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Dissertations / Theses on the topic 'Autonomous satellites'

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Published: 4 June 2021

Last updated: 9 February 2022

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1

Anderson, Jason Lionel. "Autonomous Satellite Operations For CubeSat Satellites." DigitalCommons@CalPoly, 2010. https://digitalcommons.calpoly.edu/theses/256.

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In the world of educational satellites, student teams manually conduct operations daily, sending commands and collecting downlinked data. Educational satellites typically travel in a Low Earth Orbit allowing line of sight communication for approximately thirty minutes each day. This is manageable for student teams as the required manpower is minimal. The international Global Educational Network for Satellite Operations (GENSO), however, promises satellite contact upwards of sixteen hours per day by connecting earth stations all over the world through the Internet. This dramatic increase in

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2

Santiago, Luis. "AUTONOMOUS CONTROLS ALGORITHMFOR FORMATION FLYING OF SATELLITES." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2641.

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This document describes the design and analysis of the Navigation, Guidance and Control System for the KnightSat project. The purpose for the project is to test and demonstrate new technologies the Air Force would be interested in for research and development. The primary mission of KnightSat is to show how a constellation of satellites can maintain relative position with each other autonomously using the Microwave Electro Thermal (MET) thruster. The secondary mission is to use multiple satellite imagery to obtain 3 dimensional stereo photographs of observable terrain. Formation flying itself

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3

Badger, Stanley. "Autonomous detection, navigation, and propulsion for satellites." Kansas State University, 2009. http://hdl.handle.net/2097/1402.

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Master of Science<br>Department of Electrical and Computer Engineering<br>William B. Kuhn<br>With the increasing number of satellites and space debris in all orbits the need for individual satellites to be able to autonomously detect and determine methods to navigate around them is increasing. Even with continued input and control from a ground station, the ability for a satellite to act to save itself from obstacles not visible from ground stations, or if communications were temporarily lost could be key to saving millions of dollars in hardware as well as improving overall performa

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4

Ruiz-de-Azua, Ortega Joan Adrià. "Contribution to the development of autonomous satellite communications networks : the internet of satellites." Doctoral thesis, Universitat Politècnica de Catalunya, 2020. http://hdl.handle.net/10803/671780.

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The space is experiencing a revolution due to the em ergence of satellite services to satisfy environmental, socio-econom ic, and geo-political demands. Earth Observation satellite systems have become dependable resources for climate monitoring, modern agriculture, and other applications. The 5G incursion in the aerospace domain has promoted the satellites as promising platforms to achieve global coverage, and cope the limitations of ground facilities. These demands can be summarized in two system requirements: (1) increase of data transfer capacity, and (2) decrease of end-to-end com m

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5

Salazar, Kardozo Alexandros. "A High-Level Framework for the Autonomous Refueling of Satellite Constellations." Thesis, Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14534.

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Satellite constellations are an increasingly attractive option for many commercial and military applications. They provide a robust and distributed method of accomplishing the goals of expensive monolithic satellites. Among the many challenges that satellite constellations engender (challenges in control, coordination, disposal, and other areas), refueling is of particular interest because of the many methods one can use to refuel a constellation and the lifetime implications on the satellites. The present work presents a methodology for carrying out peer-to-peer refueling maneuvers within a

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6

Martinson, Nicholas S. "Obstacle avoidance guidance and control for autonomous satellites." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0041033.

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7

Hashida, Yoshikazu. "Analytical solution for autonomous determination of near circular orbits." Thesis, University of Surrey, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.274353.

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8

Aorpimai, Manop. "Low-thrust orbit control of LEO small satellites." Thesis, University of Surrey, 2000. http://epubs.surrey.ac.uk/843024/.

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In this thesis, we investigate the orbit control strategies of small satellites in Low Earth Orbits (LEO) where the disturbance effects are significant, in particular the nonspherical Earth and atmospheric drag effects. These orbits are not suitable to be controlled by using traditional ground-based control strategies which generally require high-thrust propulsion systems and other expensive resources, both onboard and in the ground segment. In order to react to those disturbances spontaneously and keep a small satellite at a pre-defined station using its limited resources, autonomous orbit co

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9

Nagarajan, N. "Autonomous Orbit Estimation For Near Earth Satellites Using Horizon Scanners." Thesis, Indian Institute of Science, 1994. http://hdl.handle.net/2005/155.

