2687-0517 Computing, Telecommunication and Control 12 4 2019 1-161
RAR RUS 7-19 Peter the Great St.Petersburg Polytechnic University Popov Sergey popovserge@gmail.com
Polytechnicheskaya, 29, St.Petersburg, 195251, Russia
 IBS Expertise Ponomareva Elena eponomareva@ibs.ru Peter the Great St.Petersburg Polytechnic University Samochadin Aleksandr Samochadin@soft-consult.ru
Polytechnicheskaya, 29, St.Petersburg, 195251, Russia
 Researching a strategy widget in the business analysis interactive system The article discusses approaches to solving problems of interactive strategy and business analysis with forecasting elements. The aim of the study is to solutions to problem that arise when developing a widget for interactive strategy and business analysis with forecasting elements for goverment and commercial organizations. The result is a widget for interactive strategy and business analysis with forecasting elements. The article discusses the analogues, describes the technology for creating a widget, to realizes the widget, and also studies the dependence of the display time of widget and widget elements entirely on the number of strategic goals and indicators in modern web browsers. 10.18721/JCSTCS.12401 004.652.4 business intelligence system architecture widget web client interactive strategy interactive panels application architecture https://infocom.spbstu.ru/article/2019.63.1/ 7-19.pdf
RAR RUS 20-28 Omsk State Technical University Fateeva Anna fateewa16@rambler.ru
Omsk, Russian Federation
 Frequency-independent method of digital calibration of ADC channels digital signal processing devices In the work, a description is given of a method for temporarily compressing signals when several ADCs are connected in parallel. The digital channel calibration method is based on an advanced least-squares method. An algorithm based on the recursive least squares method is used to adjust the offset of the reference voltage and gain. An advantage of the proposed method on the basis of an iterative algorithm is high speed and high accuracy of tuning the ADC channels in comparison with the method based on the least squares method. To implement the «averaging» procedure, a numerical method for Euler integration is proposed. The proposed calibration method is frequency independent and has the same efficiency in the entire input signal band. The results of simulation modeling are presented, including a spectral analysis of the output signal before and after calibration. 10.18721/JCSTCS.12402 621.396.7 digital receiving device receiver bandwidth timedivision multiplexing jitter aperture error https://infocom.spbstu.ru/article/2019.63.2/ 20-28.pdf
RAR RUS 29-44 Peter the Great St. Petersburg Polytechnic University Levchenko Aleksei levchenko_av@spbstu.ru
St. Petersburg, Russian Federation
 A hybrid non-uniform loop tiling for supercomputers with deep memory hierarchies Non-uniform nature of multi-level memory architectures of modern supercomputers represents a notably underestimated issue in design of loop transformation algorithms. The imperfect compiler support for architectural features of deep memory hierarchies results in insufficient data locality, which in turn is an obstacle to achieving performance portability for a wide range of important computational kernels like iterated stencils or sparse-matrices. The major contribution of this paper is an algorithmic skeleton for hybrid non-uniform loop tiling. The proposed approach combines locality-enhancing features of polyhedral compilation framework with capability of non-uniformity effects modeling via hierarchical parameterized tiling strategy performed in a canonical syntactic manner. The polyhedral stage focuses on spatial and temporal locality prioritization along with end-to-end optimization pipeline. At the syntactic stage the parameterized loop tiling strategy allows an automatic definition of tiled loop characteristics to map it according to the hierarchical memory architecture. The tiles with various parameters like size, shape and form can be generated through the novel permutational target-specific algorithms. As a result, the variants of acoherent non-uniform loop tiling algorithm were designed on the basis of the proposed approach to evaluate the permutational techniques of tile size and tile shape selection. The early-stage experimental results are presented to show the effects of hybrid non-uniform tiling on data locality to deliver near-optimal performance portability for representative benchmarks across deepening memory hierarchies of multi-machine macronodes. 10.18721/JCSTCS.12403 004.4'416:004.382.2 compiler optimizations data locality hierarchical tiling loop optimizations multi-level memory hierarchy performance portability polyhedral model https://infocom.spbstu.ru/article/2019.63.3/ 29-44.pdf
