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Relevant bibliographies by topics / Satellite GEO / Dissertations / Theses

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Dissertations / Theses on the topic 'Satellite GEO'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Kalama, M. "Dynamic radio resource management in GEO satellite systems." Thesis, University of Surrey, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.521717.

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The purpose of this research study was to investigate solutions to degradations in QoS (Quality of Service) for Broadband Internet provision via Geostationary Satellite Systems. Analysis as well as trials using commercial equipment have shown that these can result from certain Radio Resource Management (RRM) schemes, the limited capacity per user as well as atmospheric channel impairments. The latter is being effectively addressed by Fade Mitigation Techniques, leading however in a reduction and variation of the useful capacity. In addition, internet applications and protocols have been develo

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2

Paek, Sung Wook. "Reconfigurable satellite constellations for geo-spatially adaptive Earth observation missions." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/76106.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 145-151).<br>Continuously increasing demand for Earth observation in atmospheric research, disaster monitoring, and intelligence, surveillance and reconnaissance (ISR) has been met by responsive architectures such as unmanned aerial systems (UAS) or artificial satellites. Space-based architectures can provide non-dominated design solutions on the utility-cost curve compared to alternate architectures through the u

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Ichikawa, Naoki, Masaaki Katayama, Hiraku Okada, Takaya Yamazato, and Akira Ogawa. "Comparison of CDMA and FDMA/TDMA in non-GEO Satellite Systems." IEEE, 2001. http://hdl.handle.net/2237/7750.

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4

Liang, Lei. "Peformance evaluations of IP multiparty multimedia communications over GEO satellite networks." Thesis, University of Surrey, 2005. http://epubs.surrey.ac.uk/844577/.

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With the rapid development of the Internet, new theories and technologies are blooming and boosting the associated applications. One group of important applications is the multiparty multimedia communications. Satellites, which have played an important role in telephony communication and TV broadcasting services, could also play an important role to provide multiparty multimedia communications with their global coverage and on-board processing ability over IP networks. IP multiparty multimedia conferencing is one of these communication applications. With the support of satellites, one can prov

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5

Sooriyabandara, Mahesh. "Long-term transport support mechanisms for next generation geo satellite access networks." Thesis, University of Aberdeen, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.401173.

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Support for IP-based services, efficient resource management and broadband connectivity distinguish next generation of satellite systems from their narrowband predecessors. Two types of satellite access systems are studied: Hybrid and Bandwidth-on-Demand (BoD). The capacity asymmetry in these types of networks interacts with TCP resulting in reduction of forward path performance due to the characteristics of die return path. This thesis presents an ACK Modification scheme combining ACK Filtering with uplink Fair Queuing to improve the fair sharing and forward diroughput in the presence of b

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Kaye, Lewis Carleton University Dissertation Journalism and Communication. ""Leo, Meo, or Geo?": a political economic analysis of global mobile satellite services." Ottawa, 1996.

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7

Gazzino, Clément. "Stratégies de maintien à poste pour un satellite géostationnaire à propulsion tout électrique." Thesis, Toulouse 3, 2018. http://www.theses.fr/2018TOU30001/document.

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Pour mener à bien leur mission, les satellites de télécommunications doivent rester à la verticale d'un même point de la Terre, sur une orbite dite géostationnaire, pour laquelle la période de révolution des satellites sur leur orbite est identique à la période de rotation de la Terre sur elle-même. Cependant, à cause des perturbations orbitales, les satellites tendent à s'en éloigner, et il est alors nécessaire de concevoir des stratégies de commande pour les maintenir dans un voisinage de cette position de référence. Du fait de leur grande valeur de poussée, les systèmes à propulsion chimiqu

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8

Su, Hua. "Precise orbit determination of global navigation satellite system of second generation (GNSS-2) orbit determination of IGSO, GEO and MEO satellites /." [S.l.] : [s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=962099635.

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9

Beyene, Dereje, and Befkadu Degefa. "Adaptive Antenna Arrays for Satellite Mobile Communication Systems." Thesis, Linnaeus University, School of Computer Science, Physics and Mathematics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-191.

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<p>Adaptive antenna arrays have a great importance in reduction of the effect of interference and increase the capacity for the mobile satellite communication. Interference and multipath fading remain a main problem for reception of signals. These two problems obviously affect the overall capacity. Adaptive antenna arrays in the handheld mobile apparatus will be the solution for the above two problems.</p><p> </p><p>Satellite mobile communication is one of the growing fields in the communication area where terrestrial infrastructures are unable or ineffective to supply. Maritime, aeronautical

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10

Rinaldi, Eleonora <1981&gt. "Satellite and in situ data integrated analysis to study the upper ocean an coastal environment of the Italian seas." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amsdottorato.unibo.it/4647/.

