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检索条件"任意字段=Conference on Systems of Signals Generating and Processing in the Field of on Board Communications"

共 537 条记录，以下是361-370 订阅

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Methodology of Design High Heat Flux for On-board Radars of Small-Sized Aircraft

Methodology of Design High Heat Flux for On-Board Radars of ...

引用

systems of signals generating and processing in the field of on board communications

作者： A. V. Starenchenko M. N. Ushkar A. S. Kuznetsov Moscow Aviation Institute (National Research University) Moscow Russia

ISBN: (纸本)9781665415484;9781665446983

The methodology is intended to solve the problem of the layout solutions' optimisation of high heat flux on-board radars' structures of small-sized aircraft forced air cooling systems with a limited air flow. The methodology is characterized by a systematic approach and includes solving the external and internal problem of providing the normal thermal regime of the airborne radar structure via optimizing its layout solutions at the early stages of design. The solution of the external problem is the determination of the permissible aerodynamic drag of the structure, with a restriction on the cooling air flow. The solution of the internal problem is the determination of the optimal layout design. The optimisation criteria is the minimum temperature of the airborne radar components, with a restriction on the aerodynamic drag. The field of application of the results obtained is the systems of forced air cooling of electronic devices and devices operating under conditions of a limited flow of cooling air.

关键词： Heating systems Cooling Airborne radar Layout Aerospace electronics Reliability engineering Aerodynamics

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Digital processing of Noisy signals of Radio Engineering systems with the Selection of Linear and Harmonic Components

Digital Processing of Noisy Signals of Radio Engineering Sys...

引用

2020 systems of signals generating and processing in the field of on board communications

作者： Vasilkov, Yu V. Sovetov, V.A. Perlov, A. Yu Borodin, V.V. Yaroslavl State Technical University Yaroslavl Russia Yaroslavl Higher Military School of Air Defense Yaroslavl Russia Academician A. L. Minz Radiotechnical Institute Moscow Russia Moscow Aviation Institute National Research University Moscow Russia

ISBN: (纸本)9781728147727

The work is devoted to the analysis of digital methods for extracting linear and periodic components in highly noisy signals of radio engineering systems. When analyzing random data, situations often arise when it is necessary to find out whether observations or estimates of signal parameters are statistically independent or whether they are subject to a trend - a monotonic or periodic change in the properties of systems or processes. This problem acquires special significance in the analysis of non-stationary data, in which it is necessary to reliably identify the presence of a trend or identify their parameters against the background of random changes (in single measurements). © 2020 IEEE.

关键词： Random processes

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Digital processing of Radar signals in the Automatic Helicopter Landing System on a Moving Platform

Digital Processing of Radar Signals in the Automatic Helicop...

引用

systems of signals generating and processing in the field of on board communications

作者： A. S. Gribanov D. A. Okhotnikov K. Yu. Bulanov Moscow Aviation Institute (National Research University) Moscow Russia

The paper deals with the problem of landing a helicopter on a moving platform in difficult weather conditions. The article presents a study of the possibility of automatic determination of coordinates, using antennas located on the blades of a helicopter propeller, relative to the landing site where the radio signal sources are located. This arrangement of the antennas when moving in space allows you to measure the distance to the source of the radio signal due to the Doppler shift of the signal frequency. The implementation of such a system can make it possible to solve the most complex aviation tasks to ensure navigation during takeoff/landing in difficult weather conditions, as well as during search and rescue operations. Such a technical solution allows you to get the direction of the radiation source of the radio signal, as well as the range to it with high accuracy.

关键词： Antenna measurements Propellers Blades Helicopters Radio navigation Rotors Radar antennas

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Modeling the Algorithm of Cumulative Sums in the Applied Problems of Detecting the signals with Random Time of Occurrence in non-Gaussian Noise

Modeling the Algorithm of Cumulative Sums in the Applied Pro...

