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Dissertations / Theses on the topic 'Satellite navigation systems'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Bhattarai, S. "Satellite clock time offset prediction in global navigation satellite systems." Thesis, University College London (University of London), 2015. http://discovery.ucl.ac.uk/1464288/.

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In an operational sense, satellite clock time offset prediction (SCTOP) is a fundamental requirement in global navigation satellite systems (GNSS) tech- nology. SCTOP uncertainty is a significant component of the uncertainty budget of the basic GNSS pseudorange measurements used in standard (i.e not high-precision), single-receiver applications. In real-time, this prediction uncertainty contributes directly to GNSS-based positioning, navigation and timing (PNT) uncertainty. In short, GNSS performance in intrinsically linked to satellite clock predictability. Now, satellite clock predictability

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2

Lehner, Andreas. "Multipath channel modelling for satellite navigation systems /." Aachen : Shaker, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016152468&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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3

FORMICHELLA, VALERIO. "Time metrology in Global Navigation Satellite Systems." Doctoral thesis, Politecnico di Torino, 2018. http://hdl.handle.net/11583/2713382.

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Precise timekeeping is at the basis of any Global Navigation Satellite System. In this thesis, after an extensive introduction on time and frequency metrology, some of the basic time-related aspects of navigation systems are discussed, and new ideas and solutions are presented. In the first part of the work, the most relevant innovative contributions are related to the mathematical clock model and to the stability analysis of atomic clocks affected by frequency jumps, as well as to the development of a new averaging algorithm for the generation of a robust time scale from an ensemble of atomic

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4

Thongtan, Thayathip. "Simultaneous single epoch satellite clock modelling in global navigation satellite systems." Thesis, University College London (University of London), 2008. http://discovery.ucl.ac.uk/16782/.

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In order to obtain high quality positions from navigation satellites, range errors have to be identified and either modelled or estimated. This thesis focuses on satellite clock errors, which are needed to be known because satellite clocks are not perfectly synchronised with navigation system time. A new approach, invented at UCL, for the simultaneous estimation, in a single epoch, of all satellite clock offsets within a Global Navigation Satellite System (GNSS) from range data collected at a large number of globally distributed ground stations is presented. The method was originally tested us

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5

Tetewsky, Avram Ross Jeff Soltz Arnold Vaughn Norman Anszperger Jan O'Brien Chris Graham Dave Craig Doug Lozow Jeff. "Making sense of inter-signal corrections : accounting for GPS satellite calibration parameters in legacy and modernized ionosphere correction algorithms /." [Eugene, Ore. : Gibbons Media & Research], 2009. http://www.insidegnss.com/auto/julyaug09-tetewsky-final.pdf.

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"Author biographies are available in the expanded on-line version of this article [http://www.insidegnss.com/auto/julyaug09-tetewsky-final.pdf]"<br>"July/August 2009." Web site title: Making Sense of GPS Inter-Signal Corrections : Satellite Calibration Parameters in Legacy and Modernized Ionosphere Correction Algorithms.

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6

Ene, Alexandru. "Utilization of modernized global navigation satellite systems for aircraft-based navigation integrity /." May be available electronically:, 2009. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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7

Gopal, Pooja. "Performance analysis and enhancement of free space optical satellite links." Thesis, IIT Delhi, 2016. http://localhost:8080/xmlui/handle/12345678/7226.

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8

Ucar, Alper. "A subsampling delta-sigma modulator for global navigation satellite systems." Thesis, University of Westminster, 2010. https://westminsterresearch.westminster.ac.uk/item/9018w/a-subsampling-delta-sigma-modulator-for-global-navigation-satellite-systems.

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Next-generation Global Navigation Satellite Systems (GNSS) receivers should be capable of processing multi-frequency signals in order to provide better positioning accuracy and signal availability to end-user. Nevertheless, the realization of such receivers with conventional receiver architectures leads to power-hungry devices and hinders monolithic integration of the receiver. Multi–frequency receivers can be realized with lower power and cost by performing sub-Nyquist sampling (subsampling) at Radio Frequency (RF). In practice, the use of subsampling receivers has been limited due to their p

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9

Bursais, Abdulmalek. "Accelerometry and Global Navigation Satellite Systems Derived Training Loads." Digital Commons @ East Tennessee State University, 2021. https://dc.etsu.edu/etd/3939.

