Tag Archives: CAD

THE DEVELOPMENT OF A SUBSYSTEM OF CAD FOR THE ANALYSIS OF SCATTERING PROPERTIES OF OBJECTS WITH ABSORBING COATINGS BASED ON FACETED MODELS

UDC 621.396

Abbas Jassim Hussey, A. P. Preobrazhensky

This paper considers the problem of scattering of electromagnetic waves on the object, which is a plate coated with an absorptive coating. The system of integral equations was recorded, which allows us to associate a density potential, Green’s function and the incident electromagnetic wave. After solving the system of equations based on the method of moments were calculated values of the effective area of the dispersion under certain conditions of observation. Based on the view object, that use the facet model and gives suggestions for characteristics of a subsystem of CAD, in which you can carry out the design of objects with the required values for the levels of scattered electromagnetic fields were obtained. As input to this subsystem can be used the sizes of the facets, the sector angles, the required level for the characteristics of scattering of radio waves.

Keywords: scattering of radio waves, facet model, CAD, radar cross section, absorption of radio waves.

Full text:
AbbasPreobrazhensky_2_17_1.pdf

THE ANALYSIS OF APPROXIMATE MODELS FOR ESTIMATING THE AVERAGE CHARACTERISTICS OF THE SCATTERING DIFFRACTIVE STRUCTURE

UDC 621.396

A. G. Yurochkin, A.V.Danilova, I.A.Gusarova

This paper analyses the possibilities of how to apply the approximate model in order to assess the average characteristics of the scattering object. The exact approach is based on the method of integral equations, and an approximate model based on the combination of the method of edge waves and the physical optics approximation. The object is represented in the form of separate components. It is shown how the defined sector angles, given the framework of specific errors. Based on how aggregated information on the elements of an object given suggestions on how to build a subsystem of CAD in order to design the average characteristics of the objects. As a test data for the subsystem are selected dimensions of the elements and sector angles, the required levels for the average characteristics of the scattering.

Keywords: communication, diffraction, wave propagation, design, CAD, diffraction structure.

Full text:
YurochkinDanilovaGusarova_2_16_1.pdf

THE PROPOSALS FOR THE DEVELOPMENT OF SUBSYSTEMS OF ANALYSIS AND SYNTHESIS OF THE ELEMENTS OF RADIOCOMMUNICATION SYSTEMS

UDC 621.396

A.A.Golovin, Y.A.Mishin, E.S.Zatsepin

In the paper the suggestions are given for the structure of subsystems that can be used for designing elements of radiocommunication systems. As a basis of mathematical support subsystems appropriate methods are shown.

Keywords: system of radio communication, design, methodology, CAD.

Full text:
GolovinMishinZacepin_2_14_1.pdf

THE CONSTRUCTION OF COMBINED ALGORITHM FOR CAD DIFFRACTION STRUCTURES

UDC 621.396

I.V.Kryuchenko

The methods are analyzed, that enabling the analysis of scattering characteristics of objects of complex shape. The structure of subsystem of CAD, on the basis of which it is possible to process optimization and forecasting of the characteristics of interest is devloped.

Keywords: scattering of radio waves, optimization, forecasting, CAD.

Full text:
Kruchenko_2_14_1.pdf

THE CHARACTERISTICS OF PROTOCOLS IN MESH-NETS

UDC 621.396

A.P. Preobrazhensky

The paper deals with the design features of the diffraction objects in an example of hollow structures. The main characteristics that are important in practice are shown. The structure of the module for the design of hollow structures is given, its constituent components are described.

Keywords:  : CAD, hollow structure, characteristic, scattering of radio waves.

Full text:
Preobrazhensky_1_15_1.pdf

THE CONSTRUCTION OF MODULE FOR CALCULATION MOBILE COMMUNICATION SYSTEMS

УДК 621.396

A.P. Preobrazhensky

This paper considers the model to calculate the wireless communication system based on the ray method. It is proposed to supplement the basic calculation model based on the ray method, another methods allowing to take into account features of objects or clarify propagation characteristics. The structure of the module design of a wireless communication system is given.

Keywords:  : CAD, wireless communication, radiation method, physical optics, the method of integral equations.

Full text:
Preobrazhensky_1_15_2.pdf