Bibliografías temáticas / Radio equipment

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Literatura académica sobre el tema "Radio equipment"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 29 de julio de 2024

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Artículos de revistas sobre el tema "Radio equipment"

DeMott, Kathryn. "Radio ID Devices Zap Equipment". Caring for the Ages 9, n.º 7 (julio de 2008): 4. http://dx.doi.org/10.1016/s1526-4114(08)60177-8.

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Xue, Jun, Jian Hua Zou, Yong Liang Zhang y Xin Bing Fang. "Design and Implementation of Radio Spreading-Sequences Beacon Based on Quadrature Frequency-Conversion". Advanced Materials Research 605-607 (diciembre de 2012): 1984–88. http://dx.doi.org/10.4028/www.scientific.net/amr.605-607.1984.

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Radio beacon is required for dynamic self-test of vessel carrier's radio measuring and controlling equipment. Also it is required to process angle-adjusting of the equipment. The paper proposes a kind of method to design beacon based on quadrature frequency-conversion technology. The parameters of the beacon can been set flexibly through MCU control. Sidebands and local oscillator’s leakage are suppressed in circuit implementation. The beacon works reliable and its performance meets requirements. Real application shows fair result. The beacon supports technically naval adjustment of vessel carrier's radio measuring and controlling equipments.

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Gordyaskina, Tatyana V. y Lyudmila S. Grosheva. "THE SHIP'S RECEIVING AND TRANSMITTING EQUIPMENT ELEMENTS RESEARCH BASED ON THE TMS320C5510 SIGNAL PROCESSOR". Russian Journal of Water Transport, n.º 63 (1 de junio de 2020): 40–47. http://dx.doi.org/10.37890/jwt.vi63.74.

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Ship's radio equipment, produced on a modern digital basis, is used as equipment for the global Maritime disaster communication system( GMDSS), vehicle traffic control systems and dangerous proximity warnings, radar and radio navigation systems. The article presents the synthesis and research method concerning the principles of functioning the professional activity objects in relation to specialists in transport radio equipment technical operation related to the example of radio receiving and transmitting devices (GMDSS )equipment block based on the digital signal processor TMS320C5510. In the mastering the technique process, students of the «Transport radio equipment technical operation», specialty master professional competencies, get theoretical and practical skills of synthesis, technical diagnostics and ship radio equipment maintenance .

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Popa, Robert. "Electromagnetic Susceptibility Measurement of Military Radio Electronic Equipment". Journal of Military Technology 3, n.º 1 (26 de junio de 2020): 17–22. http://dx.doi.org/10.32754/jmt.2020.1.03.

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Whereas the EMC of a piece of equipment represents a requirement which must be fulfilled according to the applicable EMC standards, in order not to disturb the functionality of other devices, the EMS of that equipment has the same importance, since its prime purpose is to perform and to achieve the scope for which it was designated. Thus, the measurement of the equipment’s EMS became an important aspect to be considered by any manufacturer, because, on the opposite side, any buyer will be very focused to check, before buying, the compliance of equipment with the Standards provisions on EMS matter. This article provides a synthetic updated overview of the main aspects related with the EMS test conditions, test methods and results interpretation, from the Military Standards prospective.

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Tiridatov, Sergey Aleksandrovich, Vasiliy Aleksandrovich Mokhov y Anastasiya Sergeyevna Kobylnichenko. "ABOUT EQUIPMENT OF RADIO CONTROL MODELS". Economy. Business. Computer science, n.º 3 (1 de enero de 2016): 1–7. http://dx.doi.org/10.19075/2500-2074-2016-3-1-7.

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Green, L. B. "Electromagnetic compatibility of radio telecommunications equipment". IEE Proceedings - Science, Measurement and Technology 141, n.º 4 (1994): 244. http://dx.doi.org/10.1049/ip-smt:19941143.

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Vasylieva, Olena, Yurii Pavlenko y Valeriy Ogar. "Calibration complex of radio measuring equipment". Ukrainian Metrological Journal, n.º 2 (25 de junio de 2024): 10–17. http://dx.doi.org/10.24027/2306-7039.2.2024.307137.

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Modern trends in the development of radio measuring equipment require improvement of the principles of metrological support of these devices and corresponding reference base. The new approach is based on the digitalisation of equipment, programming of measurement procedures, and the transition from single measurement standards to measurement complexes. The paper describes the complex developed at the NSC “Institute of Metrology” and designed for verification and calibration of a wide range of radio measuring equipment, where all these approaches are realised, presents methodological, software and hardware features of its construction, as well as the advantages and possibilities of this approach in metrological practice. On the example of the method of “Bessel Function Zeros”, which was somewhat forgotten due to the cumbersome nature of its implementation by analogue methods and equipment, it is shown that with the new approach this method gets a “second birth”, moreover, at a higher metrological level. It is shown that the use of direct digital synthesis oscillators can significantly improve the “electronic counting frequency meter” method, in particular, prevent the phenomenon of “frequency capture”, which limited the capabilities of the method and introduced additional measurement uncertainty. Moreover, the additional properties of the complex associated with the use of the R&S FSL spectrum analyser with the K7 analogue signal demodulator option are explained in more detail. A list of other methods realised in the complex is given, among which the “combination frequencies” method, deserves a special attention, providing the highest resolution in measuring nonlinear distortions of both quasi-harmonic and modulated signals. It is shown that the complex is a flexible apparatus, the work programme of which can be adjusted and supplemented. Information on the structure of the complex, hardware solution of a number of nodes, programming language, etc. is given.

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Solomentse, Oleksandr, Tetyana Herasymenko, Olena Kozhokhina, Yuliia Petrova y Maksym Zaliskyi. "EFFICIENCY OF OPERATIONAL DATA PROCESSING FOR RADIO ELECTRONIC EQUIPMENT". Aviation 23, n.º 3 (17 de enero de 2020): 71–77. http://dx.doi.org/10.3846/aviation.2019.11849.