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Autonomous navigation is the determination of satellites position and velocity vectors onboard the satellite, using the measurements available onboard. The orbital information of a satellite needs to be obtained to support different house keeping operations such as routine tracking for health monitoring, payload data processing and annotation, orbit manoeuver planning, and prediction of intrusion in various sensors' field of view by celestial bodies like Sun, Moon etc. Determination of the satellites orbital parameters is done in a number of ways using a variety of measurements. These measurem

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10

Ramos, Bosch Pedro. "Improvements in autonomous GPS navigation of Low Earth Orbit satellites." Doctoral thesis, Universitat Politècnica de Catalunya, 2008. http://hdl.handle.net/10803/7019.

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Es defineix un satèl·lit d'òrbita baixa aquell que es troba a una alçada de fins a 2000 km per sobre de la superfície de la Terra. Degut al ràpid decaïment dels objectes propers a la superfície degut al fregament atmosfèric, s'accepta que l'alçada típica per un LEO esta entre 200 i 2000 km.<br/>Aquesta rang d'alçades fa que els LEO siguin utilitzats per un ampli rang d'aplicacions, com a repetidors de comunicacions, sensors remots, determinació gravimètrica i magnetomètrica, altimetria oceànica, determinació atmosfèrica i en operacions de Search and Rescue (Cerca i rescat). El seu posicionamen

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11

Tao, Zui. "Autonomous road vehicles localization using satellites, lane markings and vision." Thesis, Compiègne, 2016. http://www.theses.fr/2016COMP2261/document.

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L'estimation de la pose (position et l'attitude) en temps réel est une fonction clé pour les véhicules autonomes routiers. Cette thèse vise à étudier des systèmes de localisation pour ces véhicules en utilisant des capteurs automobiles à faible coût. Trois types de capteurs sont considérés : des capteurs à l'estime qui existent déjà dans les automobiles modernes, des récepteurs GNSS mono-fréquence avec antenne patch et une caméra de détection de la voie regardant vers l’avant. Les cartes très précises sont également des composants clés pour la navigation des véhicules autonomes. Dans ce travai

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12

Mignot, Shan. "Towards a demonstrator for autonomous object detection on board Gaia." Observatoire de Paris (1667-....), 2008. https://theses.hal.science/tel-00340279v2.

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La mission pierre angulaire de l'ESA, Gaia, doit bâtir un catalogue d'étoiles limité seulement par leurs magnitudes. Ce milliard d'objets doivent être détectés à bord en temps réel pour pouvoir être observés et les exigences scientifiques et techniques font de ce problème un défi d'ingénierie. Nous avons élaboré un prototype pour estimer les performances accessibles et servir au dimensionnement de l'électronique à bord (TDA PDHE). Il s'appuie sur une séquence de quatre tâches: la calibration des données issues des CCDs, l'estimation du fond de ciel, l'identification des objets et, enfin, leur

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Porter, Robert D. "Development and control of the Naval Postgraduate School Planar Autonomous Docking Simulator (NPADS) /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02sep%5FPorter.pdf.

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Thesis (M.S. in Astronautical Engineering)--Naval Postgraduate School, September 2002.<br>Thesis advisor(s): Michael G. Spencer, Brij N. Agrawal. Includes bibliographical references (p. 83). Also available online.

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14

McConnell, Joshua B. (Joshua Bryan) 1974. "Technical and policy issues surrounding the use of autonomous maneuverable earth observing satellites." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/82781.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics; and, (S.M.)--Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program, 2003.<br>Includes bibliographical references (leaves 237-240).<br>by Joshua B. McConnell.<br>S.M.

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15

Bayoudh, Mehdi. "Active Diagnosis of Hybrid Systems Guided by Diagnosability Properties - Application to Autonomous Satellites." Thesis, Toulouse, INPT, 2009. http://www.theses.fr/2009INPT069H.

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Motivée par les besoins du domaine spatial en termes de diagnostic embarqué et d’autonomie, cette thèse s’intéresse aux problèmes de diagnostic, de diagnosticabilité et de diagnostic actif des systèmes hybrides. Un formalisme hybride est proposé pour représenter les deux dynamiques, continues et discrètes, du système. En s’appuyant sur ce modèle, une approche de diagnostic passif est proposée en mariant les techniques des systèmes à événements discrets et des systèmes continus. Un cadre formel pour la diagnosticabilité des systèmes hybrides a également été établi proposant des définitions et d

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Mienie, Dewald. "Autonomous docking for a satellite pair using monocular vision." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2382.

