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Key words:

mathematical model, combinatorial problem, information support, minimax criterion, dynamic programming, automated workplace

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The cybernetic aspects of information support for decision-making during highly dynamic combat operations are considered. A verbal description and a mathematical model of a nonlinear problem based on a minimax criterion are given. The application of the combinatorial method to the solution of the formulated problem is justified in the interests of information support for decisions made in conditions of multivariate warfare. A variant of the implementation of the dynamic programming method as part of special mathematical and software for automated workplaces of government officials is proposed. The choice of the dynamic programming method is justified for several reasons. Firstly, this method refers to the direct search methods (exact) of mathematical programming. Secondly, it has advantages: the search is not complete, but shortened and directed. Due to these features, the dynamic programming method is quite convenient for solving multidimensional control problems.

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radio communication network, genetic algorithm, antenna broadband, method of moments, adaptive genetic operators

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This paper presents an improved methodological apparatus for the synthesis of antenna systems with concentrated loads, based on the use of adaptive genetic algorithms. To evaluate the characteristics of the radiators obtained during the execution of the genetic algorithm, the method of moments is used, where concentrated loads are taken into account by the Dirac delta function. A method for encoding antennas with loads, mechanisms for adaptive parameter tuning of the genetic algorithm, and specialized operators for working with antenna systems are proposed. Theoretically, the possibility of expanding the operating frequency band of antenna systems while maintaining the required radiation characteristics is substantiated through the use of the proposed methodological framework. The result of the application of this methodological apparatus can be both optimization of individual radiators and radiators as part of headlamps and arrays.

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optimal trajectory, calculus of variations, functional, transversality conditions, optimal trajectory modeling

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The task of hitting a target with an object of destruction is considered. At the same time, it is determined that a necessary condition for the solution is the need to hit the target with an object of damage normal to its trajectory of flat or spatial movement, which, by definition, will provide the greatest impact effect. Optimality conditions are formed from the principle of optimal control. A mathematical model is presented that makes it possible to find the parameters of the desired trajectory of the collision of the target object, based on the principles of solving the variational problem of predicting the most optimal path length, represented as an appropriate functional, taking into account the conditions of transversality. Computer modeling was performed and all parameters of the optimized trajectory for two-dimensional and three-dimensional problem formulation were determined using the developed program.

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unintended interference, angle-modulated interference, bit error probability, phase modulation

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The article presents the results of modeling the impact of unintentional angle-modulated interference on receiving devices of discrete relayed signals from satellite communication systems, considering the frequency offset between the interference and the signal. The model incorporates channel coding, modulation, coding rate, an additive scrambler, gamma encoding, continuous angle-modulated interference, and noise interference. Bit error rate values were determined as a function of the signal-to-interference ratio when employing a convolutional encoder. The impact of targeted and untargeted unintentional angle-modulated interference on receiving devices with BPSK, QPSK, 8PSK, and 16QAM modulated signals was investigated. A comparison was made between the effects of unintentional angle-modulated interference and noise interference on a wideband satellite communication system.

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Key words:

network technology control systems, transport communication network, highly dynamic communication system, communication control point, control theory, communication theory, general systems theory, model, structure

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The verbal model of the network technological management system of the transport communication network of the highly dynamic special-purpose communication system is presented as a subsystem of the highly dynamic communication system. The communication control points included in its composition, the main and partial tasks of the network technological management system are presented and described. The decomposition of the system under consideration is given according to its belonging to the level of the management hierarchy, according to functional and organizational characteristics. The factors influencing the structure of the network technological management system are determined. The external factors influencing the structure of the network technological management system of the transport communication network of a highly dynamic communication system are presented and described, and the main ones that have a significant impact on the construction of this technological management system are highlighted.

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operational suitability parameters, load-bearing structures, special structures, damage parameters, parametric identification, similarity criteria

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Within the framework of this work, a model for assessing the parameters of the operational suitability of load-bearing structures of special structures in conditions of degradation and risk of emergency situations is proposed. The developed model uses an integrated approach based on parametric identification of materials and load-bearing structures of special structures of the launch complex and the creation of similarity criteria for damaged and undamaged load-bearing structures, identification of critically important load-bearing structures after exposure to emergency loads and impacts. A physical model of parametric identification of special structures has been developed, taking into account the parameters of damage, strength and deformability of structures. Criteria for the similarity of load-bearing structures of special structures for various stages of operation are constructed.