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The paper deals with the statistical data processing algorithms in operation system of radio electronic equipment. The main purpose is analysis of data processing algorithm efficiency according to the analytical calculations and simulation results. During radio electronic equipment operation failures are possible. These failures affect on the equipment’s technical condition that can deteriorate. In case of condition-based maintenance, it is necessary to detect the time moment of deterioration beginning. Therefore, in this paper the deterioration detection algorithm was developed according to Neyman-Pearson criterion with a fixed sample size. The initial data are times between failures of radio electronic equipment, and these data can be identified by the exponential probability density function. The step-function model was chosen for failure rate change description. To estimate efficiency the operating characteristic was calculated. The simulation based on Monte-Carlo method confirmed the correctness of theoretical calculations.

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Ivanyushkin, Roman Yu y Albert Waal. "THE COMPUTER MODELING OF CLASS -D AND -DE SWITCHING-MODE POWER AMPLIFIERS FOR VHF DIGITAL RADIO BROADCAST EQUIPMENT". SYNCHROINFO JOURNAL 9, n.º 4 (2023): 21–25. http://dx.doi.org/10.36724/2664-066x-2023-9-4-21-25.

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Currently the transition to digital VHF radio broadcasting is being discussed more and more in different countries, which requires the design of new radio broadcast equipment devices. In classical method of amplifying the power of complex radio signals with a variable envelope, the new broadcast equipment will lose significantly to the existing broadcast equipment with frequency-modulated signal in many energy parameters. The most the promising ways to build high-efficiency broadcast equipment devices of complex radio signals with amplitude-phase modulation and high peak-factor are synthetic methods of linear amplification of radio frequency power (for example, basing on the scheme of L. Kahn) by using high-efficiency switching-mode circuits of powerful amplification. The present state of development of powerful radio-frequency transistors allows to assume that in the near future in the VHF-band switching-mode power amplifiers of Class -D and -F, which will be suitable for building digital radio broadcast equipment with the polar architecture of L. Kahn, will be everywhere used. These switching-mode amplifiers, in contrast to higher-frequency Class-E circuits, supply more steady characteristics in the frequency band. But when developing such broadcast equipment, it is also reasonable to deal with modified switching-mode power amplifiers of the Class -DE and -FE. The article deals with the questions of the computer modeling of switching- mode power amplifiers of Class -D and -DE in relation to the design of VHF radio broadcast equipment.

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Bogucki, Jan y Ewa Wielowieyska. "Reliability of line-of-sight radio-relay systems". Journal of Telecommunications and Information Technology, n.º 1 (30 de marzo de 2006): 87–92. http://dx.doi.org/10.26636/jtit.2006.1.352.

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The modern radio transmission systems are specifically designed for catching principally two main objectives: on one side to provide a radio solution for long distance where large configurations are required to fulfill the high capacity transmissions needs, on the other side to guarantee link quality as high as possible. The availability of a radio-relay system is dependent upon many factors and particularly upon: the reliability of equipment and propagation conditions. The article describes the wave propagation and equipment that determine the performance of a radio-relay path. National Institute of Telecommunications (NIT) carried out research on propagation phenomena on terrestrial path and exemplary results are described herewith. The availability of radio equipment based on the mean time between failures for equipment modules is presented too.

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Tesis sobre el tema "Radio equipment"

Flood, Ian. "Graph theoretic methods for radio equipment selection". Thesis, Cardiff University, 2013. http://orca.cf.ac.uk/50910/.

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In the 1970s and 1980s, a small group of American engineers recognised the importance of the graph-colouring ideas studied by mathematicians and the potential for these ideas to be used in practical radio frequency assignment procedures. Some groundbreaking work led to a long period of study in academia where many variants on the Frequency Assignment Problem have been considered and some advanced algorithms developed. This thesis has investigated the Frequency Assignment Problem for microwave fixed links and, taking account of the constraints experienced in professional practice, extended this to include the problem of Equipment Selection. For a particular data-rate, standard radio equipment using relatively lower-or higher order modulation schemes can be deployed by the fixed link operator. While the higher-order options use less bandwidth, they radiate at higher powers and require more protection in the radio interference environment. That is, they are more potent interferers and present a greater challenge to distant interferers. Therefore, when the assigner’s objective is to minimise the span of frequencies used by a network, the higher-order modulation radio is not always the most spectrally efficient. The thesis has hypothesised that by doubling the bandwidth requirement on selected links, the assigner can actually reduce the overall span of frequencies used to support a frequency assignment for the entire network. With a minimum span objective, fixed link deployment scenarios have been exposed to a standard IP Solver that gives exact solutions. Using graph-theoretic methods, equipment selection heuristics have been developed and tested in offline and online environments. This work has gathered significant evidence in support of the hypothesis.

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Törnberg, Pontus. "GNSS independent navigation using radio navigation equipment". Thesis, Luleå tekniska universitet, Rymdteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-81212.

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This thesis studies algorithms to estimate an aircraft’s position with different information from various radio stations. Because aircrafts both civilian and military are heavily dependant on GNSS signals, it can be interfered from hostile sources. The aircraft shall then be able to navigate without the GNSS signals. This thesis focuses on three radio navigation systems, DME,VOR and TACAN. With the measurements from these three radio stations and measurements from the inertial navigation system one can estimate a position with an estimation filter. In this thesis two types of filters will be used, the linear Kalman filter and the Extended Kalman filter. The linear Kalman filter will be used when converting the TACAN measurements to a pseudo position and the Extended Kalman filter will be used for the DME,VOR and TACAN measurements. The results shows that the converted TACAN measurements and TACAN measurements estimates very well in both north and east direction. When using only DME measurements the filter estimates the position fairly well in the direction towards the station and poorly in the orthogonal direction. For the VOR measurements the filter estimates the position quite poorly in the direction of the radio station and well in the orthogonal direction. In conclusion the converted TACAN measurement and TACAN measurement algorithm can be used for navigation purposes by its own measurements. However, the DME and VOR measurement algorithms need to be combined or using multiple stations at different locations to get better estimates in both directions. All of the filter could use some better tuning to get the optimal filter, but it is not necessary.

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Sanchez, Joaquin A., Richard A. Nixon, Sergio Chávez, Joaquin A. Sanchez, Richard A. Nixon y Sergio Chávez. "Medical equipment management through the use of radio frequency identification (RFID)". Thesis, Monterey, California. Naval Postgraduate School, 2004. http://hdl.handle.net/10945/9914.