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The objectives of this dissertation include 1) to review accelerometry and Global Navigation Satellite System (GNSS) derived measures used to monitor training load, 2) to investigate the validity and reliability of accelerometers (ACCs) to identify stepping events and quantify training load, 3) to assess the relationship between accelerometry and Global Navigation Satellite Systems (GNSS) derived measures in quantifying training load. In Study I, acceleration data was collected via two tri-axial ACC (Device A and Device B) sampling at 100Hz mounted closely together at the xiphoid process level

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10

Alsaaq, Faisal. "Determination of Tide Height Using Global Navigation Satellite Systems." Thesis, Curtin University, 2017. http://hdl.handle.net/20.500.11937/59047.

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This research studies the methodology of using GNSS for tide estimation. It mainly investigates suitable filtering methods to extract tide signal from temporal changes in GNSS estimated height of the sea surface. These GNSS heights were estimated in nearshore and offshore environments and factors affecting tide estimation in both environments were analysed. The results suggest that GNSS estimated tides is suitable for hydrographic surveying, marine geodesy and in real time for natural hazard warning systems.

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11

Dodge, Michael. "Global navigation satellite systems (GNSS) and the GPS-Galileo agreement." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=106582.

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The law of global navigation satellite systems is a nascent, yet growing academic field. The subject matter it studies, GNSS, has been and is becoming ever-more important in the modern world, both for transportation, as well as for commerce. Indeed, globalization has seen billions of euros in trade associated with both nautical and aviation shipping, and this trend is likely to grow larger with the passage of time. Additionally, the nations of the world are fast realizing the potential of GNSS to make their aviation industries more robust and efficient, with integration of GNSS into air traffi

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12

Poppe, Dorothy Carol. "Coverage and performance prediction of DGPS systems employing radiobeacon transmissions." Thesis, Bangor University, 1995. https://research.bangor.ac.uk/portal/en/theses/coverage-and-performance-prediction-of-dgps-systems-employing-radiobeacon-transmissions(a53cc0f4-acc4-4523-969d-2f2c87d38552).html.

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13

Abdalla, K. A. "An analysis of transit and GPS point positioning results." Thesis, University of Newcastle Upon Tyne, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381397.

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14

Meggs, Robert W. "Mapping of ionospheric total electron content using global navigation satellite systems." Thesis, University of Bath, 2005. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.410922.

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15

Deambrogio, Lina <1979&gt. "Enabling Techniques and Algorithms for Integrated Communication and Navigation Satellite Systems." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amsdottorato.unibo.it/4336/1/Deambrogio_Lina_Tesi.pdf.

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This thesis presents the outcomes of my Ph.D. course in telecommunications engineering. The focus of my research has been on Global Navigation Satellite Systems (GNSS) and in particular on the design of aiding schemes operating both at position and physical level and the evaluation of their feasibility and advantages. Assistance techniques at the position level are considered to enhance receiver availability in challenging scenarios where satellite visibility is limited. Novel positioning techniques relying on peer-to-peer interaction and exchange of information are thus introduced. More spe

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Deambrogio, Lina <1979&gt. "Enabling Techniques and Algorithms for Integrated Communication and Navigation Satellite Systems." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amsdottorato.unibo.it/4336/.

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This thesis presents the outcomes of my Ph.D. course in telecommunications engineering. The focus of my research has been on Global Navigation Satellite Systems (GNSS) and in particular on the design of aiding schemes operating both at position and physical level and the evaluation of their feasibility and advantages. Assistance techniques at the position level are considered to enhance receiver availability in challenging scenarios where satellite visibility is limited. Novel positioning techniques relying on peer-to-peer interaction and exchange of information are thus introduced. More spe

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17

MUSUMECI, LUCIANO. "Advanced signal processing techniques for interference removal in Satellite Navigation Systems." Doctoral thesis, Politecnico di Torino, 2014. http://hdl.handle.net/11583/2550137.

