Authors

Keywords:

broadband communication, broadband wireless access system, ship, data transmission, system management

Abstract:

In the article, based on the analysis of broadband communication systems, the principles of building a shipboard broadband communication system for the automatic organization of high - speed data transmission networks and ensuring reliable high - speed information exchange between the main broadband communication devices have been developed - is the construction of a single information space in a given water area. Atthesametime, each device carries the main information load, multiplexing independent information channels of users into a single data stream, as well as administration and management of the system as a whole.

Pages  3-12

UDK:  621.396.2

Authors

Keywords:

military robotic complexes, system, development, decision making, optimization, model

Abstract:

The paper considers an optimization model for the formation of solutions for the development of a system of military robotic complexes. The essence of the model is to optimize the type and volume of production of military robotic systems to equip formations of troops (forces) at the next stage of development of the system under consideration. Unlike the well - known optimization models based on the formalization of the optimization goal in the form of a linear function, the proposed model takes into account the non - linearity of the objective function. This increases the adequacy of the model to the real process of forming decisions on the development of a system of military robotic systems. On the basis of the proposed model, a wide range of specific methods can be formed to justify both the development program for the system of robotic complexes and the production programs of enterprises engaged in the production of these complexes.

Pages  13-19

UDK:  658.5

Authors

Keywords:

electrical circuits, serviceability check, integrity matrix, separation matrix, ground - based technological equipment, means of the measuring complex of the cosmodrome

Abstract:

The article analyzes approaches to control systems of electrical connections of the equipment of the experimental and test base of the cosmodrome and highlights their features. Based on the results of the analysis, a new term is formulated - an electric cable system and its generalized mathematical model is presented. Taking into account the peculiarities of the control of ground - based technological equipment for the preparation and launch of space rockets, as well as the means of the measuring complex of the cosmodrome, various variants of the representation of the mathematical model of the electrical cable system of ground - based technological equipment have been developed.

Pages  20-26

UDK:  621.3.062

Authors

Keywords:

digital twin, modeling, systems - based approach, MCC model, UX design, nuclear facility

Abstract:

The development of the model - based system engineering methodology (MBSE) has become one of the foundations for expanding the implementation areas of complex objects digital twins (DT) at the present time. As part of the DT the MCC approach is widely used to manage the target indicators. Effective interaction between participants of the object development and management processes is ensured by UX and UI design approaches. The required quality of DT’ calculation tools is ensured by introducing algorithms for bifurcation analysis, soft modeling, network analysis, multicriteria optimization aimed at solving the problems of incompleteness of external and internal information, the complex dependence of digital twin object’s competitiveness on factors, and the mutual influence of factors. The methods used make it possible to consider DT as a promising tool for improving the efficiency of complex objects. The article provides examples of the use of DT for nuclear facilities to increase among others anti - terrorist protection.

Pages  27-34

UDK:  621.039.003

Authors

Keywords:

information interaction, spacecraft, multi - satellite orbital grouping, ground facilities, queuing system

Abstract:

The paper formulates the relevance of the task of substantiating of the composition of ground - based means of information interaction with spacecraft of a multi - satellite orbital grouping. It is established that one of the main directions of the development of multi - satellite space systems is the introduction of network technologies of information exchange between its main elements. This circumstance makes it possible to present a set of ground facilities in the form of a multi - channel queuing system and apply models and methods of teletraphic theory to calculate its parameters. The authors used the Erlang B model to substantiate of the composition of ground facilities, which is widely used in practice to calculate the volume of infrastructure of existing and prospective cellular networks.

Pages  35-42

UDK:  629.78

Authors

Keywords:

algorithm, data analysis, classification, space object, machine learning, optical measurements

Abstract:

The classification of the state of a space object based on the results of optical measurements is the task of observing and controlling the state of space objects. The article describes common classification algorithms, the developed classification technique and the results of its testing. The initial data for the classification of space objects were simulated brightness measurement data obtained using a software module for estimating non - coordinate information about space objects by ground - based means of a space monitoring system. The purpose of the article is to review the methods for classifying the state of a space object, to compare methods for solving the classification problem, and to select the optimal algorithms for the developed methodology.

Pages  43-49

UDK:  621.3797

Authors

Keywords:

complex object, localized group, movement dynamics, destination area, object coordinates, stationary state, mathematical model

Abstract:

Based on the methods of analytical geometry, a model has been developed that reflects the dynamics of movement of a complex object consisting of several groups of objects. The novelty of the developed model is that in it a group object is considered as separate local groups of single objects, and not as a point object when solving a variety of logistical problems. Due to this, it is possible to determine the coordinates of the location of each object of the group and the time it is in a given area at a given modeling time interval. The developed model can be used as a source of initial data for solving a wide range of applied tasks.

