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Doklady BGUIR

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No 3 (2019)
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ELECTRONICS, RADIOPHYSICS, RADIOENGINEERING, INFORMATICS 

5-11 386
Abstract

The electrochemical alumina technology (ELAT) for the formation of heat-conducting aluminum substrates with a dielectric layer of anodic aluminum oxide with breakdown voltages above 6 kV is discussed. The developed technology can be used in the production of any electronic device operated in the temperature range from 10 to 473 K and frequencies of the gigahertz range.

12-24 438
Abstract

Integrated studies completion of BCH codes of different lengths is devoted. Most attention is paid to codes whose lengths are intermediate between primitive lengths, which are obtained by throwing in a special way from the check matrices of primitive BCH codes of a large number of columns, but with preservation of cyclical properties, which are proposed to be called non-primitive BCH codes. The properties of the named code class are systematically investigated. It is proved that, according to the variety of lengths, about a third of the non-primitive BCH codes have a code distance greater than constructive, and, therefore, they are able to correct random errors, the multiplicity of which significantly exceeds the constructive frame. Correction of such errors is called plus-decoding. It is shown that it is impossible to implement plus-decoding by known classical methods and algorithms, but only by the available and developing means of the theory of norms syndromes. Two algorithms for the implementation of plus-decoding by permutation normal methods are proposed. Non-primitive BCH-codes are promising for applications in real modern information and communication systems.

25-36 449
Abstract

The urgency of the problem efficiency increasing of coding of the multi-view images for transmission over radio channels in mobile video surveillance systems and the need to develop methods, algorithms and specialized compression codecs with acceptable computational complexity are shown. The segmentation place in the object-oriented coding of multi-view images is determined. Expressions for the relative evaluation of the computational complexity of segmentation algorithms and object-oriented coding of multi-view images are proposed. It is shown that tree-wave segmentation and nodal quad-grids use reduces the computational complexity of object-oriented coding of multi-view images and, accordingly, reduces the delay in their transmission in mobile video surveillance systems.

37-41 503
Abstract

The results of synthesis and investigation of the film structures, prepared with the sol-gel method in BSUIR, are summarized. The peculiarities of synthesis and optical properties xerogels doped with lanthanides in matrices with macro- and mesoporous silicon, porous anodic alumina and synthetic opals are discussed. The possibilities of application the xerogel films for the structures of nanophotonics and microelectronics on the basis of results of PhD theses, defended within the projects of laboratory 4.5 «Nanophotonics» at BSUIR are discussed.

42-50 2557
Abstract

The analysys of the problem of ensuring compatibility of computer systems was carried out. The basic principles underlying the OSTIS technology, one of the tasks of which is the solution of this problem was discussed. Special attention is paid to the principles of semantic associative computers construction, which are the hardware basis for the interpretation of systems developed on the basis of this technology.

51-56 394
Abstract

The analysis of the main methods of routing information flows in telecommunication networks was carried out. It based on multicriteria requirements for delay, delay variation, loss probability and bandwidth taking into account the cost minimization of information transmitted. The possibility of optimal routing is considered by introducing a single complex weighting factor. The main directions for further development of QoS routing are described.

57-64 410
Abstract

The new results in the analysis of the multidimensional data received in the BSUIR in the area of the polynomial regression analysis are discussed. The statement of the problem of the regression analysis under conditions of the multidimensional-matrix input and output variables and the polynomial regression function is formulated. The solution to the problem in the form of the system of the linear equations relatively the unknown parameters is given. The properties and distributions of the estimations of the parameters of the affine regression function are investigated, that allow testing hypothesizes about the parameters. The computer simulation confirming the theory is performed.

65-69 432
Abstract

Various methods for generating controlled random tests and their disadvantages are considered. Various numerical metrics are proposed and analyzed to construct multiple controlled random tests. The effectiveness of applying the Euclidean distance for the formation of multiple controlled random tests is substantiated and confirmed by experimental studies.

70-75 394
Abstract

Diodes Schottky characteristics, sensors of liquid media and principal aspects connected with bioresonans effects are described.

76-88 2761
Abstract

The technique for step-by-step computer-based analysis and diagnostics of electromagnetic compatibility (EMC) of radioequipment of complex on-board and local ground systems is improved. At the first stage of the analysis and diagnostics of EMC, all potentially dangerous paths of interference propagation are identified with the use of the broadband analytical worst-case model developed within IEMCAP program; the model allows to calculate spurious couplings between antennas of radioequipment. At the second stage, improved worst-case models for the potentially-dangerous interference propagation paths identified before development, and EMC analysis is performed iteratively on the basis of the refined models. The final stage is the discrete nonlinear EMC analysis, which is made using the high order nonlinearity models and radioreceivers' selectivity models obtained on the basis of the results of double-frequency testing of radioreceivers. The use of the developed technique makes it possible to achieve high efficiency of EMC analysis; this is proved by performing diagnostics of EMC for real-world on-board and local ground systems containing a set of HF, VHF, UHF and SHF radio equipment.



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ISSN 1729-7648 (Print)
ISSN 2708-0382 (Online)