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This thesis investigates the use of innovative interference detection and mitigation techniques for GNSS based applications. The main purpose of this thesis is the development of advanced signal processing techniques outperforming current interference mitigation algorithms already implemented in off-the-shelf GNSS receivers. State-of-the-art interference countermeasures already investigated in literature, which process the signal at the ADC output, provide interference components suppression in the time domain or in the frequency domain, thus leading to a significant signal degradation in harm

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18

Bai, Jie. "Robust navigation algorithms for aircraft precision approach, landing and surface movement using global navigation satellite systems." Thesis, Imperial College London, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.501434.

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19

Jaugey, Delphine. "The use of Global Navigation Satellite Systems (GNSS) for air navigation purposes : benefits, vulnerabilities of the systems and legal issues." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99141.

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The existing air navigation services have many shortcomings and a reform was necessary. The new systems (CNS/ATM systems) will be largely dependent on Global Navigation Satellite Systems (GNSS) which can bring significant benefits to air navigation in terms of safety, efficiency, capacity, and economy. However, GNSS have weaknesses which can be reduced but will never be fully eliminated. Depending solely on a system that can be disrupted is not acceptable for safety of life applications, such as aviation. The implementation of GNSS also raises unique legal issues and ICAO has been working on t

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20

Ziebart, Marek. "High precision analytical solar radiation pressure modelling for GNSS spacecraft." Thesis, University of East London, 2001. http://roar.uel.ac.uk/3563/.

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In global navigation satellite systems (GNSS) a fundamental operational component is the calculation of the orbits of the system spacecraft. This requires understanding and modelling the forces that act on the spacecraft. Solar radiation pressure (SRP) is the force caused by the impact of solar photons on the spacecraft surface. For GNSS spacecraft this is a significant force. If SRP is not included in the force model, then the calculated position of the spacecraft can be in error by between one and two hundred metres after one 12-hour orbit. SRP can be modelled using either analytical or empi

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21

Tabatabaei, Balaei Asghar Surveying &amp Spatial Information Systems Faculty of Engineering UNSW. "Detection, characterization and mitigation of interference in receivers for global navigation satellite systems." Publisher:University of New South Wales. Surveying & Spatial Information Systems, 2007. http://handle.unsw.edu.au/1959.4/40545.

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GPS has become very popular in recent years. It is used in wide range of applications including aircraft navigation, search and rescue, space borne attitude and position determination and cellular network synchronization. Each application places demands on GPS for various levels of accuracy, integrity, system availability and continuity of service. Radio frequency interference (RFI) which results from many sources such as TV/FM harmonics, radar or mobile satellite systems, presents a challenge to the use of GPS. It can affect all the service performance indices mentioned above. To improve the

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22

Lehner, Andreas [Verfasser]. "Multipath Channel Modelling for Satellite Navigation Systems : Mehrwegekanalmodellierung für Satellitennavigationssysteme / Andreas Lehner." Aachen : Shaker, 2007. http://d-nb.info/1164339141/34.

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23

Moradi, Ramin. "Carrier multipath mitigation in linear combinations of Global Navigation Satellite Systems measurements." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/30820.

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Global Navigation Satellite Systems (GNSS) are the main systems that provide positioning, navigation and timing at a global level. They are being used in numerous applications in different sectors including transport, military, oil & gas, agriculture as well as location based services. A significant number of these applications require centimetre-level positioning accuracy, a challenging feat due to the many error sources that affect GNSS measurements. These include errors at the satellite, propagation medium, and receiver levels. Most of these errors can be mitigated by modeling, or by exploi

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24

Ceccato, Silvia. "Security in Global Navigation Satellite Systems: authentication, integrity protection and access control." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3425426.

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In the last decades the use of Global Navigation Satellite System (GNSS) positioning has spread through numerous commercial applications and permeated our daily life. Matching this growing interest for precise positioning worldwide, new systems have been designed and deployed, such as Galileo, the European GNSS. As these systems are relied upon in an ever growing number of safety critical applications, it is vital to devise protections and countermeasures against any threats that may target GNSS modules to harm underlying service. The potential economical advantage that derives from disruptin

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Escudero, San José Laura. "The European Satellite Navigation Program : policy analysis and recommendations for the future." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/65502.