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MBA Professional Report
Approved for public release, distribution is unlimited
MBA Professional Report
Approved for public release, distribution is unlimited
The purpose of this MBA project is to identify the potential value of Radio Frequency Identification (RFID) use in the management of medical equipment at Naval Medical Center San Diego (NMCSD). In doing so, our project seeks to derive potential benefits through the use of RFID technology by comparing a group of medical equipment items that are tracked within NMCSD. The project includes a discussion of additional potential uses of RFID infrastructure within the Military Healthcare System, and possible resulting benefits. Ultimately, the project will determine the financial viability and practicality of implementing RFID.
The purpose of this MBA project is to identify the potential value of Radio Frequency Identification (RFID) use in the management of medical equipment at Naval Medical Center San Diego (NMCSD). In doing so, our project seeks to derive potential benefits through the use of RFID technology by comparing a group of medical equipment items that are tracked within NMCSD. The project includes a discussion of additional potential uses of RFID infrastructure within the Military Healthcare System, and possible resulting benefits. Ultimately, the project will determine the financial viability and practicality of implementing RFID.

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Latief, Tauriq. "The design of a two-element radio interferometer using satellite TV equipment". Master's thesis, Faculty of Engineering and the Built Environment, 2021. http://hdl.handle.net/11427/33756.

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This research presents the design of a two-element radio interferometer capable of performing complex correlation. With the development of sophisticated radio astronomy instruments, particularly in South Africa, there is a need to develop an affordable educational instrument which can be used to demonstrate the fundamental concepts of radio interferometry to university students. The mass production of satellite TV equipment has resulted in relatively sensitive radio frequency (RF) equipment such as parabolic reflector dishes and low-noise block down-converters (LNBs) being available at significantly reduced costs. This served as the front-end of the interferometer which was used to observe the sun between 10.70 GHz - 12.75 GHz (RF). The LNB then down-converted these to an intermediate frequency (IF) between 0.95 GHz - 2.15 GHz. The LNBs were modified to make use of a common 25 MHz reference, which ensured that the observed fringes were only as a result of the source's geometric time delay. A power detector was also designed since the adding interferometer architecture was chosen. This power detector included the Analog Devices LT 5534 power detector integrated circuit (IC) and a Teensy 3.6 microcontroller. The calibrated power detector could detect signals as weak as - 60 dBm and showed less than 21 mV error in output for input signals in the range [- 50 dBm, -30 dBm]. The modified LNBs experienced issues, in particular the presence of a spurious LO signal, which distorted initial observations of the sun. This was resolved by the design and manufacture of narrowband hairpin filters and quarterwavelength stub filters which were used to isolate the IF band between 1.05 GHz - 1.15 GHz (corresponding RF between 10.80 GHz - 10.90 GHz). This also improved the interferometer's resolution. A series of filter-integrated Wilkinson power dividers and branchline couplers were designed to filter and further separate signals into in-phase and quadrature-phase (I-Q) components - these were required for complex correlation. The integrated quarter-wavelength stub filter and Wilkinson power divider achieved a maximum amplitude imbalance of 0.13 dB and phase imbalance of 0.9◦ between output ports. The integrated quarter-wavelength stub filter and branchline coupler achieved a maximum amplitude imbalance of 0.13 dB and phase imbalance of 91.1◦ between output ports. These results closely agreed with the simulated performance. First light was observed on the 5th December 2020 when the sun was successfully detected using the coherent two-element interferometer along a 1.1 m baseline. Other tests included using the observed fringe phase to verify the physical baseline. A theoretical baseline of 1.11 m was calculated for a physical baseline of 1.3 m indicating an error of less than 0.2 m. The sun's fringe frequency and amplitude was also observed for varying baselines - the sun was resolved along a 3 m baseline. Finally, full-system observations of the sun were conducted. These included observing the sun's cosine and sine fringes, which indicated that the analogue complex correlator was operating correctly. Thus, the primary goal of this project had been fulfilled. Specifically, developing a low-cost, educational two-element radio interferometer capable of detecting the sun.

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Aggarwal, Rebecca. "An agent approach to improving radio frequency identification enabled Returnable Transport Equipment". Thesis, Aston University, 2014. http://publications.aston.ac.uk/23175/.

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Returnable transport equipment (RTE) such as pallets form an integral part of the supply chain and poor management leads to costly losses. Companies often address this matter by outsourcing the management of RTE to logistics service providers (LSPs). LSPs are faced with the task to provide logistical expertise to reduce RTE related waste, whilst differentiating their own services to remain competitive. In the current challenging economic climate, the role of the LSP to deliver innovative ways to achieve competitive advantage has never been so important. It is reported that radio frequency identification (RFID) application to RTE enables LSPs such as DHL to gain competitive advantage and offer clients improvements such as loss reduction, process efficiency improvement and effective security. However, the increased visibility and functionality of RFID enabled RTE requires further investigation in regards to decision‐making. The distributed nature of the RTE network favours a decentralised decision‐making format. Agents are an effective way to represent objects from the bottom‐up, capturing the behaviour and enabling localised decision‐making. Therefore, an agent based system is proposed to represent the RTE network and utilise the visibility and data gathered from RFID tags. Two types of agents are developed in order to represent the trucks and RTE, which have bespoke rules and algorithms in order to facilitate negotiations. The aim is to create schedules, which integrate RTE pick‐ups as the trucks go back to the depot. The findings assert that: -agent based modelling provides an autonomous tool, which is effective in modelling RFID enabled RTE in a decentralised format utilising the real‐time data facility. ‐ the RFID enabled RTE model developed enables autonomous agent interaction, which leads to a feasible schedule integrating both forward and reverse flows for each RTE batch. ‐ the RTE agent scheduling algorithm developed promotes the utilisation of RTE by including an automatic return flow for each batch of RTE, whilst considering the fleet costs and utilisation rates. ‐ the research conducted contributes an agent based platform, which LSPs can use in order to assess the most appropriate strategies to implement for RTE network improvement for each of their clients.

