scholarly journals Complex methodology of parameters management of military radio networks in the conditions of uncertainty of the radioelectronic situation

2020 ◽  
pp. 73-85
Author(s):  
А.В. Шишацький ◽  
Ю.В. Журавський ◽  
В.М. Остапчук ◽  
М.В. Сова ◽  
О.Д. Гаращук ◽  
...  
Keyword(s):  
Communication Systems ◽  
Open Systems ◽  
Radio Networks ◽  
Open Architecture ◽  
Reference Network ◽  
Radio Communication ◽  
Network Resources ◽  
Radio Communications ◽  
Electronic Environment ◽  
Radio Systems

The experience of the Joint Forces operation (Anti-terrorist operation in Donetsk and Luhansk oblasts) shows that the current order of management of military radio communication systems does not always meet the modern requirements for them. The classic centralized approach to the management of channel and network resources of military radio systems does not quite meet modern requirements, so the authors of this article proposed to take mobile self-organizing networks as a basic principle of construction. The authors propose a comprehensive method of managing the parameters of military radio networks in conditions of uncertainty of the electronic environment, the essence of which is to ensure the maintenance of the specified values of the performance of military radio communication systems at the appropriate level. The article is based on the control principle, which is described in the reference network model of open systems interaction, but with some additions and changes. This approach generally allows for end-to-end management of channel and network resources of military radio systems in a complex electronic environment. In the article, the device of fuzzy logic, the theory of electronic suppression, neural networks, the theory of noise protection, the theory of antennas, noise-resistant coding are used. The proposed complex methodology should be used in the development of software for modules (units) for the assessment of advanced radio communications, based on open architecture interfaces version SCA 2.2, which will: use effective signal-code structures to ensure noise immunity of channels; to ensure efficient use of the radio frequency resource of programmable radio communication means; increase the speed of evaluation of communication channels; reduce the use of computing resources of radio communications with programmable architecture.

scholarly journals DEVELOPMENT OF THEORETICAL PROVISIONS OF TRANSMISSION OF DISCRETE MESSAGES OF MILITARY RADIOCOMMUNICATION SYSTEMS

2020 ◽  
Vol 2 (60) ◽  
pp. 180-183
Author(s):  
A. Shyshatskyi ◽  
O. Cherniak ◽  
A. Lyashenko ◽  
S. Paniuk ◽  
A. Doroshets ◽  
...  
Keyword(s):  
Communication Systems ◽  
Communication Theory ◽  
Link Quality ◽  
Practical Significance ◽  
Radio Communication ◽  
Radio Communications ◽  
Finite Duration ◽  
Radio Systems ◽  
Signal Fading

Modern military radio systems operate in the complex conditions of the electronic environment, due to the limited frequency range, the influence of deliberate interference and signal fading. One of the ways to improve the effectiveness of military radio communication systems is to develop indicators (methods, techniques) for evaluating the effectiveness of military radio communication systems. The analysis found that known approaches to evaluating the performance of military radio communications systems are based on the use of bit error probability in a channel, which is a rather rough indicator of channel estimation. This necessitates the development of theoretical provisions for the transmission of discrete messages to military radio systems. In order to improve the known theoretical provisions for the transmission of discrete messages of military radio communication systems, the authors of the article developed indicators for assessing the quality of functioning of military radio communication systems that operate in complex conditions of electronic conditions. In the course of the study, the authors of the research substantiated two indicators of link quality in the fading channel: the probability of correctly receiving a message of finite duration and the likelihood of a link of finite duration without breaks. The first metric is the overall metric (communication) quality of the communication, and the second metric is the quality of the channel in the session of the final duration. During the research, the authors used the basic principles of communication theory, theories of insecurity, the theory of transmission of discrete messages, etc. The proposed results can be used to evaluate the status of radio channels when they are exposed to a variety of origins and signal fading. The practical significance of these results is that they can be used to upgrade existing radios or to develop new ones by developing appropriate software

scholarly journals Justification of ways increasing the immunity of special purpose radio communications