引用

systems of signals generating and processing in the field of on board communications

作者： V. M. Artyushenko V. I. Volovach Technological University Korolev Russia Volga Region State University of Service Togliatty Russia

The methods of mathematical modeling of the cumulative sums algorithm in the problems of detecting signals with a random moment of occurrence in non-Gaussian noise are considered. The probability of false alarm errors and correct detection of imbalance based on the statistical characteristics of the algorithm of cumulative sums obtained by modeling real processes is calculated. An experimental distribution of the cumulative sum in state of imbalance at a current step for detection without reflecting or absorbing screens is obtained. A linear dependence between the means of the cumulative sum taken in separate sections is determined. Based on modeling real processes, the probability of correct detection and false alarm under the influence of non-Gaussian noise with a bimodal distribution is calculated. Effectiveness of cumulative sums algorithm both consistent and inconsistent with the density of the probability distribution of influencing noise is compared.

关键词： Probability distribution Random processes Mathematical model Signal detection

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Connected Vehicle Remote Diagnostic System

Connected Vehicle Remote Diagnostic System

引用

systems of signals generating and processing in the field of on board communications

作者： O.I. Maksimychev E. N. Matiukhina A. V. Ostroukh Y. E. Vasiliev Moscow Automobile and Road Construction State Technical University (MADI) Moscow Russia

The article proposes a Connected Vehicle Remote Diagnostic System, designed for operational monitoring of the technical parameters of the vehicles systems in real time, from anywhere with a connection. This function is achieved by the fact that the data collection and transmission equipment is equipped with an adapter for monitoring the technical and operational parameters of vehicles and transmitting these parameters to the terminal device for subsequent sending to the telematic server, the adapter is connected to the CAN buses through the diagnostic connector in the vehicle and is coordinated with them on the software and hardware level. The system is designed to remotely communicate with owners and maintenance personnel to vehicle and provide vehicle warnings and information, including location, performance and service data, to make decisions about where and how the vehicle is used. The system provides critical system readings of temperature and pressure for specific vehicle functions, including hydraulic, transmission and cooling systems.

关键词： Connected vehicles Cooling Collaboration Organizations Hydraulic systems Maintenance engineering Telematics

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Fractional Power Spectra in Diagnostics of controlled Anishchenko-Astakhov System

Fractional Power Spectra in Diagnostics of controlled Anishc...

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systems of signals generating and processing in the field of on board communications

作者： S.S. Loginov V. V. Afanasiev Kazan National Research Technical University named after A. N. Tupolev - KAI Kazan Russia

The article is devoted to the consideration of the diagnostics of the controlled discrete-nonlinear Anishchenko-Astakhov system by the fractional-power spectra of the signals generated by the system. The conditions for the closeness of the system of fractional power-law functions of time, which reduce the errors in the representation of signals of discrete-nonlinear systems by fractional power series, are determined. The peculiarities of the representation of the signals of the discrete-nonlinear Anishchenko-Astakhov system by pulse sequences with expansion in fractional powers of time are revealed, its adequacy in the analysis of system signals is confirmed. Two-dimensional and three-dimensional fractional-power spectra of the signals of the discrete-nonlinear Anishchenko-Astakhov system have been constructed. The ranges of variation of indicators of fractional powers and normalized pulse durations have been determined. The dependence of the structure of fractional power-law spectra of signals of a controlled discrete-nonlinear Anishchenko-Astakhov system, modified by modulation of time sampling parameters, on the modulation depth of control actions, which reduce the correlation intervals of the generated pseudo-random signals, is revealed.

关键词： Chaos Correlation Modulation Process control Control systems Signal representation Spectral analysis

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Combined Precoding Tehcnique with Antenna Selection for Massive MU-MIMO systems

Combined Precoding Tehcnique with Antenna Selection for Mass...