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Tigga, Celine. "Modelling of Measurement Equipment for High Frequency Electromagnetic Fields". Thesis, Högskolan i Gävle, Avdelningen för elektronik, matematik och naturvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-18894.

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The aim of this thesis was to develop a model of a receiver which could be quickly used to analyze radiated interference levels from data captured at the output of the antenna equipment used to measure radiated energy. Active circuits were mainly used in developing this model for the ease with which the design and simulations could be carried out in OrCAD. The guiding document for the thesis work has been CISPR 16-1-1 (International Special Committee on Radio Interference part 16-1-1) which specifies the characteristics and performance of equipment for the measurement of radiated interference. The testing of this receiver model was carried out as far as possible based on the test setups recommended in CISPR, and all results have been compared with the standards laid down for the model. Using the results, it will be shown that a CISPR EMI receiver can be modeled as a simple EMI receiver consisting of filtering, mixing and detecting circuits built according to specifications.

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Price, Alfred W. "The evolution of electronic warfare equipment and techniques in the USA, 1901 to 1945". Thesis, Loughborough University, 1985. https://dspace.lboro.ac.uk/2134/7410.

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This work describes the evolution cf electronic warfare equipment and techniques in the USA, from the first instance of radio jamming in that country in 1901 until the end of World War II in 1945. It begins with a review of early work on telegraph, radio and radar systems throughout the world, and countermeasures used during trials or in combat prior to World War II. Immediately after the USA ertered the conflict in 1941, the Radio Research Laboratory was set up near Boston to develop radio countermeasures equipment for the US armed forces. The organisation rapidly outgrew the capacity of a angle laboratory and in October 1942 Division 15 of the National Defense Research Committee was formed, to co-ordinate US work on countermeasures. The activities of RRL and Division 15 are described in detail, using cortemporary records and accounts from participants. Radar jammers developed by Divison 15 were first used in action in July 1943 during the invason of Sicily, and went on to play important roles in support amphibious landings and strategic bombing operations in the European and Pacific theatres of operations. The jamming devices and tactics employed, the enemy attempts to develop counter-countermeasures and the US moves to counter these counters are all described in detail. Conclusions are drawn on the effectiveness of the various types of jamming, based on post-war interrogation of German and Japanese serving officers and technical personnel. Appendices give technical details of the countermeasures devices produced in the USA during World War II, and the development of radar and radar countermeasures in Germany and Japan.

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Rosa, Tiago Miguel Simões. "Flexible LTE user equipment". Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/23753.

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Mstrado em Engenharia Eletrónica e Telecomunicações
As redes móveis estão em constante evolução. A geração atual (4G) de redes celulares de banda larga e representada pelo standard Long Term Evolution (LTE), definido pela 3rd Generation Partnership Project (3GPP). Existe uma elevada procura/uso da rede LTE, com um aumento exponencial do número de dispositivos móveis a requerer uma ligação à Internet de alto débito. Isto pode conduzir à sobrelotação do espetro, levando a que o sinal tenha que ser reforçado e a cobertura melhorada em locais específicos, tal como em grandes conferências, festivais e eventos desportivos. Por outro lado, seria uma vantagem importante se os utilizadores pudessem continuar a usar os seus equipamentos e terminais em situações onde o acesso a redes 4G é inexistente, tais como a bordo de um navio, eventos esporádicos em localizações remotas ou em cenários de catástrofe, em que as infraestruturas que permitem as telecomunicações foram danificadas e a cobertura temporária de rede pode ser decisiva em processos de salvamento. Assim sendo, existe uma motivação clara por trás do desenvolvimento de uma infraestrutura celular totalmente reconfigurável e que preencha as características mencionadas anteriormente. Uma possível abordagem consiste numa plataforma de rádio definido por software (SDR), de código aberto, que implementa o standard LTE e corre em processadores de uso geral (GPPs), tornando possível construir uma rede completa investindo somente em hardware - computadores e front-ends de radiofrequência (RF). Após comparação e análise de várias plataformas LTE de código aberto foi selecionado o OpenAirInterface (OAI) da EURECOM, que disponibiliza uma implementação compatível com a Release 8.6 da 3GPP (com parte das funcionalidades da Release 10). O principal objectivo desta dissertação é a implementação de um User Equipment (UE) flexível, usando plataformas SDR de código aberto que corram num computador de placa única (SBC) compacto e de baixa potência, integrado com um front-end de RF - Universal Software Radio Peripheral (USRP). A transmissão de dados em tempo real usando os modos de duplexagem Time Division Duplex (TDD) e Frequency Division Duplex (FDD) é suportada e a reconfiguração de certos parâmetros é permitida, nomeadamente a frequência portadora, a largura de banda e o número de Resource Blocks (RBs) usados. Além disso, é possível partilhar os dados móveis LTE com utilizadores que estejam próximos, semelhante ao que acontece com um hotspot de Wi-Fi. O processo de implementação é descrito, incluindo todos os passos necessários para o seu desenvolvimento, englobando o port do UE de um computador para um SBC. Finalmente, a performance da rede é analisada, discutindo os valores de débitos obtidos.
Mobile networks are constantly evolving. 4G is the current generation of broadband cellular network technology and is represented by the Long Term Evolution (LTE) standard, de ned by 3rd Generation Partnership Project (3GPP). There's a high demand for LTE at the moment, with the number of mobile devices requiring an high-speed Internet connection increasing exponentially. This may overcrowd the spectrum on the existing deployments and the signal needs to be reinforced and coverage improved in speci c sites, such as large conferences, festivals and sport events. On the other hand, it would be an important advantage if users could continue to use their equipment and terminals in situations where cellular networks aren't usually available, such as on board of a cruise ship, sporadic events in remote locations, or in catastrophe scenarios in which the telecommunication infrastructure was damaged and the rapid deployment of a temporary network can save lives. In all of these situations, the availability of exible and easily deployable cellular base stations and user terminals operating on standard or custom bands would be very desirable. Thus, there is a clear motivation for the development of a fully recon gurable cellular infrastructure solution that ful lls these requirements. A possible approach is an open-source, low-cost and low maintenance Software-De ned Radio (SDR) software platform that implements the LTE standard and runs on General Purpose Processors (GPPs), making it possible to build an entire network while only spending money on the hardware itself - computers and Radio-Frequency (RF) front-ends. After comparison and analysis of several open-source LTE SDR platforms, the EURECOM's OpenAirInterface (OAI) was chosen, providing a 3GPP standard-compliant implementation of Release 8.6 (with a subset of Release 10 functionalities). The main goal of this dissertation is the implementation of a exible opensource LTE User Equipment (UE) software radio platform on a compact and low-power Single Board Computer (SBC) device, integrated with an RF hardware front-end - Universal Software Radio Peripheral (USRP). It supports real-time Time Division Duplex (TDD) and Frequency Division Duplex (FDD) LTE modes and the recon guration of several parameters, namely the carrier frequency, bandwidth and the number of LTE Resource Blocks (RB) used. It can also share its LTE mobile data with nearby users, similarly to a Wi-Fi hotspot. The implementation is described through its several developing steps, including the porting of the UE from a regular computer to a SBC. The performance of the network is then analysed based on measured results of throughput.