2021 ◽  
Vol 2 (2(58)) ◽  
pp. 46-50
Author(s):  
Andrii Shyshatskyi ◽  
Vitalii Hasan ◽  
Mykola Kryvenko ◽  
Oleksandr Petrov ◽  
Serhii Kravchuk ◽  
...  
Keyword(s):  
Communication Systems ◽  
Queuing Theory ◽  
Noise Immunity ◽  
A Priori ◽  
Radio Communication ◽  
Radio Communications ◽  
Radio System ◽  
Radio Systems ◽  
A Priori Uncertainty ◽  
The Military

The object of research is the military radio communication system. One of the most problematic areas in the military radio resources management is the interference of military radio systems and facilities. A number of works have been devoted to the study of ways to increase the noise immunity of military radio communication systems and facilities. However, the known works contain some research results by scientists, which are aimed at increasing the noise immunity of military radio communication systems and devices and do not have a comprehensive approach. This work solves the problem of substantiating ways to increase the noise immunity of military radio communication systems and facilities. The scientific problem is solved by substantiating the methodological principles of increasing the noise immunity of military radio communication systems in conditions of a priori uncertainty. During the research, the authors used the main provisions of the queuing theory, the theory of automation, the theory of complex technical systems, as well as general scientific methods of cognition, namely analysis and synthesis. The novelty is that in the course of work: – the purpose of functioning of the noise protection system of military radio communication systems is formulated; – indicators and criteria for increasing the noise immunity of military radio communication systems have been determined; – decomposition of the solution of this problem into problems depending on the signal and noise situation is carried out. An approach based on the hierarchical decomposition of the networks functional structure, the behavior of which is described by stochastic differential (or difference) equations of the high dimension state, into a number of interconnected but simpler functional structures is used for the functional description of military radio communication systems. The proposed approach to describe the behavior of military radio systems will allow to decompose the military radio system state and increase the efficiency of decision-making to adjust operating modes and parameters in real time. The results of the research should be used at the stage of parameters operational management and modes of the system operation.

scholarly journals Influence of Aircraft Power Electronics Processing on Backup VHF Radio Systems

Electronics ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 777
Author(s):  
Jan Leuchter ◽  
Radim Bloudicek ◽  
Jan Boril ◽  
Josef Bajer ◽  
Erik Blasch
Keyword(s):  
Power Electronics ◽  
Electromagnetic Interference ◽  
Communication Systems ◽  
Electromagnetic Compatibility ◽  
Intermediate Frequency ◽  
Radio Communication ◽  
Very High Frequency ◽  
Switching Power ◽  
Radio Systems ◽  
The Impact

The paper describes the influence of power electronics, energy processing, and emergency radio systems (ERS) immunity testing on onboard aircraft equipment and ground stations providing air traffic services. The implementation of next-generation power electronics introduces potential hazards for the safety and reliability of aircraft systems, especially the interferences from power electronics with high-power processing. The paper focuses on clearly identifying, experimentally verifying, and quantifiably measuring the effects of power electronics processing using switching modes versus the electromagnetic compatibility (EMC) of emergency radio systems with electromagnetic interference (EMI). EMI can be very critical when switching power radios utilize backup receivers, which are used as aircraft backup systems or airport last-resort systems. The switching power electronics process produces interfering electromagnetic energy to create problems with onboard aircraft radios or instrument landing system (ILS) avionics services. Analyses demonstrate significant threats and risks resulting from interferences between radio and power electronics in airborne systems. Results demonstrate the impact of interferences on intermediate-frequency processing, namely, for very high frequency (VHF) radios. The paper also describes the methodology of testing radio immunity against both weak and strong signals in accordance with recent aviation standards and guidance for military radio communication systems in the VHF band.

scholarly journals Technique of radio suppression of a radio communication system in a Wі­Fі network from noise­like signals based on the HTTP/3 рrotocol

Connectivity ◽  
2020 ◽  
Vol 145 (3) ◽  
Author(s):  
V. M. Cherevyk ◽  
◽  
A. V. Glushchuk
Keyword(s):  
Data Transmission ◽  
Communication Systems ◽  
Electromagnetic Compatibility ◽  
Power Level ◽  
Pseudorandom Sequence ◽  
Radio Communication ◽  
Electronic Warfare ◽  
Radio Communications ◽  
Pulse Interference ◽  
Radio Communication System

