A SWARM OF UAVs IS A NEW PARADIGM FOR THE USE OF SMALL UNMANNED AERIAL VEHICLES
M.M. Stupnitsky, FSBI NIIR, scientific secretary, associate professor, Ph.D.; smm@niir.ru
L.O. Myrova, FSBI NIIR, leading researcher, professor, Dr.Sci.(Tech.); myrova@niir.ru
Keywords: unmanned aerial vehicle, UAV swarm, counteraction, failure criteria, swarm control, swarm intelligence, self-organization, adaptive systems.
The results of the analysis of the characteristics of the characteristics of the swarm of unmanned aerial vehicles (UAV), which are significant for their destruction, are given. The methods for forming and controlling the UAV swarm are considered. The generalized model of the UAV swarm as an artificial intelligence system and the features of modern UAVs are presented.
INVESTIGATION OF NOISE IMMUNITY OF NON-ORTHOGONAL MULTIPLE ACCESS SYSTEMS WITH PATTERN DIVISION
M.G. Bakulin, Moscow Technical University of Communications and Informatics (MTUCI), associate professor, Ph.D.; m.g.bakulin@gmail.com
T.B.K. Ben Rejeb, MTUCI, dean of faculty, Ph.D.; benrejebt@yandex.ru
V.B. Kreyndelin, MTUCI, head of a department, professor, Dr.Sci.(Tech.); vitkrend@gmail.com
D.Yu. Pankratov, MTUCI, associate professor, Ph.D.; dpankr@mail.ru
A.E. Smirnov, MTUCI, associate professor, Ph.D.; smirnov.al.ed@gmail.com
Keywords: multiple access, NOMA, PDMA, signal structure division, pattern division.
The development of new wireless communication scenarios such as the Internet of Things and Machine-To-Machine increases demands on communications network capacity. Unfortunately, the potential capabilities of Orthogonal Multiple Access (OMA) methods are almost exhausted in cellular communication technologies prior to 5G technology. To improve the quality of communication systems the use of Non-Orthogonal Multiple Access (NOMA) is proposed. In this paper, a study of Pattern Division Multiple Access (PDMA) methods on both uplink and downlink communication systems was conducted. A mathematical description of the PDMA system is given, as well as noise immunity results on the uplink and downlink.
METHODOLOGICAL SUPPORT FOR MODELING OF TROPOSCATTER LINKS. SOFTWARE IMPLEMENTATION AND EXPERIMENTAL RESEARCH
A.A. Minaev, branch FSBI NIIR-SONIIR, head of laboratory, Ph.D.; minaev.aa@soniir.ru
V.Ya. Nikolaeva, branch FSBI NIIR-SONIIR, 1st category engineer; nikolaeva.vy@soniir.ru
A.P. Trofimov, branch FSBI NIIR-SONIIR, leading researcher, Ph.D.; tap@soniir.ru
V.V. Filippov, branch FSBI NIIR-SONIIR, 2nd category engineer; filippof.vv@soniir.ru.
Yu.M. Urlichich, FSBI NIIR, advisor to director general; Dr.Sci.(Tech.); urlichichym@niir.ru
Keywords: tropospheric radio line, Rayleigh fading, Rice fading, Rayleigh distribution, Rice distribution, dual reception, correlation, quantile, communication reliability.
This article is the second and final article of the cycle devoted to the content and results of research carried out at the branch of FSBI NIIR-SONIIR on methodological and software support for automated computer modeling of tropospheric radio lines. The first article «Methodological support for modeling of troposcatter radio lines. Estimation of average energy» was published in the journal «Electrosvyaz», 2023, No. 2. The second article discusses the issues of methodological support in terms of modeling the processes of dual reception in the conditions of Rice fading, as well as their software implementation and the results of experimental studies.
MODELING OF EIRP MASKS OF 5G BASE STATIONS WHEN COEXISTING WITH SPACE RECEIVERS OF FIXED SATELLITE SERVICES IN THE FREQUENCY BAND 6425−7125 MHZ
A.S. Pastukh, FSBI NIIR, head of a laboratory; a.pastukh@niir.ru
Keywords: 5G NR, equivalent isotropically radiated power, EIRP, fixed satellite system, FSS, Monte-Carlo analysis, IMT, total radiated power, TRP.
This article presents explanation of the advantage of limiting the work of 5G base stations using mask of average equivalent isotropically radiated power (EIRP) compared to the total radiated power (TRP) limitation approach. Modeling and construction of the EIRP mask for 5G base stations in the frequency band 6425−7125 MHz were carried out, which allow to achieve the protection of fixed-satellite service systems with minimal restrictions for the operation of 5G networks.