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The thesis objectives are to develop new methodologies for study of the space and time variability of Italian upper ocean ecosystem through the combined use of multi-sensors satellite data and in situ observations and to identify the capability and limits of remote sensing observations to monitor the marine state at short and long time scales. Three oceanographic basins have been selected and subjected to different types of analyses. The first region is the Tyrrhenian Sea where a comparative analysis of altimetry and lagrangian measurements was carried out to study the surface circulation. T

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11

Di, Paola Francesco <1973&gt. "Aumento della risoluzione spaziale per il sondaggio di temperatura e umidità da satellite geostazionario mediante radiometria ad onde millimetriche e submillimetriche." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/862/.

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The purpose of this study is to develop and evaluate techniques that improve the spatial resolution of the channels already selected in the preliminary studies for Geostationary Observatory for Microwave Atmospheric Soundings (GOMAS). Reference high resolution multifrequency brightness temperatures scenarios have been derived by applying radiative transfer calculation to the spatially and microphysically detailed output of meteorological events simulated by the University of Wisconsin - Non-hydrostatic Model System (UW-NMS). Three approaches, Wiener filter, Super-Resolution and Image Fu

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Pisano, Andrea <1977&gt. "Development of oil spill detection techniques for satellite optical sensors and their application to monitor oil spill discharge in Mediterranean sea." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amsdottorato.unibo.it/3520/.

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Satellite remote sensing has proved to be an effective support in timely detection and monitoring of marine oil pollution, mainly due to illegal ship discharges. In this context, we have developed a new methodology and technique for optical oil spill detection, which make use of MODIS L2 and MERIS L1B satellite top of atmosphere (TOA) reflectance imagery, for the first time in a highly automated way. The main idea was combining wide swaths and short revisit times of optical sensors with SAR observations, generally used in oil spill monitoring. This arises from the necessity to overcome the SAR

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13

Wiedemeier, Paul Douglas. "Transport, network, and data link layer protocol designs to improve geo-stationary Earth orbit satellite data set transmission performance." Diss., Columbia, Mo. : University of Missouri-Columbia, 2005. http://hdl.handle.net/10355/4190.

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Thesis (Ph. D.)--University of Missouri-Columbia, 2005.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (May 25, 2006) Vita. Includes bibliographical references.

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14

Zaunick, Edgar [Verfasser]. "Zustandsschätzung geostationärer Beobachtungssatelliten auf der Basis multispektraler Bildinformationen : GEO Satellite State Estimation with Multispectral Image Information / Edgar Zaunick." Aachen : Shaker, 2010. http://d-nb.info/1084536226/34.

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15

Willis, James. "SATELLITE PAYLOAD CONTROL AND MONITORING USING PERSONAL COMPUTERS." International Foundation for Telemetering, 1998. http://hdl.handle.net/10150/609219.

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International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, California<br>Universal acceptance of the Windows NT operating system has made utilization of the personal computer (PC) platform for critical space operations a reality. The software attributes of the operating system allow PC products to attain the reliability necessary for secure control of on-orbit assets. Not only is the software more reliable, it supports better networking interfaces at higher speeds. The software upgrades that the Microsoft Corporation

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16

Dakkak, M. Rabih. "Random access procedure in Non-Terrestrial 5G Networks." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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The goal of non-terrestrial networks (NTN) is to complement terrestrial 5G networks by providing enhanced coverage and service continuity for unserved areas of 5G terrestrial networks. One of the pivotal factors in the effective deployment of mobile satellite systems in the 5G network is to maximize the utilization of the current technology in terrestrial systems, to lower the implementation costs. The efficient design and integration of NTN to 5G systems depend on the consideration of some unique features of satellite communication systems, such as large propagation delays and large Doppler

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17

Van, den Dool Riaan. "Onboard image geo-referencing for LEO satellites." Thesis, Link to the online version, 2005. http://hdl.handle.net/10019/1252.

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18

Carter, Phillip. "Handover in non-GEO constellations of satellites for personal communications systems." Thesis, University of Bristol, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283605.

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19

Ceniceros, Angelica, and Angelica Ceniceros. "Comparison of Model Predicted and Observed Light Curves of GEO Satellites." Thesis, The University of Arizona, 2017. http://hdl.handle.net/10150/625339.