The article presents the results of the analysis of the existing method of radio suppression of radio communication systems in Wi-Fi networks, and conclusions are drawn regarding ways to increase its effectiveness. The method of radio suppression of radio communication systems with noise-like signals was chosen. It contains the implementation of structural obstacles and a scheme for smooth control of their power implemented in the HTTP/3 protocol. This makes it possible to increase the effectiveness of a jamming station with radio suppression of certain radio communication systems and reduce radioelectronic control equipment requirements. For the applied implementation of this technique in a jamming station, it is necessary to predict a reconnaissance tool covering the reception, determination and estimation of the parameters of noise-like signals; structural interference block; unit execution and regulation of the required power level of structural interference. One of the main tasks is to suppress radio communication systems (SRS). However, with the advance of digital technologies in speech and data transmission, noise-signaling (SHP) signals are increasingly being used to improve the noise immunity and latency of SRHs. One way to implement such signals is to modulate the carrier frequency by a pseudorandom sequence. The issue with productive radio suppression (RP) of SRWs with SHPS has been developing quite actively in recent years, and still remains relevant. Based on the features and means of electronic warfare (EWB), the SPS radio communications systems may be muted by the application of high-power shielding, narrowband or pulse interference. But this method does not cover minimization of radiolabeling of EW methods and can lead to electromagnetic compatibility violations.

scholarly journals Analysis of mathematical models of mobility of communication systems of special purpose radio communication systems

2021 ◽  
Vol 4 (2(60)) ◽  
pp. 39-44
Author(s):  
Oleksii Nalapko ◽  
Oleg Sova ◽  
Andrii Shyshatskyi ◽  
Anatolii Hasan ◽  
Vira Velychko ◽  
...  
Keyword(s):  
Wireless Networks ◽  
Mathematical Models ◽  
Communication Systems ◽  
Radio Networks ◽  
Mobile Radio ◽  
Mobility Models ◽  
Radio Communication ◽  
Deterministic Models ◽  
Advantages And Disadvantages ◽  
Individual Nodes

The object of research is the military radio communication system. One of the problems in improving the effectiveness of military radio communication systems is the correct description of the movement process in them. Efficient routing protocols are only possible if reliable information on network topology for network nodes is available. Thus, with this information, packets can be forwarded correctly between the sender and the recipient. Given that the mobility of individual nodes is insignificant in special wireless networks, nodes in the network show the mobility properties of a group of nodes. This observation is directly related to the very existence of military wireless networks with the ability to organize themselves, that is, to support group cooperation and group activities. In this work the problem of analysis (decomposition) of the mobility models of military radio communication networks with the possibility of self-organization is solved. The classification of mobility patterns, the description of individual mobility models and the analysis of various aspects currently available, as well as those properties lacking in the attempt to simulate the movement of individual nodes, have been carried out. During the research, the analysis of random, semi-deterministic and deterministic models was carried out. The advantages and disadvantages of the above models have been identified. In the course of the research, the authors of the work used the main principles of the theory of mass service, the theory of automation, the theory of complex technical systems, as well as general scientific methods of knowledge, namely analysis and synthesis. The research results will be useful in: ‒ synthesis of mathematical models of node mobility; ‒ evaluation of the effectiveness of the science-based tool for assessing the mobility of nodes; ‒ validation of recommendations to improve the efficiency of mobile radio networks; ‒ analysis of the radio-electronic situation during the conduct of military operations (operations); ‒ creating advanced technologies to improve the efficiency of mobile radio networks.

scholarly journals DEVELOPMENT OF A MATHEMATICAL MODEL OF THE FUNCTIONING OF MULTI-ANTENNA RADIO COMMUNICATIONS WITH SPECTRALLY EFFECTIVE SIGNALS UNDER THE INFLUENCE OF DESTABILIZING FACTORS

ScienceRise ◽  
2020 ◽  
Vol 4 ◽  
pp. 40-45
Author(s):  
Viktor Ostapchuk ◽  
Oleg Sova ◽  
Andrii Shyshatskyi ◽  
Olexander Harashchuk
Keyword(s):  
Mathematical Model ◽  
Communication Systems ◽  
Noise Immunity ◽  
High Mobility ◽  
Negative Influence ◽  
Antenna System ◽  
Radio Communication ◽  
Radio Communications ◽  
Destabilizing Factors ◽  
Antenna Systems