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satellite communication system, communication spacecraft multilevel orbital grouping, routing in satellite communications

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The paper presents modern trends in the development satellite communication systems aimed at ensuring global high-speed information exchange analysis brief results. The realized review, as well as consideration of the specifics the key of which are the ground gateway satellite communications stations infrastructure deployment, served as the basis for domestic multi-level satellite communications system construction proposals. The paper presents communication spacecraft multi-level orbital constellation options at different altitudes, their advantages and disadvantages in terms of the satellite communications network overall stability. Due to the high dynamics of changes in the multi-level satellite communications network orbital grouping topology, special attention is paid to the information traffic routing choice in communication spacecrafts.

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assault actions, assault group, control system, communication system, military formation, dual purpose radios, TCP/IP protocol stack packet switching technologies

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Currently, when preparing units for upcoming operations, the experience gained during a special military operation is not always taken into account. This is due to the large amount of information coming from task areas, which takes some time to systematise, generalise and implement. At the same time, less attention is paid to the peculiarities of combat of small tactical units. The article considers the options of organisation, preparation and actions themselves when attacking the front edge of the defending enemy units, when storming the first (second) positions and close combat in the trenches. As well as the preparation of units to perform a combat task, from the point of view of the organisation of communication in it.

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communication systems, intercom telephony, audio conferencing, operational management, response time, manageability

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The article deals with the peculiarities of the organisation of service telephone communication in the groupings of troops operating in the zone of a special military operation. Special attention is paid to audio conferencing, which has become a technical basis and a critical element of operational management. The key requirements to the audioconferencing system, its classification and influence on the controllability of the communication system are analysed. The aspects of reliability, security and resistance to external influences are considered. The estimation of the controllability index is carried out, taking into account the time delays for decision-making, information transfer and operational response of the command staff. The main factors affecting the speed and efficiency of control are identified. The ways of increasing the efficiency and stability of the communication system in difficult conditions are considered. The necessity of improvement of audioconferencing facilities to increase the efficiency of troop control is substantiated.

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radio communication network, noise immunity, unmanned aerial vehicle, adaptive antenna array, propagation environment, fading and fading of radio waves, communication probability

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The paper presents the development of a ground-to-air radio communication network model that provides a new approach to noise immunity in composite radio links using unmanned aerial vehicles. This model proposes the application of the method of adaptive antenna arrays together with the method of pseudo-random or software tuning of operating frequencies on the drone body, taking into account the models of propagation environments, which most comprehensively and fully describe all the available effects on the communication system of the ground-air network and various kinds of attenuation in the communication channels. The developed model allows to get all necessary values for calculation of probability of connection, as an indicator of noise immunity, and further to become a basis for realization of methodology of calculation of noise immunity in composite radio lines of ground-air communication networks.

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Key words:

road blocker, means of forced stopping of motor vehicles, technical solutions

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The article considers modern trends in the creation and application of road blockers from the forced stopping means. The priority areas for improving the existing designs of road blockers are defined, the main ones being: strengthening the structure by placing vertical and horizontal stiffeners; inclusion in the lifting platform of additional spikes to damage the tires of the car, counterweights, spring shock absorbers; folding protective curtains, an additional stop in the base for fixing the lifting platform in the combat position, a special threaded sleeve for adjusting the position of the drive, a drive safety device, a device compensating for thermal expansion in the drive elements, improving the design of the drive shaft by making special grooves on it.

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car, water, kit, container, module, fire extinguisher, foam, tank, fire extinguishing equipment, fire safety

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The article considers the directions of development of mobile container-type fire extinguishing equipment for solving fire safety problems, localization and elimination of fire foci. The article presents the tactical and technical characteristics, purpose, functions, staffing of fire fighting equipment and tools of the mobile fire tank «KSP-10 fire extinguishing Kit», as well as its use at law enforcement facilities, in the economic complex, in the residential sector of cities and towns of the Russian Federation. The list of objects of possible application of KSP-10 during transportation by car (trailer), as well as as a stationary product is presented.

