it as a set of multiple reflectors, which do not interact. General characteristics of the scattering depend on the values of the scattering characteristics of each reflector, and the phase difference on incident electromagnetic waves. Carried out split sector angles for a number of sectors. Revealed the characteristic dimensions of the object for which the criterion specifies how should be distributed the average values of the scattering parameters for some of the sections of angle. The results can be useful for design of dynamic objects with the specified requirements in terms of the scattering parameters.
Keywords: electrodynamic structure optimization, the method of integral equations, the ant algorithm.