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Brown, Keith Edgar. "The application of knowledge-based techniques to fault diagnosis of 16 QAM digital microwave radio equipment". Thesis, University of Edinburgh, 1988. http://hdl.handle.net/1842/12958.

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Mainini, Kevin. "Reducing Radio Frequency Susceptibilities in Commercial-Off-the-Shelf Camera Equipment for use in Electromagnetic Compatibility Testing". Digital Commons @ East Tennessee State University, 2015. https://dc.etsu.edu/etd/2484.

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The Technical Testing and Analysis Center (TTAC) Group at Oak Ridge National Laboratory performs electromagnetic compatibility testing on various radiation detection units. These tests require remote viewing of the equipment’s display to monitor its compliance with national and international standards. The Commercial-Off-the-Shelf (COTS) camera equipment that is used to monitor the displays exhibits radio frequency susceptibilities causing issues when determining the actual susceptibilities of the device under test. In order to mitigate this issue, a COTS camera was placed in two common test positions and cycled through three angled orientations with various radio frequency shielding methods applied. The development of these shielding methods was investigated in this thesis. The goal was to reduce the number of susceptible frequencies. The reduction of susceptibilities would greatly increase the viewing capacity of the cameras during testing. The techniques discovered have allowed for other COTS camera equipment to be modified and used effectively during electromagnetic compatibility testing.

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Más fuentes

Libros sobre el tema "Radio equipment"

Powell, James. Aircraft radio systems. Casper, WY: IAP, 1993.

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Jones, L. Thomas. Trunked radio systems. Washington, D.C: U.S. Dept. of Justice, Office of Justice Programs, National Institute of Justice, Technology Assessment Program, 1993.

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Powell, J. Aircraft radio systems. London: Pitman, 1985.

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Dvornikov, Sergey Viktorovich, Alexander Fedotovich Kryachko, Igor Anatolyevich Velmisov y Dmitry Alexandrovich Zatuchny. Radio-Electronic Equipment in Civil Aviation. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-6199-1.

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S, Gross Lynne, ed. Radio production worktext: Studio and equipment. 3^a ed. Boston: Focal Press, 1998.

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E, Reese David, ed. Radio production worktext: Studio and equipment. 2^a ed. Boston: Focal Press, 1993.

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Rembovsky, Anatoly. Radio Monitoring: Problems, Methods and Equipment. Boston, MA: Springer-Verlag US, 2009.

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Gross, Lynne S. Radio production worktext: Studio and equipment. Boston: Focal Press, 1990.

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Gross, Lynne S. Radio production worktext: Studio and equipment. 2^a ed. Boston: Focal, 1994.

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S, Gross Lynne, ed. Radio production worktext: Studio and equipment. 4^a ed. Boston, MA: Focal Press, 2002.

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Capítulos de libros sobre el tema "Radio equipment"

Weik, Martin H. "radio frequency equipment". En Computer Science and Communications Dictionary, 1402. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_15371.

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Gage, Linda, Lawrie Douglas y Marie Kinsey. "Equipment". En A Guide to Commercial Radio Journalism, 1–8. London: Routledge, 2023. http://dx.doi.org/10.4324/9781032645308-1.

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Skomal, Edward N. y Albert A. Smith. "Receiving Equipment". En Measuring the Radio Frequency Environment, 233–75. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-011-7059-8_7.

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Gage, Linda, Lawrie Douglas y Marie Kinsey. "Using the equipment". En A Guide to Commercial Radio Journalism, 9–16. London: Routledge, 2023. http://dx.doi.org/10.4324/9781032645308-2.

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Abeyratne, Ruwantissa. "Article 30 Aircraft Radio Equipment". En Convention on International Civil Aviation, 349. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00068-8_31.

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Georghiou, Luke, J. Stanley Metcalfe, Michael Gibbons, Tim Ray y Janet Evans. "GEC Telecommunications: Semiconductored Radio Equipment". En Post-Innovation Performance, 176–80. London: Palgrave Macmillan UK, 1986. http://dx.doi.org/10.1007/978-1-349-07455-6_18.

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Dvornikov, Sergey Viktorovich, Alexander Fedotovich Kryachko, Igor Anatolyevich Velmisov y Dmitry Alexandrovich Zatuchny. "Range Radio Receiving Devices". En Radio-Electronic Equipment in Civil Aviation, 99–127. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-6199-1_5.

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Lees, G. D. y W. G. Williamson. "Safety-related equipment and services". En Handbook for Marine Radio Communication, 65–88. 7^a ed. London: Informa Law from Routledge, 2022. http://dx.doi.org/10.4324/9781003171294-4.

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Dvornikov, Sergey Viktorovich, Alexander Fedotovich Kryachko, Igor Anatolyevich Velmisov y Dmitry Alexandrovich Zatuchny. "Radio Receivers of Pulse Signals". En Radio-Electronic Equipment in Civil Aviation, 45–62. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-6199-1_3.

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Woodruff, Graham. "Design and Equipment". En Drama and the Theatre with Radio, Film and Television, 104–31. London: Routledge, 2023. http://dx.doi.org/10.4324/9781003398790-6.