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starting device, bell, locking unit, combat stop, polyamide, pressure, deformation, strength

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The authors propose a design scheme of a device for throwing a net with a single-use polyamide bell with a propelling cartridge in it with an electric primer-igniter. The necessary conditions are considered that ensure sufficient strength of the bell barrel when fired. For the manufacture of individual parts of the device and the bell body, it is proposed to use polyamide with sufficiently high strength characteristics and insignificant weight in comparison with metal. It is taken into account that when fired, the bell barrel and other parts of the device will experience significant deformation under the action of the maximum pressure of powder gases. The strength of individual parts of the device is calculated. Acceptable calculated values of the strength characteristics of parts made of polyamide are obtained and a conclusion is made on the possibility of using the selected material.

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Key words:

test center, fire alarm system, efficiency, military and civilian facilities, assessment method, fire, safety, sensors, system response, testing, protection

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The article considers the test hearth method as a key approach to evaluating the effectiveness of fire alarm systems at special-purpose facilities. The principles of creating and using test fires that simulate the conditions of a real fire are described in detail. It analyzes how this method helps to check the system's response speed, sensor accuracy, and overall alarm reliability. The importance of regularly conducting such tests is emphasized in order to ensure a high level of fire safety at particularly important military and civilian facilities and increase their security.

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Key words:

targeting, optimization, adaptive control, focal length, pointing head

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In order to stabilize the flight path of guided projectiles, the rotational motion of the projectiles is often used. The rotation of the projectile creates significant difficulties for the projectile’s scanning system, which aims at the target. To solve this problem, the space scanning method is used by installing a line of photosensitive devices in the radial direction on the imaging plane of the scanning system of the guidance head of a rotating projectile. Two optimization problems for implementing adaptive control of the focal length of projectile optics are formulated and solved: (a) control of the focal length, depending on the distance to the object; (b) control of the focal length, depending on the width of the detector in the far sector of the trajectory departure detection disk. It is determined that in the first case, a direct relationship between the function and the argument of the adaptive equation is required, and in the second case, an inverse relationship.

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Key words:

recovery management system, artillery weapons, decision support system, information management system

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The issue of increasing the efficiency of the restoration of artillery weapons samples within the framework of the existing artillery recovery management system, taking into account the available means of information exchange, is considered. The analysis of the organization of artillery weapons sample recovery management is carried out. It is proposed to improve the existing system in two stages. At the first stage, to develop an information and management decision support system for the restoration of artillery weapons samples with localization of management at three levels of the recovery system — brigade, army and group of forces (forces). At the second stage, create a single recovery management center, deployed on the basis of the Directorate of Technical Support of the group of Forces.

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Key words:

repair and restoration organ; functional survivability, redundancy

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Within the framework of this article, using the example of motorized rifle or tank divisions, which are the main operational units in planning upcoming actions, the process of restoring weapons, military and special equipment by hierarchy levels is considered. New requirements for reserving the production capacities of repair and rehabilitation facilities and possible ways of reserving them to ensure the survivability of military organizational and technical systems are proposed, which are due to the possibility of using them at any hierarchical levels due to the ease of understanding and the limited amount of analyzed information when deciding on their use. At the same time, functional redundancy is considered for decision-making, limited by evaluating the effectiveness of the use of repair and restoration bodies under enemy influence with an established maintenance and repair system.

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Key words:

repair of artillery guns, operational management, information and analytical support method

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The solution of the multi-criteria task of supporting the operational management of the repair of artillery guns in the repair and restoration authority is considered. A method of information and analytical support for the management of the restoration of artillery weapons has been developed, which ensures an increase in the coefficient of conservation of the effectiveness of samples by reducing the recovery time through the rational distribution of specialists from the missile and artillery armament service and their technological operations in the repair and restoration authority sites, taking into account the stochasticity of the restoration process. To implement the method, we have developed: functional and mathematical models; an algorithm for solving an optimization problem; a methodology for forming and visualizing a technological graph and route-technological maps.

