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 Contents and abstracts

 

RADIO ENGINEERING AND COMMUNICATION SYSTEMS

BANDWIDTH CAPACITY OF UNDERWATER WIRELESS OPTICAL TELECOMMUNICATION CHANNEL WITH PULSE-CODE MODULATION BY INTENSITY

Autors: S. N. Kirillov, L. V. Aronov.

Key words: underwater optical wireless communication channel, optical communication, free space optical channel, mathematical model, underwater communications systems.

DOI: 10.21667/1995-4565-2020-74-3-13

REDUCING DISTANCE MEASUREMENT ERROR BY RANGE METER WHEN USING TRANSMITTER CARRIER FREQUENCY ADJUSTMENT

Autors: V. S. Parshin, N. S. Zaigrov.

Key words: radio range finder, difference frequency signal, interfering reflector, distance estimation, distance estimation error, spectral density, estimation error minimization, frequency domain interference compensation, time domain interference compensation.

DOI: 10.21667/1995-4565-2020-74-14-22

ADAPTIVE APPROXIMATION ALGORITHM TO OBTAIN TARGET RADAR IMAGE

Autors: A. V. Safonova, V. I. Martynov.

Key words: ultra-wideband signal, radar image, Doppler algorithm, back-projection algorithm in frequency domain, maximum correlation algorithm, adaptive approximation algorithm.

DOI: 10.21667/1995-4565-2020-74-23-33

EXPANDING POSSIBILITIES TO APPLY BLOCK VITERBI ALGORITHM

Autors: V. V. Zolotarev.

Key words: error-correction coding, block Viterbi algorithm, convolutional codes, block codes, quasi-cyclic codes, decoder complexity, concatenation.

DOI: 10.21667/1995-4565-2020-74-34-41

MATHEMATIC AND SOFTWARECOMPUTER SYSTEMS
AND COMPUTER NETWORKS

PARALLEL MULTIPLICATION OF LARGEDIMENSIONAL MATRICES ON MANY GIVEN PROCESSORS

Autors: V. M. Glushan, O. I. Krasyuk, A. Yu. Lozovoy.

Key words: partitioning of matrices into blocks, block multiplication, parallelization, clientserver architecture.

DOI: 10.21667/1995-4565-2020-74-42-55

INTELLIGENT INFORMATION SYSTEMS AND TECHNOLOGIES

DATA MODEL BASED ON EXTENSIBLE STRUCTURE FOR INFORMATION SYSTEMS OPERATING IN DYNAMIC EXTERNAL ENVIRONMENT

Autors: V. I. Oreshkov, I. A. Tsepulin.

Key words: information system, analytical query, data warehouse, databases, data model, subject area, business key.

DOI: 10.21667/1995-4565-2020-74-56-64

NEURAL NETWORK METHOD FOR DATA RECOVERY IN INFORMATION SYSTEMS

Autors: A. D. Obukhov, M. N. Krasnyanskiy.

Key words: missing data recovery, neural networks, machine learning, ensemble of neural networks, set theory, adaptive information systems, neural network method.

DOI: 10.21667/1995-4565-2020-74-65-72

APPLICATION OF LINEAR PROGRAMMING TO MANAGE THE PROCESS OF DISTRIBUTING LOAN APPLICATIONS FOR OPTIMIZEDBUSINESS PLAN EXECUTION

Autors: K. G. Gumenyuk, A. N. Pylkin.

Key words: linear programming, linear programming problem, commercial bank, credit product, business plan, credit department, credit, bank guarantee, mathematical calculation, information systems.

DOI: 10.21667/1995-4565-2020-74-73-79

SYSTEM ANALYSIS, MANAGEMENT AND INFORMATION PROCESSING

REGRESSION ANALYSIS METHODS IN TRAJECTORY INFORMATION PROCESSING FOR ROCKET AND SPACE TECHNOLOGY PRODUCTS

Autors: А. А. Bogdanov, S. V. Spitsyn, S. A. Tikhomirov.

Key words: information and measurement support of launches, systems of measurement information gathering, onboard navigation consumer equipment, telemetry information, linear regression.

