Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"FSO"”.
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Securing Military SATCOM and FSO Networks in FCAS: A Cyber and Electronic Warfare Perspective for Next-Gen Aerospace Defense
… και οπτικές επικοινωνίες ελεύθερου χώρου (FSO), με σκοπό τη διασφάλιση ανθεκτικής συνδεσιμότητας υψηλής χωρητικότητας για το FCAS. Πραγματοποιείται μια ολοκληρωμένη ανασκόπηση των θεμελιωδών αρχών των SATCOM και FSO – συμπεριλαμβανομένων των τροχιακών καθεστώτων (LEO/MEO/GEO), των …
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Free space optic communication for Navy surface ship platforms
Free Space Optics (FSO) technology is an alternative broadband technology, which provides fast, secure and reliable data transmission. The FSO systems are being used for commercial systems between fixed sites and are being considered for military systems because of their inherent benefits, which …
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Modeling and performance evaluation of free space optical link for ground-to-train communications
… on-board fast-moving trains. Free Space Optical (FSO) Communications technology promises a bright future for various applications, due to its cost-effectiveness, ease of deployment, and huge unregulated bandwidth, which gives it an edge over contemporary technologies. However, there is a lack of …
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Outage prediction modelling of terrestrial free space optics for tropical region
In modern times, Free Space Optical (FSO) communication technology has become an alternative way to radio links and optical cables. FSO links provide gigabit per second data rates and unlimited bandwidth, however its availability can easily be affected by fading due to different meteorological …
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Multi-Transceiver Free-Space-Optical Structures for Mobile Ad-Hoc Networks
… is tessellated with multiple free-space-optical (FSO) transmitter and receiver (transceiver) pairs that exploit spatial reuse of the shared medium and are capable of handling extremely high data rates using optical modulation techniques. However, because of the highly directional nature of FSO …
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Laser beacon tracking for free-space optical communication on small-satellite platforms in low-earth orbit
Free-space optical (FSO) communication, or laser communication, is capable of providing high-rate communication links, meeting the growing downlink demand of space missions, including those on small-satellite platforms. FSO communication takes advantage of the high-gain nature of narrow laser beams …
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Bidirectional adaptive optics architectures for optical communication through atmospheric turbulence
Free-space optical (FSO) classical communication links can provide high data rates vital for successfully serving the world's exponentially growing demand for bandwidth, while FSO quantum key distribution (QKD) links allow information-theoretic rather than computational secure communication between …
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Free-space optical networks : fade and interference mitigation and network congestion control
… channel is commonly known as free-space optical (FSO) communication. When communicating through a clear FSO channel, not only is there atmospheric turbulence which results in fading of the received signal, but there may also be interference that scatters into the receiver and deteriorates …
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Invisible sexual predators & their silent crimes: exploring media constructions of female teacher sex offenders
The invisibility of female sex offenders (FSOs), and the trend of denialism surrounding the phenomenon, is the social issue that foregrounds this research. Sex offending continues to be regarded as male dominated and, as a result, research has focused almost exclusively on male sex offenders …
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Optomechanical and wavelength alignments of CubeSat laser communication Systems
… communication system is the free space optical (FSO) communication system. With higher power efficiency, FSO communication, or lasercom, can potentially provide higher data rates using less power and also avoid the RF spectrum regulatory process. MIT's Nanosatellite Optical Downlink Experiment …
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Nonlinear optics for frequency-doubling in nanosatellite laser communication
… frequency-doubling to enable free space optical (FSO) communication links to take advantage of the ability to switch between two wavelengths using one transmit module. Our analysis shows that incorporating frequency-doubling with nonlinear optics into existing communication system designs can …
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Optomechanical design, analysis, and testing of the nanosatellite optical downlink experiment
… the amount of data desired. Free Space Optical (FSO) communication systems offer an alternative to traditional RF systems that can offer data rates more than an order of magnitude faster than RF communication while using less power and mass. This thesis describes the optomechanical design, …
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Wireless personal area networks and free-space optical links
… data association (IrDA) and free space optics (FSO). A model for the IrDA (indoor infrared) link layer is developed by considering the presence of bit errors. Based on this model, the effect of propagation delay on the link through put is investigated. An optimization study is also carried out …
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Modular Laser Combat System for Remotely Operated Vehicles: Bridging the Gap Between Computer Simulation and Live Fire
… of a simulated weapon using Free Space Optical (FSO) infrared communication. It is developed in such a way to ensure compatibility with a variety of platforms including ground and aerial vehicles, so that identical but configurable modules can be used on any vehicle that is to take place in a …
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Focus Sensitive Coordination
… the role of the Focus Sensitive Operators (FSOs) even and also when found inside of a coordination. Coordinations of this form are called Focus Sensitive Coordinations (FSC) and include or even, and even, and also, not only...but also, let alone, and as well as. I argue that let alone and as …
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Psychological biases affect hedonic ratings
… minimize positional and First Serving Order (FSO) biases in consumer tests by extracting more explained variances, resulting in decreased Type-II error in the model. Logistic regression analysis was proven to be an alternative methodology to quantify sensory contrast effects. For sensory …
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High Capacity VCSEL Array Based Optical Wireless Links
… scheme. A VCSEL-array-based free space optical (FSO) fronthaul link with easy alignment for next-generation radio access network is demonstrated for the first time. Together these demonstrate the attractiveness of VCSEL array-based transmitters for use in optical wireless communication systems.
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Profound childhood deafness in South Africa : a clinical and molecular genetic approach
… (AD CMD), familial streptomycin ototoxicity (FSO) and a private syndrome comprising deafness, microtia and facial palsy (DMF). Sclerosteosis is an autosomal recessive disorder of bone overgrowth with a high gene frequency among the Afrikaner population of South Africa. Gene mapping of this …
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Fundamentals of Quantum Communication Networks: Scalability, Efficiency, and Distributed Quantum Machine Learning
… the scalability challenge of free-space optical (FSO) quantum channels in the presence of blockages and environmental effects. Particularly, the utilization of a reconfigurable intelligent surface (RIS) in QCNs is proposed to maintain a line-of-sight (LoS) connection between quantum nodes …
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Wideband Terrestrial Path Loss Measurement Results For Characterization of Pico-cell Radio Links at 38 GHz and 60 GHz Bands of Frequencies
The advent of Internet based digital services, and bandwidth-intensive business and personal applications has necessitated deployment of broadband network access technologies. Research analysts project that the U.S. market for broadband wireless networking will grow to nearly $2 billion by 2004 and …