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Actas de conferencias sobre el tema "Radio equipment"

Shelkovnikov, B. N., V. S. Mahonya, A. I. Peshkov, V. L. Lomaka, V. N. Ivanov, V. G. Ivashkevich y A. M. Korennoy. "Radio-relay equipment "GELIOS-RRL"". En 2000 10th International Crimean Microwave Conference. Microwave and Telecommunication Technology. Conference Proceedings. IEEE, 2000. http://dx.doi.org/10.1109/crmico.2000.1256086.

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Fofanov, D. A., T. N. Bakhvalova, A. V. Alyoshin, M. E. Belkin y A. S. Sigov. "Studying Microwave-Photonic Frequency Up-Conversion for Telecom and Measurement Equipment". En 2018 IEEE Radio and Antenna Days of the Indian Ocean (RADIO). IEEE, 2018. http://dx.doi.org/10.23919/radio.2018.8572474.

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Obe, P. K. "Radio access architectures and equipment approaches". En IEE Colloquium on Local Loop Fixed Radio Access. IEE, 1995. http://dx.doi.org/10.1049/ic:19951478.

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Parris, R. J. "“Chameleon radio” multi standard international ground to train radio equipment". En International Conference on Electric Railways in a United Europe. IEE, 1995. http://dx.doi.org/10.1049/cp:19950192.

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Kebel, Robert, Uwe Schwark y Martin Schirrmacher. "Aviation Equipment and the Application of the Radio Equipment Directive (RED)". En 2019 ESA Workshop on Aerospace EMC (Aerospace EMC). IEEE, 2019. http://dx.doi.org/10.23919/aeroemc.2019.8788924.

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Litinskaya, Ye A., K. V. Lemberg, A. S. Ivanov, A. M. Alexandrin, S. V. Polenga y Yu P. Salomatov. "Antenna Measurement Equipment for Radio Engineering Education". En 2018 IV International Conference on Information Technologies in Engineering Education (Inforino). IEEE, 2018. http://dx.doi.org/10.1109/inforino.2018.8581835.

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Ashikhmin, A. V., V. V. Glotov, V. N. Kostrova, Yu G. Pasternak y S. M. Fedorov. "Broadband Antennas for Portable Radio Monitoring Equipment". En 2020 International Multi-Conference on Industrial Engineering and Modern Technologies (FarEastCon). IEEE, 2020. http://dx.doi.org/10.1109/fareastcon50210.2020.9271445.

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Maturazov, Izzat y Abdurashid Abdukayumov. "Improvement of radio electronic equipment diagnostic system". En 2021 ASIA-PACIFIC CONFERENCE ON APPLIED MATHEMATICS AND STATISTICS. AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0090223.

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Koster, Steve. "Tutorial — wireless device approvals radio equipment directive". En 2017 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI). IEEE, 2017. http://dx.doi.org/10.1109/isemc.2017.8078124.

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Mazzanti, Giovanni, Leonardo Sandrolini, Marco Landini, Effrosyni Kandia, Alessandro Tacchini y Flavio Corradini. "Fault detection of electrical equipment by rapid calculation of the magnetic field from single-circuit twisted three-phase cables". En 2017 IEEE Radio and Antenna Days of the Indian Ocean (RADIO). IEEE, 2017. http://dx.doi.org/10.23919/radio.2017.8242243.

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Informes sobre el tema "Radio equipment"

Gore, Perry. Equipment Highlights: Radio Interface Units. Fort Belvoir, VA: Defense Technical Information Center, septiembre de 1988. http://dx.doi.org/10.21236/ada200487.

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REDSTONE TEST CENTER REDSTONE ARSENAL AL. Electromagnetic Radiation Hazards Testing for Non-Ionizing Radio Frequency Transmitting Equipment. Fort Belvoir, VA: Defense Technical Information Center, diciembre de 2012. http://dx.doi.org/10.21236/ada577863.

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D.J. Geveke, M. Kozempel y C. Brunkhorst. Development of Equipment to Separate Nonthermal and Thermal Effects of Radio Frequency Energy on Microorganisms. Office of Scientific and Technical Information (OSTI), noviembre de 1999. http://dx.doi.org/10.2172/14581.

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Remley, Kate A., William F. Young y Jacob Healy. Analysis of radio-propagation environments to support standards development for RF-based electronic safety equipment. Gaithersburg, MD: National Institute of Standards and Technology, 2012. http://dx.doi.org/10.6028/nist.tn.1559.

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Fthenakis, V. Hazards from radio-frequency and laser equipment in the manufacture of. cap alpha. -Si photovoltaic cells. Office of Scientific and Technical Information (OSTI), abril de 1985. http://dx.doi.org/10.2172/6500070.

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Oh, Ju Hyun, Aimee Martinez, Huaixuan Cao, Garrett George, Jared Cobb, Poonam Sharma, Lauren Fassero et al. Radio frequency heating of washable conductive textiles for bacteria and virus inactivation. Engineer Research and Development Center (U.S.), enero de 2024. http://dx.doi.org/10.21079/11681/48060.

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The ongoing COVID-19 pandemic has increased the use of single-use medical fabrics such as surgical masks, respirators, and other personal protective equipment (PPE), which have faced worldwide supply chain shortages. Reusable PPE is desirable in light of such shortages; however, the use of reusable PPE is largely restricted by the difficulty of rapid sterilization. In this work, we demonstrate successful bacterial and viral inactivation through remote and rapid radio frequency (RF) heating of conductive textiles. The RF heating behavior of conductive polymer-coated fabrics was measured for several different fabrics and coating compositions. Next, to determine the robustness and repeatability of this heating response, we investigated the textile’s RF heating response after multiple detergent washes. Finally, we show a rapid reduction of bacteria and virus by RF heating our conductive fabric. 99.9% of methicillin-resistant Staphylococcus aureus (MRSA) was removed from our conductive fabrics after only 10 min of RF heating; human cytomegalovirus (HCMV) was completely sterilized after 5 min of RF heating. These results demonstrate that RF heating conductive polymercoated fabrics offer new opportunities for applications of conductive textiles in the medical and/or electronic fields.