Pages  50-57

UDK:  004.94

Authors

Keywords:

potentially dangerous objects, unnamed aerial vehicle, mobile topographic and geodetic complex, geospatial information, aerial survey, operational updating

Abstract:

Today the risk of emergency situations on potential dangerous objects is not reduced. That is why the actual tasks are reduction the scope and liquidation the negative influence of accidents. For planning such tasks the wide volume of dissimilar information is need. This kind of information must be quickly received on inaccessible territory. The article considers the methodology of operating planning aerial survey on the areas of potentially dangerous object for unnamed aerial vehicle as a part of the mobile topographic and geodetic complex. Proposed methodology is effective in different causes of emergence extreme situations such as: natural hazards, accidents, terroristic and military operations and others.

Pages  58-64

UDK:  623.646

Authors

Keywords:

functional coating, defect, defect, detachment, crack, quality

Abstract:

The theoretical substantiation of the relationship between the defect and the thickness of the functional coating of special - purpose equipment is given. The relationship between the thickness of the functional coating and the magnitude of the critical stress when it is detached from the substrate is shown. Minimizing the thickness of the functional coating eliminates its detachment from the substrate. The relationship between the thickness of the functional coating and the critical depth of the transverse crack during its cracking is shown. The critical depth of the transverse crack is 25 % of the thickness of the functional coating. Transverse cracks with a depth of no more than 40-60 % of its critical depth are stable. To reduce the defect of the functional coating, its layer - by - layer application to the base is recommended. The thickness of a single layer must be equal to or less than the critical size of the transverse crack.

Pages  65-71

UDK:  620.191.33

Authors

Keywords:

public communication networks, field mobile control point, communication node, infotelecommunication infrastructure, infrastructure heterogeneity, infotelecommunication resources, availability assessment

Abstract:

The article considers the issue of ensuring the timely receipt of information services by officials of management bodies located at field mobile control points of the specialpurpose control system. The rationale for selecting indicators of availability of infotelecommunication resources of infotelecommunication infrastructure of public communication networks has been presented. An algorithm for selecting a location for deploying mobile elements of control stations with the best telecommunication characteristics with respect to spatial, physical and logical accessibility to the telecommunication infrastructure of communication operators of public communication networks is proposed.

Pages  72-81

UDK:  621.391

Authors

Keywords:

decameter radio communication, pseudorandom tuning of the operating frequency, frequency resource, multiple access algorithm

Abstract:

The article is devoted to the study of the features of providing multiple access in promising decameter radio communication networks designed in the interests of the defense capability and security of the state for special purposes. It is assumed that the access of stations to the channel resource of the network is carried out by the method of multiple access with employment control. The main features of the construction and functioning of a specialpurpose decameter radio communication network functioning with the collective use of a dedicated frequency resource in the mode of pseudorandom frequency tuning are proposed for consideration. The problematic issues are investigated and the method of choosing the parameters of the algorithm of multiple access to a group of collectively used radio channels is proposed.

Pages  82-87

UDK:  621.396.24; 621.371.38

Authors

Keywords:

stability, technological control system, electronic warfare, network connectivity

Abstract:

This article is devoted to the issue of developing proposals to improve the sustainable functioning of the technological control system of a special - purpose infocommunication network based on optimizing the time of active operation of the stations of the technological control system, which can provide both centralized management and decentralized - through the use of accumulative control stations. The article focuses on the description of the proposed method for determining the composition, location and time of active operation of technological control system stations, taking into account functional dependencies on the indicators of structural and functional stability of a special - purpose infocommunication network and the technological control system of this network, taking into account the impact of destabilizing factors from the enemy, which will allow modeling various situational tasks as close as possible to combat, including terrorist ones.

Pages  88-95

UDK:  623. 61

Authors

Keywords:

object recognition, radar images, support vector machine

Abstract:

The article considers a method for recognizing objects of control from radar images using the principle of synthesizing an aperture. An approach to identifying the area of interest and localization of the controlled object on the radar image is proposed. A method for recognizing test objects using the support vector machine has been developed, which is compared with the traditional training technology on real data from the MSTAR radar image database. The comparison of the probabilities of a positive outcome of the proposed algorithm with the most common methods of recognition of objects under control is carried out. The dependence of the recognition probabilities on the dimension of the training sample is investigated. The results of experiments are presented that confirm the possibility of achieving high quality recognition when training the classifier on images obtained by mathematical modeling.

Pages  96-105

UDK:  528.854

Authors

Keywords:

forced stop devices, anti - ram devices, road barriers, efficiency, penetration, hardness, supports, clearance

Abstract:

A scientific review of some types of uncontrolled mobile devices that impede the movement of wheeled vehicles by forcibly stopping them has been carried out. It has been done to identify common deficiencies in existing road barriers. Considered road barriers of the “Cactus” type, produced by Special Materials Corp. These devices are designed to prevent unauthorized passage on a controlled section of the road, in particular at checkpoints. The features of the use of road barriers are determined depending on the configuration and efficiency of the device, type of road surface.