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Thesis (S.M. in Technology and Policy)--Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 143-148).<br>The European Satellite Navigation Program is a case study that combines Technical / Public / Private aspects in an integrative way. Therefore, it is a sound case for a TPP thesis candidate. This thesis analyzes the European Union policies for the Galileo program, Europe's bid to have its own Global Navigation Satellite System (GNSS). Galileo is the Europe

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26

Grant, Alan James. "Availability, continuity, and selection of maritime DGNSS radiobeacons." Thesis, Bangor University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248894.

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27

Kaiser, Stefan. "Legal implications of satellite based communication navigation and surveillance systems for civil aviation." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22385.

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This thesis deals with the legal problems arising from the introduction of satellite based communication, navigation and surveillance systems for civil aviation. The technical innovations are asking for an international institutional implementation, which has not yet started.<br>After a brief look at the technical aspects of the new systems (Chapter II), existing institutional arrangements of international satellite systems, air-navigation infrastructure and air traffic control are outlined (Chapter III). A legal analysis presents the obstacles and alternatives future institutional arrangement

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28

Morin, Matthew Robertson. "Design and Analysis of Receiver Systems in Satellite Communications and UAV Navigation Radar." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/4210.

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The design of a low cost electronically steered array feed (ESAF) is implemented and tested. The ESAF demonstrated satellite tracking capabilities over four degrees. The system was compared to a commercial low-noise block downconverter (LNBF) and was able to receive the signal over a wider angle than the commercial system. Its signal-to-noise ratio (SNR) performance was poor, but a proof of concept for a low cost ESAF used for tracking is demonstrated. Two compact low profile dual circularly polarized (CP) reflector feed antenna designs are also analyzed. One of the designs is a passive antenn

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29

Pojani, Giacomo <1989&gt. "Interference Mitigation and Localization Based on Time-Frequency Analysis for Navigation Satellite Systems." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amsdottorato.unibo.it/8595/1/GPojani_PhD_Thesis.pdf.

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Interference Mitigation and Localization Based on Time-Frequency Analysis for Navigation Satellite Systems<br>Nowadays, the operation of global navigation satellite systems (GNSS) is imperative across a multitude of applications worldwide. The increasing reliance on accurate positioning and timing information has made more serious than ever the consequences of possible service outages in the satellite navigation systems. Among others, interference is regarded as the primary threat to their operation. Due the recent proliferation of portable interferers, notably jammers, it has now become com

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30

Church, Christopher Michael. "Estimation of Adaptive Antenna Induced Phase Biases in Global Navigation Satellite Systems Receiver Measurements." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1257792743.

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31

IMAM, RAYAN MOHAMED ELMUBARAK ALI. "Global Navigation Satellite Systems as Signals of Opportunity for Environmental Applications: Reflectometry and Scintillation." Doctoral thesis, Politecnico di Torino, 2022. https://hdl.handle.net/11583/2973801.

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32

QIN, WENJIAN. "Study and Analysis of Advanced Countermeasures against Interference Threats for Global Navigation Satellite Systems." Doctoral thesis, Politecnico di Torino, 2021. http://hdl.handle.net/11583/2903480.

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33

Cheng, Cheng. "GNSS Multipath and Interference Mitigation Using Bayesian Methods." Thesis, Toulouse, ISAE, 2015. http://www.theses.fr/2015ESAE0011.

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Les récepteurs GNSS sont utilisés pour estimer la position et la vitesse d’un véhicule à partir de signauxtransmis par des satellites. L’estimation est habituellement réalisée en plusieurs étapes. Lesparamètres des signaux qui concernent le délai de propagation, la phase et la fréquence Dopplerde la porteuse, sont estimés et exploités pour estimer des mesures de pseudo-distances et de delta-distances.Ces mesures sont ensuite utilisées comme observation de la position et de la vitesse parl’algorithme de navigation qui délivre l’état du véhicule. En environnement GNSS dégradé les signauxémis par

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34

Addison, Henry. "Consideration with regard to global navigation satellite systems, GNSS, of the establishment of a legal framework." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ29816.pdf.

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35

Addison, Henry 1955. "Consideration with regard to global navigation satellite systems (G.N.S.S.) of the establishment of a legal framework." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27441.