RAR RUS 45-57 Vologda State University Ulitin Anatoly ulitko_onotole@mail.ru
Vologda, Russian Federation
 Peter the Great St. Petersburg Polytechnic University Smirnov Artem smirnov.artem.a@yandex.ru
St. Petersburg, Russian Federation
 Software package for managing material resources of sheet метаl with elements of DSS At engineering enterprises, where a significant share of material costs are the sheet metal costs, the rational use of the sheet metal material resources has an influence on the technological costs and other technical and economic indicators of the enterprise operating activities. That is why the question of increasing a sheet metal utilization rate is relevant at the engineering enterprises. In order to solve this question, the using of rational cutting methods of sheet metal and the using of sheet metal residues after cutting in following technological processes are researched in the work. The objective of the research is to develop a software package, which includes a decision support system, for managing of sheet metal material resources. The DSS will help in operational making of rational cutting cards and in operational and substantiated sorting of the cutting residues into business and non-business ones. The software package will allow increasing the sheet metal utilization rate. Requirements for the software are presented, its structure is described, the features of its construction based on interacting CAD/CAM and ERP-systems are formulated, the algorithms of individual software modules and these practical implementation are proposed in the article. 10.18721/JCSTCS.12404 004.896 sheet metal cutting material utilization rate business residues of sheet metal DSS CAD CAM ERP https://infocom.spbstu.ru/article/2019.63.4/ 45-57.pdf
RAR RUS 58-71 Rashich Andrey rashich@cee.spbstu.ru Peter the Great St. Petersburg Polytechnic University Gorbunov Sergey serggv91@gmail.com
St. Petersburg, Russian Federation
 Iterative receiver of SEFDM signals in fading channels An iterative receiver of SEFDM signal for the case of fading channel is proposed. The algorithm is based on the BCJR algorithm demodulator and soft decision decoder of convolutional code. Also the equivalent representation of SEFDM as OFDM with reduced number of subcarriers is used for equalization. The proposed algorithm provides small BER with relatively small energy loss compared to equivalent OFDM system. A study of SEFDM signals behavior in frequency selective fading channel is done. The proposed algorithm have computational complexity linearly increasing with the number of subcarriers and are applicable for any number of subcarriers in the multicarrier signal. 10.18721/JCSTCS.12405 621.391.8 OFDM NOFDM SEFDM Multicarrier FTN 5G BCJR fading channels https://infocom.spbstu.ru/article/2019.63.5/ 58-71.pdf
RAR RUS 72-83 Military Academy of Communications named after Marshal of the Soviet Union S.M. Budenny Borobov Anton antonborobov@yandex.ru
St. Petersburg, Russian Federation
 Borodulin Roman Method for assessing intermodulation interference of a group of medium-power radio stations The article presents a methodology for assessing intermodulation interference at the input of one of the receivers of a group of medium-sized radio stations. This technique is based on determining the powers of interfering signals at the terminals of the receiving antenna by calculating the nodal potentials. Nodal potentials differ from ordinary ones in that they are not inside the segments into which the wire is divided, but at the junctions of the conductors, including the load. For calculations, a computational scheme based on the method of moments is used. As an object of study, a group of radio stations consisting of two hardware stations is considered. The authors presented an algorithm for calculating the power of intermodulation interference, counted to the input of the receiver. Using this algorithm, based on the reference data, a numerical simulation of the interference situation in the area of the object is performed. It is proved that the presented method allows us to simplify the task of calculating the power in the load of the receiving antenna, as well as expand the scope of known methods for evaluating the interference environment. 10.18721/JCSTCS.12406 621.396.67 electromagnetic compatibility intermodulation interference decoupling of antennas a group of medium-sized radio stations interference environment method of moments https://infocom.spbstu.ru/article/2019.63.6/ 72-83.pdf
