Thesis (M.S. in Astronautical Engineering)--Naval Postgraduate School, June 1990. / Thesis Advisor(s): Agrawal, Brij N. Second Reader: Biblarz, Oscar. "June 2009." Description based on title screen as viewed on 19 October 2009. DTIC Identifier(s): Ion propulsion, synchronous satellites, NSSK (North South Station Keeping). Author(s) subject terms: Ion propulsion, geosynchronous satellite, North-South Station Keeping. Includes bibliographical references (p. 153-156). Also available in print.

Report (M.S.)--Virginia Polytechnic Institute and State University. M.S. 1993. / Abstract. Includes bibliographical references (leaves 80-81). Also available via the Internet.

M.Ing. / The increase of multimedia and broadband communications in recent years has brought about the creation and implementation of synchronousdigital hierarchy (SDH) in the terrestrial network. The implementation of SDH in the satellite sector is a natural extension to improve the current available networks. It will drastically increase the flexibility and usability of the current under-utilized satellite sector. Unfortunately, SDH has still not been implemented in the satellite sector due to certain inherent synchronization problems of SDH and satellites. This thesis investigates some of these synchronization problems. A simulation tool was created that makes an accurate assessment of SDH synchronization in the satellite sector. The tool was used to study SDH links over goestationary (GEO), medium earth orbiting (MEO) and low earth orbiting (LEO) satellites. Various changeable SDH parameters were investigated to determine their influences. Parameters like the bit rate and elastic store length or hysteresis lengths were considered.

Thesis (MScIng)--University of Stellenbosch, 2006. / Bibliography. Also available via the Internet.

Thesis (Ph. D.)--University of Texas at Austin, 1998. / Vita. Includes bibliographical references (leaves 226-231). Available also in a digital version from Dissertation Abstracts.

No description available.

Tsz-Shing Tam. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1999. / Includes bibliographical references (leaves 84-87). / Abstracts in English and Chinese. / Abstract --- p.i / Acknowledgments --- p.ii / Chapter 1 --- Introduction --- p.1 / Chapter 2 --- Literature Review --- p.6 / Chapter 3 --- System Model --- p.12 / Chapter 3.1 --- Static Architecture --- p.12 / Chapter 3.2 --- Dynamics --- p.15 / Chapter 3.3 --- Communication Paradigm --- p.16 / Chapter 3.4 --- Metric --- p.17 / Chapter 4 --- Routing Algorithms --- p.19 / Chapter 4.1 --- Minimum Hops Algorithm (MHA) --- p.20 / Chapter 4.2 --- Minimum Cost Algorithm (MCA) --- p.21 / Chapter 4.3 --- Mesh Algorithm (MA) --- p.24 / Chapter 4.3.1 --- Construction of the Set of Min-hop Paths --- p.24 / Chapter 4.3.2 --- Choosing a Path in S0 --- p.29 / Chapter 4.4 --- k-mesh Algorithm (KMA) --- p.29 / Chapter 4.4.1 --- Finding Sk --- p.30 / Chapter 4.4.2 --- Choosing a path in Sk --- p.34 / Chapter 4.5 --- Revised Mesh Algorithm (RMA) --- p.34 / Chapter 5 --- Reservation Strategies --- p.36 / Chapter 5.1 --- Introduction --- p.36 / Chapter 5.2 --- Notations --- p.38 / Chapter 5.3 --- Basic Reservation Strategy (BRS) --- p.39 / Chapter 5.4 --- Enhanced Reservation Strategy (ERS) --- p.41 / Chapter 5.5 --- Successor Reservation Strategy (SRS) --- p.43 / Chapter 6 --- Experiment --- p.45 / Chapter 6.1 --- Comparison on Routing Algorithms --- p.47 / Chapter 6.2 --- Comparison on Reservation Strategies --- p.64 / Chapter 7 --- Conclusion --- p.72 / Chapter A --- Existence of paths in Sk --- p.75 / Chapter B --- Estimation of basic reservation strategy guaranteed time --- p.79 / Chapter B.1 --- Basic reservation strategy --- p.79 / Chapter B.2 --- Estimation on Guaranteed Duration --- p.80 / Bibliography --- p.83

The study of outer radiation belt dynamics has been ongoing for over 5 decades. Outer radiation belt dropouts involve the rapid lost of electron fluxes at the main phase of a storm and subsequent recovery. The characteristics of the dropouts are many and varied. This study examines the Geosynchronous Earth Orbit (GEO) and the ionospheric responses during Stream Interface (SI) andMagnetic Cloud (MC) events, using a combination of ground based and satellite instruments. SI- and MC-driven dropout events were inspected from summary plots of the Synchronous Orbit Particle Analyser (SOPA) instruments from the year 1996 to 2007. Comprehensive studies were done on six selected events. Analysis of the data from the instruments indicate that SIs and MCs are important lost drivers with significant differences in GEO and ionospheric environment. To validate the data and test for consistent response of the events, the Superposed Epoch Analysis (SEA) technique was used. The ground based measurements also revealed how the absorption peaks in the ionosphere correlated with dropouts and geophysical activity. Ionospheric absorption during SI associated dropouts was enhanced for 5 < L < 6, while significant peaks in ionospheric absorption extended to lower L during MC driven dropouts. Wave-particle interactions and southward Interplanetary Magnetic Field (IMF-Bz) are apparent causes for the precipitation. This analysis showed that, within the confines of the selected events, SI driven dropouts were more dominant at the declining phase of the solar cycle while the MC driven dropouts were more dominant during solar maximum. / Thesis (M.Sc.)-University of KwaZulu-Natal, Westville, 2011.

[pt] O objetivo deste trabalho é estender a aplicação do Método Analítico de avaliação de interferências envolvendo redes de satélites não geoestacionários a situações onde as parcelas de interferência dos diversos satélites de uma dada constelação são modeladas como variáveis aleatórias estatisticamente independentes. A análise deste tipo de situação requer o cálculo de um número muito grande de convoluções. Depois de mostrar que o cálculo direto da convolução é computacionalmente viável e que o uso de simulação de Monte Carlo requer um tempo de computação proibitivo para garantir a precisão necessária, o estudo identifica duas alternativas: utilização indireta do teorema do limite central, e integração numérica utilizando a Regra de Quadratura de Gauss. Por último, o presente trabalho apresenta dois exemplos numéricos de aplicação do Método Analítico, onde é possível observar melhorias na precisão dos resultados obtidos, em relação aos obtidos com outros métodos. / [en] The objective of this work is to extend the use of the Analytical Method for assessing the interference involving non-geostationary satellite networks to situations where the interference entries from the various satellites in a given Constellations are modeled as statistically independent random variables. The analysis of this type of situation requires a large number of convolution computations. After showing that the direct approach to numerically compute convolutions is not feasible and that the use of Monte Carlo simulation techniques require a prohibitive computer time to guarantee the necessary accuracy, the study identifies two alternatives: the indirect use of the Central Limit theorem, and numerical integration using Gauss Quadrature Rules. Finally, the present work presents two numerical example applications of the Analytical Method. The obtained results show an accuracy improvement when compared to those obtained using other methods.

Thesis (M.S.)--Worcester Polytechnic Institute. / Keywords: TCP; RED; satellite; PEP; STP; performance enhancing proxy; segment caching; IP-ABR; Internet; bandwidth reservation; IP-VBR; congestion avoidance; bandwidth sharing. Includes bibliographical references (p. 98-99).