The necessity of developing a mathematical model for the functioning of multi-antenna radio communication facilities with spectrally effective signals under the influence of destabilizing factors has been substantiated. The results of the study of the influence of destabilizing factors on the multi-antenna systems with spectrally effective signals are presented. New analytical dependences have been obtained, which make it possible to calculate the effect of destabilizing factors on the efficiency of multi-antenna system with spectrally effective signals. Object of research: development of a mathematical model of the functioning of multi-antenna radio communication facilities with spectrally effective signals under the influence of destabilizing factors. Investigated problem: taking into account additional destabilizing factors on the multi-antenna of a radio communication facility with spectrally effective signals. Main scientific results: when transmitting information in multi-antenna radio communication systems with spectrally effective signals, the following are taken into account: Type of parameters of deliberate interference, type and parameters of deliberate fading, type and parameters of security code structures, phase jitter, slope of the constellation matrix, Intersymbol interference, high mobility of objects (transmitter and receiver), the number of receiving and transmitting antennas, the number of subcarriers in the antenna channel. It has been established that taking into account all the parameters in the system makes it possible to assess the state of the channel, to develop measures to reduce the negative influence of destabilizing factors on the noise immunity of multi-antenna systems. A review of the practical use of research results: radio communication facilities with programmable architecture. Innovative technologies product: technology for substantiating the architecture of transceivers, software for programmable radio equipment, which can increase the noise immunity of radio communications, taking into account additional destabilizing factors and software for radio monitoring equipment. Overview of an innovative technological product: programmable radios, software for radio communications.

scholarly journals Using of New Narrowband Waveforms to Ensure Proper Operation of Command and Communication Systems

2018 ◽  
Vol 215 (4) ◽  
pp. 47-61
Author(s):  
Robert Matyszkiel ◽  
Bogusław Grochowina ◽  
Adam Dobkowski ◽  
Marcin Wiśniewski ◽  
Paweł Domaros
Keyword(s):  
High Frequency ◽  
Communication Systems ◽  
Radio Communication ◽  
Very High Frequency ◽  
Communication Devices ◽  
Working Groups ◽  
Basic Services ◽  
Radio Systems ◽  
Services Implementation ◽  
Proper Operation

Abstract Accomplishment of basic services implementation with specific quality is one of the main challenges of the command and communication systems for modern maritime safety and defense. The specificity of the marine environment imposes the use of narrowband HF (High Frequency) and VHF (Very High Frequency) radio communication devices which are capable to implement IP transmission. This paper presents the requirements for the HF and VHF radio systems according to the IP protocol requirements. At the beginning basic properties of narrowband HF and VHF waveforms in context of their operational scenarios has been described. Then results of experimental research (implementation of narrowband services — voice and data) has been presented. Finally further research directions with contribution of the authors, in NATO working groups related to the development of NBWF (Narrowband Waveform) for coalition communication has been presented.

scholarly journals On the possibility of organizing communication for e-Navigation in the coastal zone using radio-technical posts of the vessel traffic control system

2021 ◽  
Vol 2061 (1) ◽  
pp. 012110
Author(s):  
I I Buzenkov ◽  
A A Tyufanova ◽  
E P Khaleeva
Keyword(s):  
Coastal Zone ◽  
Traffic Control ◽  
Information Exchange ◽  
Communication Systems ◽  
Radio Communication ◽  
Radio Communications ◽  
Satellite Systems ◽  
Intelligent Transport ◽  
Protection Information ◽  
Traffic Control System

Abstract The concept of e-Navigation is to unify activities for the collection, integration, exchange, presentation and analysis of information on vessels and in coastal services through electronic technologies to improve the navigation safety, and the quality and efficiency of the relevant services.The generalized analysis of the obtained data is used to determine the appropriate actions in the prevailing conditions, to improve the process of the vessel’s transition from berth to berth (in ports of departure and destination) and the corresponding services that ensure the safety of navigation, environmental protection, information exchange between intelligent transport systems.The basis for fulfilling the assigned tasks are three basic components of e-Navigation: vessel systems; coastal and satellite systems; communication infrastructure. The purpose of the paper is the possibility of applying broadband radio communications for unmanned navigation in the coastal zone. The research object is the analysis of broadband communication systems; the subject is the assumed range of the WiMAX radio communication zone. EMC Planner 1.1_170328 is used to simulate the anticipated WiMAX radio zone.