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Although the amount of light received by sensors on the ground from Resident Space Objects (RSOs) in geostationary orbit (GEO) is small, information can still be extracted in the form of light curves (temporal brightness or apparent magnitude). Previous research has shown promising results in determining RSO characteristics such as shape, size, reflectivity, and attitude by processing simulated light curve data with various estimation algorithms. These simulated light curves have been produced using one of several existing analytic Bidirectional Reflectance Distribution Function (BRDF) models.

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20

Mahdere, Yafet. "Egenskap och precision av GNSS BeiDou, Navstar (GPS), GLONASS samt kombinationen av GPS/GLONASS." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-83207.

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Eftersom att både GNSS GPS och GLONASS har många likheter så finns möjlighet att utnyttja systemen i kombination. Dock föreligger olikheter vilket gör att systemen inte är fullkomlig kompatibla med varandra. Diskrepans i koordinater och tidsram utgör ett stort hinder för att kombinera dessa system. Men lösningar för koordinatstransformering har tagits fram för att eliminera dessa divergenser (Roßbach, 2001) BeiDou GNSS system till skillnad från GNSS GPS/GLONASS är ett av det senaste etablerade navigationssystem, vilket ställer frågor för användare om systemets kvalitéer och brister. Denna stud

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21

Miller, David Robert. "Development of a knowledge-based system for mapping bracken in upland Scotland." Thesis, University of Aberdeen, 1992. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU045243.

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The Scottish Office Department of Agriculture and Fisheries Department has been concerned to know the area of bracken (Pteridium aquilinum ) in Scotland and how rapidly it is spreading. It offers a potential danger to animal health and a devaluation of land for agricultural practice. Bracken is present in patches which are often difficult to delimit because of variable density and appearance throughout the year and is not consistently identifiable at a single minimum spatial resolution. Bracken provided a candidate vegetation type for prototyping a knowledge-based system (KBS) which synthesize

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22

Alvain, Séverine. "Etude de la distribution des principaux groupes de phytoplancton par télédétection satellitaire : développement de la méthode PHYSAT à partir des données GeP&CO et application à l'archive SEAWIFS entre 1998 et 2004." Paris 7, 2005. https://tel.archives-ouvertes.fr/tel-00157372.

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23

Peter, Christina. "Molekulargenetische Charakterisierung von Schafrassen Europas und des Nahen Ostens auf der Basis von Mikrosatelliten." Wettenberg VVB Laufersweiler, 2005. http://geb.uni-giessen.de/geb/volltexte/2006/2729/index.html.

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24

French, John. "Satellite technology for tracking birds and sea mammals." Thesis, University of Aberdeen, 1986. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU362526.

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Burgeoning world communication networks indicate a period of intense investment in space technology, this makes it a good point in time to pose the question: Is there a satellite location system capable of remotely recording the track of an electronics package made small enough for a bird to carry? Clearly a solution for birds will considerably advance the possibility of tracking other wildlife and indeed almost any artefact. The laws of nature give a finite working lifetime to all earth satellites. This and the steady advance of technology means that satellite systems are deployed and fade fr

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25

Cheng, Heng Seng. "Enhancement of asynchronous transfer mode over satellite links." Thesis, University of Aberdeen, 1998. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU106658.

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This thesis is a study on the issues involved in implementing asynchronous transfer mode (ATM) over satellite links and the ways in which ATM can be optimised to achieve better performance over such links. The main issue is the impact of errors introduced by the satellite links on the performance of ATM. Options to improve the performance of ATM over SATCOM have been identified and they are: (i) increase transmit power, (ii) FEC, (iii) adoption of an alternative ATM architecture, (iv) extensive to commercial-off-the-shelf (COTS) ATM equipments and (v) construction of ATM protocol enhancers. Th

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26

Kok, Tan Cheng. "Robust packet multicast service over a satellite link." Thesis, University of Aberdeen, 1997. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU602040.

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The aim of this thesis is to investigate and understand the issues involved in using multicast communications over a non-reliable satellite link and to suggest suitable methods to improve multicast services when used on packet networks. Point-to-multipoint communications have been used for distribution of data. These are mainly found on circuit switched networks where there is bandwidth allocation, ensuring a good transmission link. However, as packet switched networks become more evolved due to their interesting properties of being able to share the available bandwidth, multicast communicatio

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27

Pandey, Madhav Prasad. "Molecular assessment of genetic diversity and population differentiation of hulless barley (Hordeum vulgare L.) landraces from the Himalayas of Nepal and its relevance for barley breeding." Göttingen : Cuvillier, 2006. http://geb.uni-giessen.de/geb/volltexte/2007/3880/index.html.