RAR RUS 84-96 All-Russian Scientific Research Institute of Radio Equipment Berezniak Anatoliy baf1954@mail.ru
St. Petersburg, Russian Federation
 E-4229-2017 7103063234 0000-0001-8407-6528 Peter the Great St.Petersburg Polytechnic University Alexander S. korotkov@rphf.spbstu.ru
Polytechnicheskaya, 29, St.Petersburg, 195251, Russia
 Design method and manufacturing monolithic microwave integrated circuit switches on GaAs рНЕМТ This paper proposes a new synthesis method for design of solid-state microwave switches. The synthesis method based on the design of a prototype low-pass filter. By implementing successive frequency transformations and circuit conversions, a switch topology obtained. The effectiveness of the method is demonstrated by manufacturing a monolithic GaAs рНЕМТ SPDT switch of C-band. 10.18721/JCSTCS.12407 621.316.543.1 design method microwave switch А3В5 GaAs рНЕМТ SPDT https://infocom.spbstu.ru/article/2019.63.7/ 84-96.pdf
RAR RUS 97-110 Peter the Great St. Petersburg Polytechnic University Beliaevskii Kirill kirill.beliaevskii@spbpu.com
St. Petersburg, Russian Federation
 Generating octrees from the point cloud in conditions of limited random access memory volume Laser scanning is a modern and actively developing remote sensing method. Laser scanning results are represented by point clouds, which can contain not only the coordinates of each point, but also the color of the points and other attributes. One of laser scanning technology features, which caused its popularity, is the ability to obtain a sufficiently dense cloud of points. Thanks to this function, laser scanning allows you to determine the digital representation of the geometry of the scanned object with high accuracy. In some cases, point clouds can contain billions of points that require hundreds of gigabytes of data storage. Loading and processing such enormous amounts of data requires significant time and computational resources. A common approach is to build an octree to speed up the spatial search operations and group points close in space. Using such an octree together with external memory opens the possibility of limiting the amount of RAM consumed. This article presents the method of an octree generating using a two-tier cache system for caching sections of the point cloud. The method of organizing the process of data structure building is proposed, and the approach to the analysis of the proposed method efficiency on the basis of a computational experiment is given. The results of the proposed method efficiency analysis are presented. 10.18721/JCSTCS.12408 004.021 three-dimensional scanning point cloud data structures octree memory consumption caching performance measurement https://infocom.spbstu.ru/article/2019.63.8/ 97-110.pdf
RAR RUS 111-122 Glazunov Vadim neweagle@gmail.com Chuvatov Mikhail misha@iktp.spbstu.ru Chernyshev Alexandr alexander.tchernyshev@mail.ioffe.ru Peter the Great St.Petersburg Polytechnic University Kurochkin Leonid kurochkinl@spbstu.ru
Polytechnicheskaya, 29, St.Petersburg, 195251, Russia
 The method and technology for integrating discrete and continuous models of regional traffic flows The paper considers the methods of constructing continual macromodels and discrete micromodels, their limitations are described. Based on the discrete model, scenarios of vehicle movement in the regions are implemented. The continual MFlow macromodel of its own design is considered, the basis for which are the Navier-Stokes equations, which allows the use of existing developments in the numerical solution of conservation equations and the study of bubble flows. The method for integrating a discrete and continuum model is developed. The configuration parameters and modeling technology in the discrete SUMO simulator are presented. The parameters of the MFlow solver and the algorithm for solving equations in the continual model are described. Experiments were conducted on the convergence of the results obtained in macro and micromodels for scenarios of movement along straight sections of roads and T-shaped intersections at different traffic intensities. 10.18721/JCSTCS.12409 004.94 continual model macromodel micromodel SUMO TraCI discrete simulator continuous-medium model modeling traffic flows intelligent transport systems https://infocom.spbstu.ru/article/2019.63.9/ 111-122.pdf
RAR RUS 123-135 Vladimir State University name after Alexander and Nikolay Stoletovs Rodionov Dmitrii d3391rod@gmail.com
