Satellite communications
Printed antenna for satellite communications
... Abstract— An antenna which has been conceived as a portable system for satellite communications based on the recommendations ITU-R S.580-6 [1] and ITU-R S.465-5 [2] for small antennas, i.e., with a diameter ...
5
Dual circular polarized steering antenna for satellite communications in X band
... “Satellite communications,” New Antenna Array Architectures for Satellite Communications, Chapter 7, 167–194, InTech Open Access Publisher, ...
16
Design and simulation of a coherent transmitter based on a photonic integrated circuit for inter and intra satellite communications
... tical fibers can be divided according to their refractive indexes, polarization, dispersion, number of modes, etc. This last category is split into single-mode fibers and multi-mode fibers. In single-mode fibers the core ...
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Low-Profile Dual Circularly Polarized Antenna Array for Satellite Communications in the X Band
... Abstract—A planar antenna is introduced that works as a portable system for X-band satellite communications. This antenna is low-profile and modular with dimensions of cm. It is composed of a square array ...
9
Desarrollo de un sistema de sincronización espacial para comunicaciones ópticas satelitalesDevelopment of a spatial synchronization system for optical satellite communications
... optical communications which include the bidirectional transmission between an earth station and airplanes or balloons, aircraft to satellites in low-earth orbit (LEO), from earth to satellites in different orbits ...
114
Statistical techniques and algorithms applied in satellite communications antenna arrays for direction of arrival estimation and calibration
... However, Conical Scan on the one hand takes some time to converge, around 1 minute typically, and thus may be unsuitable in critical scenarios, where signal losses must be kept to a minimum. On the other hand, while XAA ...
295
Descargar Aquí
... in satellite communications are two- dimensional horn arrays, the principle is most easily explained with reference to an in-line array of dipoles ...
586
High Performance Signal Processing-Based Collision Resolution for Random Access Schemes
... of satellite microwave (GHz) technologies, such as contoured multi-beam antennae with higher gain and high power transmission amplifiers (200-300W), enabled the use of smaller earth stations affordable to the end ...
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Connexin43 hemichannels in satellite glial cells, can they influence sensory neuron activity?
... calcium coupling between those two cell types (Ennes et al., 1999). Those results suggest that at least in tissue culture, connexin-based channels allow sensory neurons to couple metabolically with smooth muscle cells. ...
9
Nuevas arquitecturas de transpondedores de microondas = New transponder architectures at microwave frequencies = Nouvelles architectures des transpondeurs d’hyperfréquences
... Observation satellite described in the section ...the satellite is an X-band Synthetic Aperture Radar instrument that integrates 384 TRMs located in 12 antenna panels ...
194
Efectos de velocidad y de gravitación en GPS satelitales: un esquema para la predicción y detección temprana de fuertes terremotos
... the Einstein gravitational blue shift effect of the satellite clock frequency (equivalence principle of general relativity). Both of these effects can be treated at a basic level, making for an appealing ...
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TítuloCompiler Assisted Checkpointing of Parallel Codes: The Cetus and LLVM Experience
... When checkpointing message-passing applications, the dependencies created by interprocess communications have to be preserved during recovery. If a checkpoint is placed in the code between two matching ...
25
Energy Efficient wireless communications
... range communications the power consumed by electronic components dominates over the irradiated power, and hence also does so over the energy consumption of the power ...
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A Catalog of Cool Dwarf Targets for the Transiting Exoplanet Survey Satellite
... upcoming Transiting Exoplanet Survey Satellite ( TESS ) , for the purpose of determining which cool dwarfs should be observed using two minute observations. TESS has the opportunity to search tens of thousands of ...
14
Quantum communications in optical networks
... conventional communications: share the resources as much as ...other communications, most research focuses on multiplexing it with conventional communi- ...
135
Journal of Integrated Marketing Communications
... viable communications channels and should be considered in the mix of tactics that communicators ...in communications technol- ogy that may someday take up residence in e-mails, intranets, Internets, and ...
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Communications Systems Based on Chaos
... This last condition stems from the fact that, as this kind of chaos-based modulation is in fact a coded modulation, we will study in the following chapters the possibil- ity of exploiting successfully the serial and ...
173
Array database Model (SciDB) for Standardized Storing of Hyperspectral Satellite Images
... Hyperspectral images are like spectral images; they represent information of different bands of the electromagnetic spectrum. But unlike spectral images, they convey a wide range of fine wavelengths leading to obtaining ...
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Analysis of M2M Capabilities in 4G
... M2M communications, called MTC (Machine Type Communications) in their standards as "a form of data communication involving one or more entities that do not necessarily require human interaction" ...
5
TítuloTestbed design for wireless communications systems assessment
... Technology, Austria. We make use of the Vienna MIMO Testbed to carry out measurements in downtown Vienna, constituting a very realistic, urban, outdoor environment. More specifically, we investigate the influence of ...
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