CONFORMAL ANTENNA ARRAY OF THE IONOSPHERIC HEATING FACILITY
M.Yu. Maslov, FSBI Branch NIIR-SONIIR, head of the scientific center, associate professor, Ph.D.; mikem@soniir.ru
Yu.M. Spodobaev, FSBI Branch NIIR-SONIIR, chief researcher, professor, Dr.Sci.(Tech.); spod@soniir.ru
Keywords: auroral zone, heating facility, antenna array, conformity, mobility, segmentation.
The proposed scientific and technical solution makes it possible in principle to create a heating ionospheric facility serving the extended auroral zone of the ionosphere. The technical idea and design of stands, based on two levels of the hierarchy of lattice modules, implements the conformity, mobility and segmentation of the stand.
INVESTIGATION OF THE ELECTRICAL CHARACTERISTICS OF A C-BAND WAVEGUIDE POLARIZER WITH RECTANGULAR IRISES
A.V. Proreshkin, FSBI NIIR, lead engineer; proreshkin@niir.ru
A.A. Gavrilov, FSBI NIIR, deputy head of division, Ph.D.; gavrilov@niir.ru
P.E. Rudenko, FSBI NIIR, 2nd category research engineer; rudenko@niir.ru
Yu.M. Urlichich, FSBI NIIR, advisor to director general; Dr.Sci.(Tech.); urlichichym@niir.ru
Keywords: waveguide polarizer, waveguide device, waveguide path, circular polarization, axial ratio, cross-polar discrimination.
A design of waveguide polarizer with transverse metal irises is described. Critical electric characteristics of polarizer are researched. The technique of precise measurement of polarization characteristics using scattering matrix parameters is presented. The comparison between simulation and measurements is presented. The process of tuning the prototype is described.
DEVELOPMENT OF THE REGULATORY AND LEGAL BASIS OF THE RUSSIAN FEDERATION IN THE INTERESTS OF STATE INFORMATION SYSTEMS
P.I. Antonovich, FSBI NIIR, director of the Internet of Things Research Center (IoTRC), associate professor, Dr.Sci.(Mil.); p.antonovich@niir.ru
A.A. Zaharov, FSBI NIIR, deputy general director for science, associate professor, Ph.D.; a.zaharov@niir.ru
N.V. Korolev, FSBI NIIR, lead engineer of the IoTRC, Ph.D.; korolev@niir.ru
A.M. Puzanov, FSBI NIIR, deputy director of the IoTRC, associate professor, Ph.D.(Mil.); puzanov@niir.ru
Keywords: state information systems, regulatory legal documents, information interaction, modern information technologies, digitalization.
The review of the reflection in regulatory legal documents of the issues of the activities of the Ministry of Digital Development, Communications and Mass Communications of the Russian Federation in terms of information interaction of state information systems providing data collection, storage, processing in the field of information technology and telecommunications.
SIMULATION OF THE ELECTROMAGNETIC ENVIRONMENT FOR THE SELECTION OF LOCATIONS FOR RADIO RECEIVING AND RADIO MEASURING EQUIPMENT
N.V. Lemeshko, JSC Corporation Cometa, head of a department, Dr.Sci.(Tech.); nlem83@mail.ru
S.S. Zaharova, High School of Economics, teacher, Ph.D.; ZaharovaSvetlana@yandex.ru
Keywords: electromagnetic environment, modeling, radio emission source, algorithm.
The article deals with the issue of modeling the electromagnetic environment for the selection of locations for radio receivers and radio measuring equipment. Taking into account the need to limit the complexity of electromagnetic environment models, simple approximations of antenna patterns, as well as criteria for accounting for radio emission sources, are considered. An algorithm for modeling the electromagnetic environment is proposed.
IMPACT OF OPEN VSWITCH VIRTUAL SWITCH ON FLOODLIGHT CONTROLLER PERFORMANCE
S.V. Malakhov, Povolzskiy State University of Telecommunications and Informatics (PSUTI), associate professor of the department of software engineering, Ph.D.; s.malakhov@psuti.ru
D.O. Yakupov, PSUTI, assistance lecturer of the department of software engineering; d.yakupov@psuti.ru
Keywords: virtual switch, OpenFlow protocol, software defined networks, TCP/IP, Floodlight controller, Mininet virtual environment, Open vSwitch, delays, packet loss.
The purpose of the experimental study is to measure packet delays and losses per session in cases where there are no stream records in the switching tables. Also, the dependence of the change in bandwidth method on delays will be investigated, and it is concluded that packets are lost. After conducting the study experimentally, a conclusion will be written about the use of the OpenFlow protocol in the early stages of design for small networks.