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BACCELLI, François, Sébastien CANDEL, Guy PERRIN y Jean-Loup PUGET. Large Satellite Constellations: Challenges and Impact. Académie des sciences, marzo de 2024. http://dx.doi.org/10.62686/3.

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The New Space Age (NewSpace) marks the advent of a new era in the use of space, characterized by the opening of space to new players, the use of new space technologies, new functionalities for satellites in orbit, and the development of satellite constellations, mainly in the fields of communications and Earth observation. These developments are underpinned by first-rate scientific and technological advances, as well as considerable public and private investment, in particular in the USA, China and, to a lesser extent, Europe. Fleets of small low- and medium-orbit satellites are replacing or complementing the large geostationary satellites that predominated in the previous period. Whereas space used to be reserved to a small number of states and major industrial groups, one is now witnessing the emergence of new space states, new industrial groups such as SpaceX or Amazon, and many start-ups. One also observes the emergence of companies with launching and satellite manufacturing capacities, which are also taking on the role of telecommunication operators and content producers. The most visible result of the deployment of these new space networks is the ability to provide high-speed, low-latency Internet connections to any point on the globe. Combined with Earth observation capabilities, these new communications resources also enable real-time action to be taken in any region, including those with no equipment other than terminals. In addition, these space networks are remarkably resilient compared with terrestrial networks. Geostrategic and military considerations combine with rapidly evolving business models to explain the massive investments currently being made in this domain. However, the lack of international regulation in the field is leading to a race to occupy orbits and frequencies, which has already had serious consequences for a whole range of scientific activities. These constellations have a potentially negative impact on astronomy in the visible and infrared optical domains, as well as on radio astronomy. They also raise a major problem in terms of space congestion, with an increase in the amounts of satellite debris resulting from launches or collisions between satellites, and the possibility of reaching a phase of chain reaction collisions. In addition, from an environmental point of view, the consequences of the proliferation of launches and uncontrolled re-entries into the atmosphere are equally worrying. What’s more, the lack of regulation in the field also leads to a loss of sovereignty, since these new satellite communication networks do not comply with any of the rules that states impose on terrestrial communication networks operating on their territories. A sustainable, global solution must be found to these problems, before major and potentially irreversible damage is inflicted on the planet’s environment, geostrategic balances, democracy, and science. While the Acad´emie des Sciences considers that France and Europe need to step up their scientific and industrial actions in this field in order to benefit from the remarkable advances of these new networks, and ultimately leverage the benefits of a resilient and secure communications network, the Acad´emie also recommends working in parallel to strengthen regulation of the field with the aim of assuring sustainable access to orbital and frequency resources, as well as protection for negatively impacted fields, foremost among which are astronomy and the environment.

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Nafakh, Abdullah Jalal, Franklin Vargas Davila, Yunchang Zhang, Jon D. Fricker y Dulcy M. Abraham. Workzone Lighting and Glare on Nighttime Construction and Maintenance Activities. Purdue University, 2022. http://dx.doi.org/10.5703/1288284317379.

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Over the last two decades, an increasing number of highway construction and maintenance projects in the United States have been completed at night to avoid or alleviate traffic congestion delays. Working at night entails several advantages, including lower traffic volumes, less impact on local businesses, cooler temperatures for equipment and material, and fewer overall crashes. Although nighttime roadway operations may minimize traffic disruptions, there are several safety concerns about passing motorists and workers in the nighttime work zone. For instance, improper lighting arrangements or excessive lighting levels at the job site could cause harmful levels of glare for the traveling public and workers, which can lead to an increased level of hazards and crashes in the vicinity of the work zone. To address the issue of glare, the current report focuses on determining and evaluating disability glare on nighttime work zones in order to develop appropriate strategies for improving the safety of workers and motorists during nighttime highway construction and maintenance projects. Disability glare is the glare that impairs our vision of objects without necessarily causing discomfort, and it can be evaluated using the veiling luminance ratio (VL ratio). In this study, disability glare values were determined by using lighting data (vertical illuminance and pavement luminance measurements) from the testing of 49 lighting arrangements. Two LED balloon lights, a metal-halide light tower, and an LED light tower were utilized for the field lighting experiments. The glare assessment analyzed the effects of the lighting system setup’s parameters, such as the mounting height, power output, rotation angle, and aiming angle of luminaires on the veiling luminance ratio values (which is a criterion for limiting disability glare). The study revealed the following key findings: (1) an increase in mounting heights of both balloon lights and light towers resulted in lower disability glare levels; (2) compared to the "perpendicular" and "away" orientations, orienting the light towers "towards" the traffic (45 degrees) significantly increases the disability glare levels of the lighting arrangement; and (3) increasing the tilt angles of portable light tower luminaries resulted in an increase in disability glare levels.

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Tarasenko, Rostyslav O., Svitlana M. Amelina y Albert A. Azaryan. Integrated testing system of information competence components of future translators. [б. в.], julio de 2020. http://dx.doi.org/10.31812/123456789/3879.

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The article deals with the diagnosis of the formation of the information competence components of translators through testing. The use of testing to determine the level of formation of the information-thematic component of the information competence of translators is demonstrated. It has been established that one of the ways to form the information-thematic component of information competence in the aspect of studying terminology can be the use of thematic networks. The development of a thematic network is shown on the example of the thematic network “Electrical equipment”. The stages of test control, which are consistent with the logic of the organization of the educational process and the process of forming the information competence of the future translator according to the scheme of the developed thematic network, have been determined. These stages are the current, thematic, modular, final testing. The main types of test tasks are defined, the combination of which allows diagnosing the level of formation of the information-thematic component of students’ information competence. Criteria and principles for the selection of test tasks for each of the testing stages are proposed. The ratio of test tasks of different types and complexity at the determined testing stages has been developed. The results of an experimental study on the diagnosis of the formation of the information-thematic component of the information competence of future translators by applying the developed integrative testing system using the Moodle platform are presented.