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solid-state photodetectors, photodetector sensitivity, dark electrons, dark current, ionization of impurity atoms, thermal generation, band gap of impurity semiconductors, accumulation time

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The physical processes determining the formation of dark electrons in solid-state photodetectors are considered. A technique is presented that allows one to determine the number of dark electrons in solid-state photodetectors. Temperature regimes and ranges are determined at which dark electrons are formed, both due to impurity ionization and due to thermal generation. Quantitative estimates of the number of dark electrons, the value of the accumulated charge and the dark current from such parameters as temperature, the width of the forbidden band of the material and the duration of the accumulation time interval are given. It is shown that a decrease in the level of dark electrons and the corresponding current to minimum values at a fixed accumulation time is achieved by optimizing the type of photodetector and operating temperatures.

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anti-fragmentation resistance, anti-personnel fragmentation mines, antipersonnel high-explosive mine, field tests, metal protective structures

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The article presents the results of experimental studies of the anti-fragmentation resistance of protective structures made of steel armor plates 2,5 mm and 4,5 mm thick, armor plates made of aluminum alloys 2,5 and 3,0 mm thick, armor plates made of titanium alloys 4,0 mm thick by detonation of anti-personnel fragmentation mines POMZ-2M, OZM-72, MON-50 and anti-personnel high-explosive mine PMN-2 under testing ground conditions. It has been shown that all the above-mentioned metal protective structures do not have anti-fragmentation resistance to the impact of steel fragments formed during the detonation of anti-personnel fragmentation mines POMZ-2M, OZM-72, MON-50, at a distance in the range of 1,0–6,6 m. The above-mentioned metal protective structures have antifragmentation resistance to the impact of plastic fragments formed during the detonation of the anti-personnel high-explosive mine PMN-2, at a distance of 1,0 m.

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polymer coating, forecasting, defect, degradation, criterion equation

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The polymer coating performs various functions and ensures the reliability and survivability of special-purpose equipment. The used polymer coating of special-purpose equipment is gradually degraded and destroyed. A degrading polymer coating reduces the reliability and survivability of special-purpose equipment, therefore it is important to predict its defects (degree of degradation). The factors influencing the growth of defects in the exploited polymer coating are highlighted. By the method of dimensional analysis, a criterion equation was obtained for predicting the defect (degree of degradation) of a polymer coating from the time of its operation. A comparative calculation of the predicted defects of the polymer coating was carried out according to the obtained criterion equation and the well-known empirical expression, which showed similar results.

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flexible polymer, multifilament fiber, UHMWPE-fiber, absorption of water, protective properties, fragments resistance, Hooke law, Young module, loading diagram, anisotropy

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The article considers mechanisms of water influence on non-woven textile material from UHMWPE-fiber and their effect on protective properties. UHMWPE-fiber has high strength and lightness while limiting its operational characteristics, such as melting temperature (135–190 °C) and water exposure. The study is aimed at testing the hypothesis of a direct correlation between protective properties and water absorption UHMWPE-fiber. The water absorption tests were carried out and the shrapnel resistance V50% was determined using a chip as a target, which allowed to evaluate the effect of water absorption on the protective characteristics of the material. However, the trend towards direct linear dependence has shown the need for further study of the phenomenon under investigation, based on capillary pressure and swelling effect of polymer macromolecules.

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Key words:

security, health, hygiene, dangers, risks, military service, social guarantees, military personnel

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This article provides evidence of a gradually increasing process of shifting the focus of attention in the «preventive» paradigm underlying the implementation of the constitutional right of citizens of our country to health protection, from the initially accepted basis for ensuring the sanitary and epidemic well-being of the population (there is a predominant impact on the dangers and risks of damage to health) towards the introduction, mainly, social guarantees for the maintenance (or restoration) of impaired health. The special conditions of military service, according to the author of the article, are a clear example of the implementation of this concept, when, as preventive measures, preference is given to the development of a system for providing military personnel with social benefits and compensations.

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