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Global Navigation Satellite Systems (GNSS) are a key technology underpinning the International Civil Aviation Organization's (ICAO's) communications, navigation, surveillance/air traffic management concept. The fact the de facto GNSS, the Global Positioning System (GPS) is a military system owned, operated and controlled by the United States raises many legal and institutional issues for civil aviation.<br>This thesis will discuss the nature of GPS/GNSS as a global utility, ICAO's evolutionary path toward a civil GNSS (ie one independent from GPS) and trace the development of the institutional

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36

Bruckner, Dean C. "On the Treatment of Noise and Conspiring Bias in Dual-Frequency Differential Global Navigation Satellite Systems." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1262040825.

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37

Braasch, Michael S. "On the characterization of multipath errors in satellite-based precision approach and landing systems." Ohio : Ohio University, 1992. http://www.ohiolink.edu/etd/view.cgi?ohiou1173748635.

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38

Bommakanti, Hemanth Ram Kartik. "Impact of Time Synchronization Accuracy in Integrated Navigation Systems." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-260239.

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Global Navigation Satellite System/Inertial Measurement Unit (GNSS/IMU) Integrated Navigation Systems (INS) integrate the positive features of GNSS and IMU for optimal navigation guidance in high accuracy outdoor navigation systems, for example using Extended Kalman Filter (EKF) techniques. Time synchronization of IMU data with precise GNSS based time is necessary to accurately synchronize the two systems. This must be done in real-time for time sensitive navigation applications such as autonomous vehicles. The research is done in two parts. The first part is the simulation of inaccurate time-

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39

Andreotti, Marcus Talcir. "Global navigation satellite systems in urban and indoor environments : a new tool to visualize, understand and use multipath." Thesis, University of Nottingham, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438521.

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40

Zinas, N. "Development and assessment of a new rover-enhanced network based data processing strategy for Global Navigation Satellite Systems." Thesis, University College London (University of London), 2010. http://discovery.ucl.ac.uk/19913/.

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Real Time GNSS networks established across countries over the last fifteen years, provide centimetre level accuracy for a wide range of applications differing from precise ship docking to land surveying. Public sector organizations deploy GNSS Networks to support infrastructure projects. Private companies establish their own networks for commercial or private use. The number of users of these networks has steadily increased over the years, and a potential new market has been created. This thesis focuses on the exploitation of the advantages of using multiple users operating within a GNSS netwo

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Munghemezulu, Cilence. "Determination of geodetic velocity field parameters for the African tectonic plate using the technique of Global Navigation Satellite Systems." Diss., University of Pretoria, 2013. http://hdl.handle.net/2263/40360.

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Space geodesy is one of the disciplines that contributes uniquely to the global society; its applications have grown to such an extent that system Earth is better understood today. The current accuracy of the Global Navigation Satellite Systems (GNSS) technique is below centimetre level and this allows very accurate determination of velocity field parameters. This study focused on utilizing GNSS to determine the inter-continental plate velocity field for Africa in support of the African Geodetic Reference Frame (AFREF). Data spanning 12.4 years were processed in the International Terrestrial R

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Steigenberger, Peter [Verfasser], Urs [Akademischer Betreuer] [Gutachter] Hugentobler, Harald [Gutachter] Schuh, and Thomas [Gutachter] Wunderlich. "Accuracy of Current and Future Satellite Navigation Systems / Peter Steigenberger ; Gutachter: Harald Schuh, Urs Hugentobler, Thomas Wunderlich ; Betreuer: Urs Hugentobler." München : Universitätsbibliothek der TU München, 2016. http://d-nb.info/1137323604/34.

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Швець, Валеріян Анатолійович, та Тетяна Вікторівна Мелешко. "Напрями забезпечення доступності і цілісності інформації глобальних навігаційних супутникових систем". Thesis, RS Global Sp. z O.O. Warsaw, Poland, 2020. http://er.nau.edu.ua/handle/NAU/41256.

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Based on the analysis of reports and literature on the vulnerability of global navigation satellite systems, the robot presents a developed threat model and an intruder model for navigation information. Using the developed models, organizational and technical measures to protect information are determined. Directions for improving consumer equipment to jamming are given. Organizational measures for protecting against jamming are described.