Pages  106-115

UDK:  62-1; 62-5; 62-9; 629.33

Authors

Keywords:

HDPE, UHMWPE, «Ideal» ceramics, impedance, metal frame, ballistic tests, protective properties

Abstract:

To determine the protective properties of each element of the composite armor structure, ballistic tests of two organic - ceramic panels with different support layers were carried out. The low strength of the low - density polyethylene (HDPE) substrate makes it possible to evaluate the ballistic resistance of only the ceramic layer. It is possible to estimate the contribution of the support layer to the protective properties of the armored structure by comparing the functioning of ultra - high molecular weight polyethylene (UHMWPE) in the composition of the structure and in an isolated layer under the same loading conditions.

Pages  116-126

UDK:  620.168; 623.562.3

Authors

Keywords:

construction in the Arctic, heat - protective materials, remote sensing of the earth, construction object

Abstract:

The paper presents the results of research on the development of low - density nonautoclaved foam concrete (D150) for the construction of buildings and structures in the climatic conditions of the Arctic region of Russia. The mechanism of action of tannins and alginates on the stabilization of construction foam and the reduction of the thermal conductivity coefficient of foam concrete is considered. A heat - shielding structure with fixed formwork is proposed. It is shown that the thickness of the structure is reduced by 30 % when using low density foam concrete. To evaluate the effectiveness of the developed low - density non - autoclaved foam concrete, a method for generating perspective predictive images of buildings and structures (in the infrared range) is proposed, taking into account the characteristics of the construction area and the area near them in the conditions of the Arctic region.

Pages  127-134

UDK:  691

Authors

Keywords:

functional coating, strength, defectiveness, rationing, failure, limit condition, technological mode

Abstract:

The quality indicators of the functional coating of special - purpose equipment are due to its defect. The normalized defect sizes that determine the condition of the coating are highlighted: the maximum defect size that does not lead to failure; the maximum defect size that does not lead to a limiting condition; the maximum defect size that does not affect the coating quality indicator. A linear model of normalizing the size of the coating defect in strength has been developed. The model shows the relationship between the size of the coating defect and the probability of a dangerous event (failure, limit state). The influence of technological modes of coating application on the normalization of size by strength is considered. With the optimal technological mode of coating, the coefficient of strength variation is minimal and the maximum size of the defect corresponds to the state of failure.

Pages  135-141

UDK:  678.019

Authors

Keywords:

radio line, interference, confident reception area, underlying surface, absorption of the earth wave

Abstract:

The paper considers an example of solving the optimization problem of choosing the location of transmitting radio - electronic means (RES) in the ultra - long - wave (VLF) and long - wave (LF) bands, which consists in finding such a spatial (geographical) location of transmitting RES, in which the area of the zone of confident reception is maximal. The analysis of the studied dependencies shows that due to a more rational geographical location of transmitting RES, the choice of their TTX and taking into account the existing interference situation, it is possible to form the necessary zones of confident reception of signals by consumer equipment.

Pages  142-150

UDK:  621.371.32

Authors

Keywords:

information processing, multiprocessor systems, parallel programming, graphic processors

Abstract:

The article is devoted to the problem of increasing the efficiency of information processing in multiprocessor computing systems. The need for such work is determined by the increased need for free access to parallel processing of information, due to its large volumes and limited time resources, as well as the possibility of practical use of parallel programming tools. Recently, a technology has become widespread that allows computing using graphics processors that support arbitrary computing on video cards, but their free use is still difficult, due to the many difficulties that arise in the parallelization process.

Pages  151-156

UDK:  061.68

Authors

Keywords:

additive manufacturing, construction 3D printers, 3D printing, inkjet printing

Abstract:

Against the background of the aggravation of geopolitical conflicts in Europe, the growth of restrictive political and economic measures imposed by states and international organizations against the Russian Federation, the issue of import substitution of used technologies, components and software is acute. The market of additive technologies is rapidly developing in all areas of industry, including construction. The article analyzes the current state of additive technologies. The purpose of the work is to analyze the ways of developing the additive manufacturing method in construction and the possibility of using them in the Armed Forces of the Russian Federation.

Pages  157-169

UDK:  69.002.5

Authors

Keywords:

normality bias, confirmation bias, cognitive distortion, accessibility heuristics

Abstract:

Our brain never rests - it works day and night without stopping. But his work is not perfect and often there are failures in it, so - called cognitive distortions. They follow us throughout our lives and turn out to be mostly harmless, such as the “deja vu” effect. However, there are serious and even dangerous distortions that turn the picture of the world in our eyes or change our behavior in extreme situations. Just such cognitive distortions will be discussed in this article.

Pages  170-172

UDK:  159.9