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28

Samaraweera, Nihal Kithsiri Gamage. "Robust connection-less service over a packet satellite link." Thesis, University of Aberdeen, 1995. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU079124.

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The intention of the study presented in this thesis is to obtain an understanding of the issues involved in using connection-less services over a non-reliable satellite link and to suggest suitable solutions to enhance packet communication services. Particular attention is paid to using VSAT systems for interconnecting LANs through satellite links. A detailed study of Connection-Less Services (CLNS) and end to end transport protocols that use the CLNS over a satellite link with different propagation conditions is presented. Since most existing link, network and transport protocols were origina

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Pang, Siong Loon. "A satellite modem for packet traffic under partial band jamming." Thesis, University of Aberdeen, 1997. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU090544.

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Most contemporary modems provide a bit-oriented service at the physical layer of the OSI reference model. They do not provide any specific support for packet data transmission. A novel Hop-Aligned Slow Frequency Hopping (HA-SFH) concept is proposed to provide a packet traffic service in a Partial Band Jamming (PBJ) environment. Frequently, SFH is used together with deep interleaving and powerful Forward Error Correction (FEC) to combat PBJ. The proposed HA-SFH exploits the error control mechanism of the link layer packet protocol and reduces the data redundancy by using a low gain FEC, it resu

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Salleh, Ahmad Zaki Mohd. "Transmission of time critical data over a packet satellite link." Thesis, University of Aberdeen, 1994. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU068949.

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This thesis presents some new techniques in frame oriented transmission systems with particular emphasis on HDLC (High Level Data Link Control) links. The advent of multimedia and applications requiring high bandwidth has prompted the development of high performance networks. In addition to that, accessibility is also an important issue. Satellite links have become a major contributor in providing access to larger networks where terrestrial connections are not possible due to geographical constraints. The development of VSATs (Very Small Aperture Terminal) has further increased the interest in

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31

Alfaro, Alejandro. "In situ hybridization of the feline major satellite DNA FA-SAT in feline fibrosarcoma cell lines and feline fibrosarcoma tissue sections." Giessen DVG Service, 2009. http://geb.uni-giessen.de/geb/volltexte/2009/7271/index.html.

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32

Wan, Ping-Sum. "Throughput optimisation of a satellite communication link for a robust packet service." Thesis, University of Aberdeen, 1994. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU068969.

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This thesis is set to study the efficiency of various error control techniques to provide a robust service on a packet oriented satellite link. Various Automatic Repeat reQuest (ARQ) techniques are discussed and the implementation of these techniques to a data link layer protocol, the HDLC, is studied and comparisons of their throughput performance are made. A new method (the R<SUB>m</SUB> technique) of monitoring the noise condition on a link is introduced which is capable of making estimations of the noise level on the link continuously by passively observing the probability of successful tr

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33

Gottardi, Beatrice. "Automatic methods for crop classification by merging satellite radar (sentinel 1) and optical (sentinel 2) . data and artificial intelligence analysis." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/20635/.

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Land use and land cover maps can support our understanding of coupled human- environment systems and provide important information for environmental modelling and water resource management. Satellite data are a valuable source for land use and land cover mapping. However, cloud-free or weather independent data are necessary to map cloud-prone regions. Merging radar with optical images would increase the accuracy of the study. Agricultural land cover is characterized by strong variations within relatively short time intervals. These dynamics are challenging for land cover classifications on th

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Prudhomme, Jorian. "Phlébotomes et écosystèmes : impact des facteurs biotiques et abiotiques sur la structure génétique et phénotypique des populations." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS027/document.

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Les phlébotomes sont des insectes hématophages appartenant à la famille des Psychodidae et à la sous-famille des Phlebotominae. Cet insecte diptère, jaunâtre, relativement petit (2 à 3 mm) compte environ 800 espèces. 70 de ces espèces ont été identifiées comme vecteurs potentiels dont une quarantaine sont des vecteurs prouvés. Ils peuvent transmettre différents pathogènes dont les principaux sont les leishmanies et les phlébovirus. Ce travail de thèse est focalisé sur les phlébotomes vecteurs de la leishmaniose. Les leishmanioses sont des maladies parasitaires causées par un protozoaire du gen

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Musa, Khalid Bin. "Identifying Land Use Changes and It's Socio-Economic Impacts : A Case Study of Chacoria Sundarban in Bangladesh." Thesis, Linköping : Linköping University. Department of Computer and Information Science, 2008. http://www.diva-portal.org/smash/get/diva2:2076/FULLTEXT03.