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systems of signals generating and processing in the field of on board communications

作者： M. G. Bakulin Taoufik Ben Rejeb V. B. Kreyndelin A. E. Smirnov Moscow Technical University of Communications and Informatics Moscow Russia

Frequency plan of the new standard of mobile communication systems 5G New Radio contain a large number of time division duplex bands. At the same time number of antennas in MIMO systems increases at the both sides on base station and on user equipment. The main goal of new technologies applying is to achieve high throughput according new enhanced mobile broadband scenarios: eMBB, uRLLC, mMTC. There are a lot of different methods for spatially signals processing, including precoding, beamforming, space-time codes, antenna selection. We proposed combined precoding technique with antenna selection, based on channel reciprocity principle, implemented in frequency bands with TDD mode. Proposed precoding technique with antenna selection can significantly increase the energy efficiency of multi-antenna systems with antenna configurations of the considered type, where user equipment has a large number of antennas. In addition, the proposed precoding algorithm has a low computational complexity and does not require the high efficiency feedback channel.

关键词： Time-frequency analysis Space-time codes Precoding Ultra reliable low latency communication Throughput New Radio Energy efficiency

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International Training Programs IT Security System for Specialists in Onboard systems

International Training Programs IT Security System for Speci...

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systems of signals generating and processing in the field of on board communications

作者： E. D. Romashkova O. N. Romashkova The Russian Federation Government Analytical Center Moscow Russia Russian Presidential Academy of National Economy and Public Administration (RANEPA) Moscow Russia

The relevance of the research topic of this article is due to the fact that the problem of developing and implementing distance learning technologies in the field of higher education is particularly acute for the Russian education system due to increasing requirements for the quality, volume and pace of the educational process and dissatisfaction with the existing system of higher education. The primary task in the process of implementation and functioning of distance learning mechanisms is to ensure information security. The authors developed models and processes of activities related to distance learning at the University. The problems of information protection in the developed models are solved using the most modern technologies and approaches. An important aspect of the educational activity of a modern University is the implementation of training programs with the possibility of obtaining two state diplomas. Such programs involve training in internal or external exchange, and widely use remote technologies.

关键词： Training Computer aided instruction Information security Task analysis

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The Effect of the Use of Service Level Agreement for Operators of Transport systems and On-board systems

The Effect of the Use of Service Level Agreement for Operato...

引用

systems of signals generating and processing in the field of on board communications

作者： A. L. Zubilevich S. A. Sidney V. A. Tsarenko Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (纸本)9781665415484;9781665446983

Fiber-optic communication lines are the basis of telecommunication networks. If at the initial stage of the development of optical communication FOCLs were laid only on transport networks, then as this type of communication develops, there is a transition to fiber-optic technology in intra-facility, including on-board systems. Today, the demand for traffic transmission is constantly growing, which leads to an increase in the amount and speed of transmitted information. Fiber outages result in poor communications, disrupt business processes, backorders, and dissatisfied customers. Even small communication downtime causes huge losses. The introduction of service quality categories will simplify the operation of transport systems and increase the economic efficiency of communication networks. However, this requires significant capital expenditures and annual operating costs, which do not always pay off by avoiding fiber downtime. A method for assessing the effectiveness of the use of a service level agreement (SLA) between an operator of a fiber-optic communication line (FOCL) and consumers of communication services is proposed. The net present value (NPV) is used as an indicator of efficiency; probabilistic characteristics are introduced. The calculation results and their brief analysis are presented.

关键词： Economics Optical fiber networks Probabilistic logic communications technology Communication networks Service level agreements Business

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Automation of the Learning Process of a Neural Network as Classifier in the Formation of a Design Basis of Complex Transport systems

Automation of the Learning Process of a Neural Network as Cl...

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2020 systems of signals generating and processing in the field of on board communications

作者： Kuznetsov, A.S. Kuznetsov, S.N. Ushkar, M.N. Moscow Aviation Institute National Research University Moscow Russia

ISBN: (纸本)9781728147727

The method of the automation of the learning process of a neural network as classifier is considered in this paper. This method is based on using the developed algorithm and programs that automatically generate training examples. For this purpose, the methodology of planning a full factorial experiment is used. The classifier is software complex, which includes: a database, a multilayer perceptron, as well as a block of programs providing automatic learning of perceptron. Application neural network as classifier with automated learning allows significantly reduce time spent on the formation of a constructive basis for complex transport systems. © 2020 IEEE.

关键词： Complex networks

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