scholarly journals 25 years of the TETRA standard and technology for contemporary digital trunking systems of professional mobile radio communications

2021 ◽  
Vol 69 (2) ◽  
pp. 426-460
Author(s):  
Slađan Svrzić
Keyword(s):  
Frequency Spectrum ◽  
Historical Development ◽  
Communication Systems ◽  
Data Transfer ◽  
Armed Forces ◽  
Mobile Radio ◽  
Radio Communication ◽  
Radio Communications ◽  
The World ◽  
Mobile Radio Communications

Introduction/purpose: For the construction of functional mobile radio communication systems today, the trunking systems of digital mobile radio communications are almost exclusively used, the main representative of which is the system with the application of TETRA standards. This article describes the beginnings and historical development of this standard, with the activities of ETSI and TETRA MoU in the fight for the availability and harmonization of the frequency spectrum. Methods: A description of relevant issues of the origin and development of the TETRA 1 standard is given as well as the analysis of the characteristic moments of the innovated TETRA 2 standard. Results: This article describes the beginnings and historical development of this standard, with the activities of ETSI and TETRA MoU in the fight for the availability and harmonization of the frequency spectrum. It also systematize the use of the key TETRA systems in the world and shows its share in the world market by sectors, emphasizing the dilemma of its further development at the crossroads after 25 years of existence. Also, a basic overview of the TETRA 1 standard is given while the basic elements and the principle of its application are described. The innovated TETRA 2 standard and the improvements achieved in the way of data transmission are described in more detail; the process of interoperability certification and, in connection with that, the entry of TETRA into the North American market is emphasized. The parameters selected for advanced data transfer according to the TETRA 2-TEDS standard are presented and analyzed, together with an overview of some limitations during practical application. Conclusion: In the conclusion, the current moment of TETRA is analyzed with a focus on its future after 25 years of development, emohasizing a possibility of modernizing and improving the TETRA network of the Ministry of the Interior of Serbia for the needs of the MoD and the Serbian Armed Forces.

The Formation of Signal Construct of Complex Structures with a High Level of Uncertainty in Their Parameters

2021 ◽  
Vol 27 (3) ◽  
pp. 132-137
Author(s):  
S. V. Dvornikov ◽  
◽  
A. V. Pshenichnicov ◽  
S. S. Manaenko ◽  
I. N. Glukhikh ◽  
...  
Keyword(s):  
Random Graph ◽  
Communication Systems ◽  
Complex Structure ◽  
Practical Significance ◽  
Practical Implementation ◽  
Complex Structures ◽  
Radio Communication ◽  
Modulation Formats ◽  
Theoretical Approaches ◽  
Radio Systems

Radio communication systems with enhanced resistance to illegitimate influences are of great interest in the development of modern information technologies. The modern methods of implementing such radio systems are the technologies of cryptographic information protection, methods of direct spectrum expansion. Despite the achievements of the selected subject area, the practical implementation of radio systems of this level is hampered by models of radio communication channels. Known results in their totality do not take into account the potential capabilities of implemented modulation formats, which limits their practical application and indicates the relevance of the study. The aim of the scientific work is to formalize theoretical principles and approaches to the formation and evaluation of the effectiveness of signals of complex structure. The authors posed and solved the problem of a formalized presentation of the obtained solutions, conducted a critical analysis of the results obtained by different methods. In this case, methods of statistical radio engineering, harmonic analysis of discrete signals, random graph theories, and decision making were used. The authors conducted a simulation of the processes of manifestation of various structures of the generated signals. The coincidence of theoretical and practical results is substantiated. During the study, the properties of signals of complex structures were determined. A theoretical statement is formulated and proved that justifies the increase in the structural secrecy properties of the generated radio signals. The novelty of the approach is the use of random graph theory, which has reduced the complexity of the evidence base, the stages of simulation. The theoretical results obtained are critically evaluated in relation to the final modeling data, which made it possible to substantiate the adequacy of the results. The obtained solutions substantiate theoretical approaches to the formation of signal construct of complex structure. In contrast to the known studies, the study reveals the potential stability boundaries of radio systems based on signals with uncertain parameters. The theoretical significance of the presented results is the expansion of the practical implementation of the methods of the general theory of communication in the field of building noise-immune systems. Practical significance is based on the results of analytical and simulation modeling presented in the work.

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