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.
Results
Showing 1 to 20 of 24 for “"Satellite Network"”.
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Optimal Allocation of Satellite Network Resources
… a straightforward solution to a problem of satellite network resource allocation by exploring the application of an optimal algorithm to a subset of the general scheduling problem. Making some basic simplifications, such as the limitation of the mission scenarios to Low Earth Orbiting …
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Cost optimization and routing for satellite network constellations
Low-earth orbit (LEO) satellite communications systems have been under rapid development in the past few years as it is predicted that they will become part of the Next Generation Internet (NGI), a global heterogeneous network that provides ubiquitous access to every part of the world. …
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Performance characteristics of a multiple use Ku-band satellite network
… for the terminal were being determined. Several satellite networks which can use the Ku-band earth station are explored in this thesis. System level designs are presented for each network. The anticipated performance of the network during clear sky conditions and during periods of rain fade …
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Radio Resource Management for Satellite UMTS. Dynamic scheduling algorithm for a UMTS-compatible satellite network.
… systems. The implementation of these services on satellite systems, particularly for broadcast and multicast applications to complement terrestrial services is ideal since satellite systems are capable of providing global coverage in areas not served by terrestrial telecommunication services. …
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A Model for Development of a Telecommunications Satellite Network for Administrative, Educational and Other Purposes in a Private Organization
… resources to take advantage of communication satellites, private organizations with more modest means have not been provided with a plan for utilization of this new technology. The purpose of this study was to design a model for development of a telecommunications network which private …
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IP Mobile Multicast over Next Generation Satellite Networks. Design and Evaluation of a Seamless Mobility Framework for IP Multicast Communications over a Multi-beam Geostationary Satellite Network
The inherent broadcast nature of satellites, their global coverage and direct access to a large number of subscribers give satellites unrivalled advantages in supporting IP multicast applications. A new generation of satellite systems that support regenerative on-board processors and multiple spot …
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A Study into the Tradeoffs Between TDM / MF-SCPC and TDM / MF-TDMA Transport Options to Support IP-Based Multimedia Applications Under Different Load Conditions Within a Point-to-Multipoint Satellite Network
… elements that are involved in geosynchronous satellite point-to-multipoint Internet Protocol (IP)-based multimedia communications design and also takes a deep dive into the analysis of a real-life scenario, using the TDM / MF-SCPC and TDM / MF-TDMA media access techniques. This thesis starts …
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Use of isoperformance, constraint programming, and mixed integer linear programing for architecture tradespace exploration of passive Optical Earth Observation Systems
… uses simple algorithms to identify potential satellite bus options for hosting each sensor architecture in orbit. The total cost of populating an entire constellation based on the sensor architecture is finally estimated using cost estimates for the sensor, satellite bus, and the best launch …
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System Design of an Integrated Terrestrial-Satellite Communications Network for Disaster Recovery
… describes a possible integrated terrestrial-satellite network system for disaster recovery and response. The motivation of this thesis was based on the adjacent spectrum allocations between the Virginia Tech terrestrial Local Multiple Distribution Service (LMDS) system and a Ka-band satellite …
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Proliferated Low Earth Orbit (pLEO) Satellite Constellation Handover Cost Analysis
In any mobile network, handovers between routing nodes generally cause a reduction in available resources for users. This is very true of proliferated Low Earth orbit (pLEO) satellite constellation networks in which both the satellite and the user are mobile with respect to each other. As …
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Capacity provisioning, failure recovery and throughput analysis for low earth orbit satellite constellations
… the capacity needed to build a restorable satellite network and design routing schemes to achieve high throughput. Specifically, the first part of this thesis considers the link capacity requirement for a LEO satellite constellation. We model the constellation as an N x N mesh-torus …
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A multiobjective, multidisciplinary design optimization methodology for the conceptual design of distributed satellite systems
… for mathematically modeling the distributed satellite system (DSS) conceptual design problem as an optimization problem has been developed to advance the state-of-the-art in complex distributed satellite network design. An increasing number of space missions are utilizing DSS architectures in …
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Performance in Multipath & High-Mobility Leveraging Terrestrial and Satellite Networks
… in transit, demand reliable and high-performance network communication. This thesis presents a comprehensive measurement study comparing the performance of terrestrial 5G networks (ATT, Verizon, T-Mobile) and the Starlink satellite network in high-mobility scenarios. The study evaluates key …
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Evaluation of Probabilistic Methodology for Predicting Satellite Tracking Resources
… methodology for estimating the ability of satellite tracking networks to provide tracking and data acquisition services to large constellations of satellites. This approach, developed by Hagar is evaluated using Monte Carlo simulations of optimal satellite contact scheduling on a tracking …
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Development and application of an analysis methodology for satellite broadband network architectures
… the technical and economic performance of a satellite network system has been developed and implemented. It was applied to a set of satellite broadband network system designs based on the five systems in Ku-band recently proposed to the Federal Communications Commission. The considered …
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An Approach to Optimising the Design of a Repeaterless Global Quantum Network
A global quantum network will soon be possible, however investigations on its design are limited. Fibre-based optimisations focus on device placement. Cost analysis including nodes, fibres and usage of optical switching has been insufficiently explored. Satellite quantum key distribution is …
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Could global warming affect space weather? : case studies of intense ionospheric plasma turbulence associated with natural heat sources
… (ASIS), together with TEC measurements from GPS satellite network provide well-integrated diagnostics of turbulent plasma conditions. Two kinds of turbulent structures were seen as slanted stripes and filaments/quasi-periodic echoes on the range-time-intensity (RTI) plots of radar measurements. …
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Measuring Compliance to the International Telecommunication Union’s Geosynchronous Orbital Assignments
Satellites in orbit around the Earth obey more than just the laws of physics; a network of rules, regulations, and guidelines govern their activities, too. In geosynchronous orbit (GEO), countries coordinate their satellite missions to prevent harmful interference in the radio-frequency spectrum …
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SHARC Buoy: Robust firmware design for a novel, low-cost autonomous platform for the Antarctic Marginal Ice Zone in the Southern Ocean
… and a power sensor to monitor the module. A satellite modem transmitted data through the Iridium satellite network. Finally, Flash chips provided permanent data storage. Firmware and peripheral driver files were written in C for an STMicroelectronics STM32L4 Arm-based microcontroller. To …
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