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Duarte, Vagner da Silva. "Feições oceanográficas observadas no noroeste do Mar de Weddell e no Estreito de Bransfield (Antártica), a partir de relações entre o retroespalhamento SAR e medições de espessura do gelo marinho." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/94762.

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A quase inacessibilidade de grandes partes do Oceano Austral torna o conhecimento da espessura do gelo marinho limitado. Esta informação é essencial para a determinação do balanço de massa deste componente da criosfera. Na transição do inverno para a primavera de 2006, uma equipe de pesquisadores, coletou uma série de perfis de espessura de gelo marinho no norte e noroeste do mar de Weddell. Eles estavam a bordo do navio de pesquisa alemão Polarstern do Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI) e utilizaram um sistema composto por um sensor eletromagnético

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Luchessi, Augusto Ducati. "Envolvimento do fator de início de tradução de eucariotos 5A (elF5A) na diferenciação de células-tronco da musculatura esquelética." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/42/42137/tde-04102007-095125/.

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A proteína eIF5A apresenta um resíduo exclusivo de aminoácido chamado hipusina formado por modificação pós-traducional envolvendo espermidina como substrato. Neste estudo, observamos que a expressão de eIF5A é intensificada ao longo da diferenciação de células-tronco progenitoras de fibras musculares (células satélites) e que a inibição da hipusinação com GC7 bloqueia a diferenciação. Associado a esse bloqueio encontramos aumento do consumo de glicose e produção de lactato, diminuição da descarboxilação de glicose e palmitato, redução da proliferação celular e alteração do perfil traducional,

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Chang, Ning-Hsuan, and 張寧軒. "Satellite Imagery Geo-Positioning Aided by Aerial Imagery." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/33434483477940566425.

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碩士<br>國立臺灣大學<br>土木工程學研究所<br>99<br>The 3-D geo-positioning errors of satellite imagery are mainly affected by the quality of exterior orientation parameters, image point measurements and intersection geometry. Among them, pose-related parameters are vital to the geo-positioning accuracy considering the long distance from a satellite to the ground while taking imagery. In general, high quality exterior orientation parameters can be calculated by utilizing a great amount of as well as well distributed control points, or refined by only a few control points if relatively precise exterior orientati

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Ibikunle, Olumide B. "Enhancements of CFDAMA protocol for multi-service applications in a GEO broadband satellite network." Thesis, 2005. http://hdl.handle.net/2429/16834.

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The bursty behavior and the diverse quality of service (QoS) requirements of the component traffic generated at the user terminals (UTs) in current broadband satellite networks (BSN's) have been shown in numerous research projects to necessitate the use of dynamic medium access control (MAC) protocols such as the combined free/demand assigned multiple access (CFDAMA) protocol for efficient statistical multiplexing of the traffic from the several UTs on the uplink channel. Several predictive algorithms have been proposed to enhance the CFDAMA protocol performance by estimating the dynamic trend

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Su, Hua [Verfasser]. "Precise orbit determination of global navigation satellite system of second generation (GNSS-2) : orbit determination of IGSO, GEO and MEO satellites / Hua Su." 2000. http://d-nb.info/962099635/34.

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Förster, Michael [Verfasser]. "Integration of geo-information in classification processes of satellite imagery for NATURA 2000 monitoring / vorgelegt von Michael Förster." 2008. http://d-nb.info/991987845/34.

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Merkle, Nina Marie. "Geo-localization Refinement of Optical Satellite Images by Embedding Synthetic Aperture Radar Data in Novel Deep Learning Frameworks." Doctoral thesis, 2018. https://repositorium.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-20181206863.

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Every year, the number of applications relying on information extracted from high-resolution satellite imagery increases. In particular, the combined use of different data sources is rising steadily, for example to create high-resolution maps, to detect changes over time or to conduct image classification. In order to correctly fuse information from multiple data sources, the utilized images have to be precisely geometrically registered and have to exhibit a high absolute geo-localization accuracy. Due to the image acquisition process, optical satellite images commonly have an absolute geo-loc

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Joshi, Prachi. "Analysis and Detection of Ionospheric Depletions over the Indian Region in the Context of Satellite Navigation." Thesis, 2013. http://etd.iisc.ernet.in/2005/3419.