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Куценко, Олександр Вікторович, та Oleksandr V. Kutsenko. "Методи диференційної навігації повітряних суден за сигналами глобальних навігаційних супутникових систем". Thesis, Національний авіаційний університет, 2021. https://er.nau.edu.ua/handle/NAU/52287.

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Дисертаційна робота присвячена вирішенню актуальної науково-технічної задачі розробки методів диференційної навігації повітряних суден за сигналами глобальних навігаційних супутникових систем, що має важливе значення для підвищення безпеки польотів. Метою дисертаційної роботи є розробка і експериментальне дослідження нових і удосконалених методів диференційної навігації повітряних суден за сигналами multi-GNSS, при виконанні операцій: маневру в зоні аеродрому, здійснення заходу на посадку з вертикальним скеровуванням і по категорії. В дисертаційній роботі проведений аналіз документів провідн

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Butt, Safwat Irteza [Verfasser], Matthias [Akademischer Betreuer] Hein, Reiner S. [Gutachter] Thomä, and Achim [Gutachter] Dreher. "Compact adaptive planar antenna arrays for robust satellite navigation systems / Safwat Irteza Butt ; Gutachter: Reiner S. Thomä, Achim Dreher ; Betreuer: Matthias Hein." Ilmenau : TU Ilmenau, 2016. http://d-nb.info/1178166546/34.

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Jansen, Kai [Verfasser], Aydin [Gutachter] Sezgin, and Christina [Gutachter] Pöpper. "Detection and localization of attacks on satellite-based navigation systems / Kai Jansen ; Gutachter: Aydin Sezgin, Christina Pöpper ; Fakultät für Elektrotechnik und Informationstechnik." Bochum : Ruhr-Universität Bochum, 2019. http://d-nb.info/1185171924/34.

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Butt, Safwat Irteza [Verfasser], Matthias [Akademischer Betreuer] Hein, Reiner [Gutachter] Thomä, and Achim [Gutachter] Dreher. "Compact adaptive planar antenna arrays for robust satellite navigation systems / Safwat Irteza Butt ; Gutachter: Reiner S. Thomä, Achim Dreher ; Betreuer: Matthias Hein." Ilmenau : TU Ilmenau, 2016. http://nbn-resolving.de/urn:nbn:de:gbv:ilm1-2016000659.

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Kuratomi, Alejandro. "GNSS Position Error Estimated by Machine Learning Techniques with Environmental Information Input." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-262692.

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In Intelligent Transport Systems (ITS), specifically in autonomous driving operations, accurate vehicle localization is essential for safe operations. The localization accuracy depends on both position and positioning error estimates. Technologies aiming to improve positioning error estimation are required and are currently being researched. This project has investigated machine learning algorithms applied to positioning error estimation by assessing relevant information obtained from a GNSS receiver and adding environmental information coming from a camera mounted on a radio controlled vehic

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Havlík, Martin. "Využití satelitních navigačních systémů v dopravě." Master's thesis, Vysoká škola ekonomická v Praze, 2008. http://www.nusl.cz/ntk/nusl-5049.

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The work focuses on the application of satellite navigation systems in the different transport fields. It describes the general principle of operation of navigation systems, as well as its history and development. The following section describes the current navigation systems, the principle of operation, architecture and services. A separate chapter is devoted to being the European Galileo system and its services. Practical work deals with the applications according to the navigation systems across different transport sectors. In addition to the transport sector are given applications in other

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Van, de Heyde Valentino Patrick. "An Investigation of magnetic storm effects on total electron content over South Africa for selected periods in solar cycles 23 and 24." Thesis, University of the Western Cape, 2012. http://hdl.handle.net/11394/3997.

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>Magister Scientiae - MSc<br>The development of regional ionospheric Total Electron Content (TEC) models has contributed to understanding the behavior of ionospheric parameters and the coupling of the ionosphere to space weather activities on both local and global scales. In the past several decades, the International Global Navigation Satellite Systems Service (GNSS) networks of dual frequency receiver data have been applied to develop global and regional models of ionospheric TEC. These models were mainly developed in the Northern Hemisphere where there are dense network of ground based GPS

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