DOI: 10.21667/1995-4565-2020-74-80-88

ALGORITHM FOR IDENTIFICATION OF SPATIAL OBJECTS ON PICTURES FOR DIFFERENT TIME INTERVALS AND ON VARIOUS SCALES BASED ON THREE-DIMENSIONAL BARCODES

Autors: Y. A. Kovalev.

Key words: three-dimensional barcode, persistent homology, topology, spatial objects.

DOI: 10.21667/1995-4565-2020-74-89-98

ALGORITHM FOR TWO-STAGE CALIBRATION OF CAMERAS WITH SMALL ANGULAR DIMENSIONS OF FIELDS OF VIEW INTERSECTION

Autors: I. A. Kudinov, M. B. Nikiforov, I. S. Kholopov.

Key words: camera calibration, Levenberg – Marquardt optimization algorithm, projective camera, matrix  f camera internal parameters, distortion, Brown – Conrady model, Perspectiven-Point problem, panoramic image.

DOI: 10.21667/1995-4565-2020-74-99-107

REFITTING PID REGULATOR FOR UNSTABLE OBJECTS WITH LAGS INTO FILTERED SMITH PREDICTOR

Autors: A. I. Bobikov, T. S. Bubnova.

Key words: object with delay, unstable object, Smith predictor, PID controller, filter.

DOI: 10.21667/1995-4565-2020-74-108-118

PHYSICAL ELECTRONICS AND NANOELECTRONICS

MATHEMATICAL MODELING OF STRUCTURAL ELEMENTS АТ MAGNETIC-HYDRODYNAMIC MIXING SYSTEM FOR SILICON MELT IN EXPERIMENTAL SYSTEM OF DIRECTIONAL SOLIDIFICATION

Autors: E. V. Slivkin, S. M. Karabanov, D. V. Suvorov, D. Yu. Tarabrin, N. V. Makarova.

Key words: mathematical modeling, silicon, magnetic-hydrodynamic mixing, ferromagnetic screen.

DOI: 10.21667/1995-4565-2020-74-119-128

INVESTIGATION OF SILICON NITRIDE AS A MASK FOR COPPER PLATED GRID OF HETEROJUNCTION SILICON SOLAR CELLS

Autors: М. А. Reginevich, S. M. Karabanov, V. E. Bugrov.

Key words: silicon crystalline solar cells, hetero-junction solar elements, amorphous silicon layers, silicon nitride, femtosecond laser pulse, galvanic copper deposition.

DOI: 10.21667/1995-4565-2020-74-129-135

LOW VACUUM PHOTOELECTRIC MANOMETER BASED ON LIGHT REFRACTION CONTROL IN PMI-2 SENSOR

Autors: V. A. Korotchenko, V. E. Skvortsov, V. K. Bazylev, V. V. Praded, A. M. Zhidkov.

Key words: manometer; gas pressure; low vacuum; light refraction; gas-refraction index; laser; photocell; vacuum sensor.

DOI: 10.21667/1995-4565-2020-74-136-143

STUDYING IONIZATION GAUGE FOR ULTRAHIGH VACUUM

Autors: V. K. Bazylev, V. A. Korotchenko, A. M. Zhidkov, V.E. Skvortsov.

Key words: ultrahigh vacuum; ionization gauge; manometric sensitivity of ionization gauge, axial magnetic field; electron motion; secondary electron emission; soft x-ray radiation; computer simulation.

DOI: 10.21667/1995-4565-2020-74-144-152

OPTIMIZING THE TECHNIQUE FOR IN-VIVO ABSORBED DOSE RATE MEASUREMENT USING SMALL-SIZED SCINTILLATION DETECTORS

Autors: I. N. Abalakin, V. T. Samosadny, A. M. Medvedkov, A. V. Sumin.

Key words: in-vivo dosimetry, scintillation detectors, gamma-therapeutic complex AGAT-VT, Vavilov-Cherenkov effect, 3D dose field analyzer, signal temperature dependence, sensitivity angular anisotropy, PSD radiation degradation.

DOI: 10.21667/1995-4565-2020-74-153-164