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Galili, Naftali, Roger P. Rohrbach, Itzhak Shmulevich, Yoram Fuchs y Giora Zauberman. Non-Destructive Quality Sensing of High-Value Agricultural Commodities Through Response Analysis. United States Department of Agriculture, octubre de 1994. http://dx.doi.org/10.32747/1994.7570549.bard.

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The objectives of this project were to develop nondestructive methods for detection of internal properties and firmness of fruits and vegetables. One method was based on a soft piezoelectric film transducer developed in the Technion, for analysis of fruit response to low-energy excitation. The second method was a dot-matrix piezoelectric transducer of North Carolina State University, developed for contact-pressure analysis of fruit during impact. Two research teams, one in Israel and the other in North Carolina, coordinated their research effort according to the specific objectives of the project, to develop and apply the two complementary methods for quality control of agricultural commodities. In Israel: An improved firmness testing system was developed and tested with tropical fruits. The new system included an instrumented fruit-bed of three flexible piezoelectric sensors and miniature electromagnetic hammers, which served as fruit support and low-energy excitation device, respectively. Resonant frequencies were detected for determination of firmness index. Two new acoustic parameters were developed for evaluation of fruit firmness and maturity: a dumping-ratio and a centeroid of the frequency response. Experiments were performed with avocado and mango fruits. The internal damping ratio, which may indicate fruit ripeness, increased monotonically with time, while resonant frequencies and firmness indices decreased with time. Fruit samples were tested daily by destructive penetration test. A fairy high correlation was found in tropical fruits between the penetration force and the new acoustic parameters; a lower correlation was found between this parameter and the conventional firmness index. Improved table-top firmness testing units, Firmalon, with data-logging system and on-line data analysis capacity have been built. The new device was used for the full-scale experiments in the next two years, ahead of the original program and BARD timetable. Close cooperation was initiated with local industry for development of both off-line and on-line sorting and quality control of more agricultural commodities. Firmalon units were produced and operated in major packaging houses in Israel, Belgium and Washington State, on mango and avocado, apples, pears, tomatoes, melons and some other fruits, to gain field experience with the new method. The accumulated experimental data from all these activities is still analyzed, to improve firmness sorting criteria and shelf-life predicting curves for the different fruits. The test program in commercial CA storage facilities in Washington State included seven apple varieties: Fuji, Braeburn, Gala, Granny Smith, Jonagold, Red Delicious, Golden Delicious, and D'Anjou pear variety. FI master-curves could be developed for the Braeburn, Gala, Granny Smith and Jonagold apples. These fruits showed a steady ripening process during the test period. Yet, more work should be conducted to reduce scattering of the data and to determine the confidence limits of the method. Nearly constant FI in Red Delicious and the fluctuations of FI in the Fuji apples should be re-examined. Three sets of experiment were performed with Flandria tomatoes. Despite the complex structure of the tomatoes, the acoustic method could be used for firmness evaluation and to follow the ripening evolution with time. Close agreement was achieved between the auction expert evaluation and that of the nondestructive acoustic test, where firmness index of 4.0 and more indicated grade-A tomatoes. More work is performed to refine the sorting algorithm and to develop a general ripening scale for automatic grading of tomatoes for the fresh fruit market. Galia melons were tested in Israel, in simulated export conditions. It was concluded that the Firmalon is capable of detecting the ripening of melons nondestructively, and sorted out the defective fruits from the export shipment. The cooperation with local industry resulted in development of automatic on-line prototype of the acoustic sensor, that may be incorporated with the export quality control system for melons. More interesting is the development of the remote firmness sensing method for sealed CA cool-rooms, where most of the full-year fruit yield in stored for off-season consumption. Hundreds of ripening monitor systems have been installed in major fruit storage facilities, and being evaluated now by the consumers. If successful, the new method may cause a major change in long-term fruit storage technology. More uses of the acoustic test method have been considered, for monitoring fruit maturity and harvest time, testing fruit samples or each individual fruit when entering the storage facilities, packaging house and auction, and in the supermarket. This approach may result in a full line of equipment for nondestructive quality control of fruits and vegetables, from the orchard or the greenhouse, through the entire sorting, grading and storage process, up to the consumer table. The developed technology offers a tool to determine the maturity of the fruits nondestructively by monitoring their acoustic response to mechanical impulse on the tree. A special device was built and preliminary tested in mango fruit. More development is needed to develop a portable, hand operated sensing method for this purpose. In North Carolina: Analysis method based on an Auto-Regressive (AR) model was developed for detecting the first resonance of fruit from their response to mechanical impulse. The algorithm included a routine that detects the first resonant frequency from as many sensors as possible. Experiments on Red Delicious apples were performed and their firmness was determined. The AR method allowed the detection of the first resonance. The method could be fast enough to be utilized in a real time sorting machine. Yet, further study is needed to look for improvement of the search algorithm of the methods. An impact contact-pressure measurement system and Neural Network (NN) identification method were developed to investigate the relationships between surface pressure distributions on selected fruits and their respective internal textural qualities. A piezoelectric dot-matrix pressure transducer was developed for the purpose of acquiring time-sampled pressure profiles during impact. The acquired data was transferred into a personal computer and accurate visualization of animated data were presented. Preliminary test with 10 apples has been performed. Measurement were made by the contact-pressure transducer in two different positions. Complementary measurements were made on the same apples by using the Firmalon and Magness Taylor (MT) testers. Three-layer neural network was designed. 2/3 of the contact-pressure data were used as training input data and corresponding MT data as training target data. The remaining data were used as NN checking data. Six samples randomly chosen from the ten measured samples and their corresponding Firmalon values were used as the NN training and target data, respectively. The remaining four samples' data were input to the NN. The NN results consistent with the Firmness Tester values. So, if more training data would be obtained, the output should be more accurate. In addition, the Firmness Tester values do not consistent with MT firmness tester values. The NN method developed in this study appears to be a useful tool to emulate the MT Firmness test results without destroying the apple samples. To get more accurate estimation of MT firmness a much larger training data set is required. When the larger sensitive area of the pressure sensor being developed in this project becomes available, the entire contact 'shape' will provide additional information and the neural network results would be more accurate. It has been shown that the impact information can be utilized in the determination of internal quality factors of fruit. Until now,

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