Vladimir, Russian Federation
 Vladimir State University name after Alexander and Nikolay Stoletovs Lyukhter Alexander 3699137@mail.ru
Vladimir, Russian Federation
 Vladimir State University name after Alexander and Nikolay Stoletovs Prokoshev Valery prokoshev_vg@vlsu.ru
Vladimir, Russian Federation
 Calculation of the points of the technological trajectory of the laser robotic complex relative to the tool and tooling in the CAM The article deals with the methods of calculating the points of the technological trajectory of the laser robotic complex (LRC) in the world graphic space CAM relative to the tool and mobile equipment. The questions of using CAM systems in modern laser robotic systems are considered, as well as the authors own software development is presented. The main specifics and problems of calculation of points of the world graphic space CAM and their correspondence to the location of the LRC tool and mobile equipment are considered. Methods for calculating the position and orientation of the tool relative to the local basis of the part model are presented. Their calculation in the system of two-axis positioning device of LRC is offered. The mechanism of determining the position of the rotation angle around the laser beam of the LRC actuator fixed on the 6th axis of the movable flange of the last link of the industrial robot is described. 10.18721/JCSTCS.12410 681.5 CAD/CAM design system laser robotic systems laser welding industrial robots industrial lasers industry digitalization offline programming https://infocom.spbstu.ru/article/2019.63.10/ 123-135.pdf
RAR RUS 136-144 Peter the Great St. Petersburg Polytechnic University Filipovskii Vladimir fil@icc.spbstu.ru
St. Petersburg, Russian Federation
 Peter the Great St. Petersburg Polytechnic University Polyuga Nikolay van-der-gan@mail.ru
St. Petersburg, Russian Federation
 Peter the Great St. Petersburg Polytechnic University Mukhambedyarov Bekbol space_line93@mail.ru
St. Petersburg, Russian Federation
 Synthesis of the discrete regulator by re-equipment method taking into account the delay in a computer device The technique of synthesis of a discrete regulator of an electromechanical system by the methods of re-equipment is considered: Euler, inverse differences, Tastin. A comparative analysis of the discrete systems obtained was carried out. Based on the results of experiments performed in the Simulink environment, the necessity of taking into account the lag time in a digital computing device at the stage of synthesis of a continuous regulator is shown. The comparative dependences of the quality indicators of the synthesized system on the quantization interval T of the discrete part of the automatic control system with different methods of conversion are presented. It is shown that with an increase in the quantization interval in a discrete system, the overshoot increases. With the growth of T, there is an increase in the delay in the reaction of a discrete system to a single step function with respect to the reaction of a continuous system. The best results are obtained by the conversion of the regulator using the method of inverse differences, the worst – the Euler method. 10.18721/JCSTCS.12411 681.51.11 electromechanical system DC motor re-equipment discrete controller delay quality indicators https://infocom.spbstu.ru/article/2019.63.11/ 136-144.pdf
RAR RUS 145-158 Peter the Great St. Petersburg Polytechnic University Uspensky Mikhail umihail@list.ru
St. Petersburg, Russian Federation
 A survey of the approaches to storage systems fault detection In present paper, we have carried out a comparative analysis of existing software used for health monitoring in enterprise-level storage systems, described commonly used approaches to monitoring data collection, processing and storage, fault detection methods. Based on this analysis we proposed criteria for monitoring software classification and comparison, generalized monitoring software architecture, its modules and module interaction. We also carried out a survey of the recent publications dedicated to anomalies detection, fault diagnosis in a field of data storage and computing systems, and described commonly used algorithms, including clusterization and classification methods, statistical analysis, SVM, isolated forest, artificial immune system, invariant networks. 10.18721/JCSTCS.12412 004.021 anomaly detection machine learning fault diagnosis storage system root cause analysis https://infocom.spbstu.ru/article/2019.63.12/ 145-158.pdf