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Satellites have revolutionized navigation by making it more universal, accessible and ac- curate. Global Positioning System (GPS) is the most widely used satellite navigation system in the world. However, it is prone to errors from various sources such as the ionosphere, troposphere and clock biases. In order to make the system very accurate and reliable, especially to meet the requirements of safety-critical applications, Satellite Based Augmentation Systems (SBAS) have recently been designed in various countries to augment the GPS by providing corrections for its errors. An Indian SBAS calle

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Teo, Yong Meng. "ALiCE: A Java-based Grid Computing System." 2003. http://hdl.handle.net/1721.1/3758.

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A computational grid is a hardware and software infrastructure that provides dependable, consistent, pervasive, and inexpensive access to high-end computational capabilities. This talk is divided into three parts. Firstly, we give an overview of the main issues in grid computing. Next, we introduce ALiCE (Adaptive and Scalable Internet-based Computing Engine), a platform independent and lightweight grid. ALiCE exploits object-level parallelism using our Object Network Transport Architecture (ONTA). Grid applications are written using ALiCE Object Programming Template that hides the complexitie

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ang, Song-Ren, and 王崧任. "A Tracking System of the Moving Ground Station for GEO Satellites." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/86976506035813109270.

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碩士<br>國立高雄應用科技大學<br>電子與資訊工程研究所碩士班<br>95<br>Satellite communication has many advantages over any other communication’s network whenever the information is targeted at a large population of receivers or when they are spread over large areas. This makes satellite communications to be especially suitable for the provision of multimedia applications in remote areas that would be otherwise very expensive to reach with terrestrial cables or even terrestrial radio links. In order to receive better transmission quality, the direction of the antenna of the synchronous satellite needs to be operated accu

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Wang, Jianguo Jack Surveying &amp Spatial Information Systems Faculty of Engineering UNSW. "Integration of GPS, INS and pseudolite to geo-reference surveying and mapping systems." 2007. http://handle.unsw.edu.au/1959.4/40675.

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Despite significant progress in GPS/INS integration-based direct geo-referencing (DGR) technology over the past decade, its performance still needs to be improved in terms of accuracy and tolerance to GPS outages. This is mainly due to the limited geometric strength of the GPS satellite constellation, the quality of INS and the system integration technology. This research is focused on pseudolite (PL) augmentation to enhance the geometric strength of the GPS satellite constellation, and the Neural Network (NN) aided Kalman filter (KF) system integration algorithm to improve the geo-referencing

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Filali, Fethi. "Déploiement de service multicast dans des environnements hétérogènes." Phd thesis, 2002. http://tel.archives-ouvertes.fr/tel-00406509.

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La première partie de cette thèse est consacrée au problème de partage de ressources réseaux entre les flux multicast. Tout d'abord, nous proposons MFQ (Multicast Fair Queuing), un mécanisme simple de gestion active de files d'attente qui passe à l'échelle et permettant le partage équitable de la bande passante entre les flux multicast et ceci en utilisant une fonction d'équité configurée à l'avance. Ensuite, nous décrivons SBQ (Service Based Queuing), un ordonnanceur simple utilisant deux files d'attentes afin d'améliorer le partage de ressources entre les flux unicast et multicast. Une nouve

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Grenier, Patrick. "Étude de l'effet d'inhibition du gel induit par les sulfates dans les nuages arctiques à l'aide des mesures satellitaires de CloudSat et CALIPSO." Thèse, 2010. http://www.archipel.uqam.ca/3790/1/D1968.pdf.

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Les sulfates issus de la pollution industrielle d'Eurasie et transportés à travers la basse troposphère arctique durant l'hiver sont soupçonnés d'altérer les propriétés des nuages au point d'affecter significativement le climat de cette région. Un de leurs effets potentiellement importants est l'inhibition du gel des gouttelettes en cristaux de glace (effet IGIS), qui favoriserait les nuages formés de cristaux à grande taille et déclencherait un mécanisme associé à une anomalie de refroidissement à la surface. Grâce à de récentes données satellitaires, issues des missions CloudSat et CALIPSO,

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Rao, Goparaju Nagendra. "New Theoretical And Experimental Studies On Spacecraft Attitude Determination Using Star Sensors." Thesis, 2005. http://etd.iisc.ernet.in/handle/2005/1482.

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Gleitsmann, Anke [Verfasser]. "Exploiting the spatial information in high resolution satellite data and utilising multi-source data for tropical mountain forest and land cover mapping / vorgelegt von Anke Gleitsmann, geb. Brötje." 2006. http://d-nb.info/982212577/34.

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