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Thesis (MEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2009.<br>Autonomous rendezvouz and docking is seen as an enabling technology. It allows, among others, the construction of larger space platforms in-orbit and also provides a means for the in-orbit servicing of space vehicles. In this thesis a docking sequence is proposed and tested in both simulation and practice. This therefore also requires the design and construction of a test platform. A model hovercraft is used to emulate the chaser satellite in a 2-dimensional plane as it moves relatively frictionles

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Serdar, Saliha. "Design of an Autonomous Decision Support System for High-Level Planning in Nano Satellites Using Logic Programming." Thesis, Luleå tekniska universitet, Institutionen för system- och rymdteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-61239.

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18

Abedini, A., J. Moriarta, D. Biroscak, L. Losik, and R. F. Malina. "A Low-Cost, Autonomous, Ground Station Operations Concept and Network Design for EUVE and Other Earth-Orbiting Satellites." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/608538.

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International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada<br>The Extreme Ultraviolet Explorer (EUVE) satellite was designed to operate with the Tracking and Data Relay Satellite System (TDRSS) and Deep Space Network (DSN). NASA, the Jet Propulsion Laboratory and the Center for EUV Astrophysics have been evaluating a commercially available ground station already used for NASA's Low Earth Orbit (LEO) weather satellites. This ground station will be used in a network of unattended, autonomous ground stations for telemetry reception, pr

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Cristini, Frédéric. "Amélioration de la résilience de systèmes spatiaux soumis à des menaces : vers des réseaux de satellites autonomes." Thesis, Toulouse, ISAE, 2014. http://www.theses.fr/2014ESAE0025/document.

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Un environnement spatial naturel hostile, les systèmes spatiaux de télédétection traditionnels,monolithiques et téléopérés depuis le sol, demeurent vulnérables face à un nombre croissant de menaces émergentes issues de l’environnement spatial artificiel (armes antisatellites,débris). Plutôt que de chercher à protéger physiquement les satellites, nous proposons d’adopter une stratégie fondée sur le concept de résilience, qui traduit la capacité d’un système à poursuivre sa mission face à des aléas imprévisibles, fût-ce en mode dégradé. En nous appuyant sur de récentes innovations dans les techn

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20

Browne, Daniel C. "Enabling collaborative behaviors among cubesats." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41223.

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Future spacecraft missions are trending towards the use of distributed systems or fractionated spacecraft. Initiatives such as DARPA's System F6 are encouraging the satellite community to explore the realm of collaborative spacecraft teams in order to achieve lower cost, lower risk, and greater data value over the conventional monoliths in LEO today. Extensive research has been and is being conducted indicating the advantages of distributed spacecraft systems in terms of both capability and cost. Enabling collaborative behaviors among teams or formations of pico-satellites requires technology

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Anderson, Mike, Peter Militch, and Hugh Pickens. "AN AUTONOMOUS SATELLITE TRACKING STATION." International Foundation for Telemetering, 1999. http://hdl.handle.net/10150/607307.

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International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>In 1998, AlliedSignal Technical Services (ATSC) installed three fully autonomous 13-meter satellite tracking systems for the Integrated Program Office of the National Oceanic and Atmospheric Administration (NOAA) at the Command and Data Acquisition Station near Fairbanks, Alaska. These systems track and command NOAA Polar Orbiting Weather Satellites and Defense Meteorological Satellites. Each tracking system operates for extended periods of time with little in

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Sauer, Birgit M. (Birgit Maria) 1971. "Autonomous mission scheduling for satellite operations." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/49978.

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Kaiser, Julius A., and Fredrick W. Herold. "AUTONOMOUS GROUND STATION FOR SATELLITE COMMUNICATIONS." International Foundation for Telemetering, 1999. http://hdl.handle.net/10150/607306.

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International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>Employment of the retro-directive technique described in Reference 1 describes a totally Autonomous Ground Station providing hemispheric coverage and continuous tracking. This System establishes communications between the satellite and ground station without human intervention or moving parts. When a satellite is in view, the ground station beacon antenna, using CDMA, enables the desired satellite transmitter and directs its beam to the ground station. The gr

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Araguz, López Carles. "In pursuit of autonomous distributed satellite systems." Doctoral thesis, Universitat Politècnica de Catalunya, 2019. http://hdl.handle.net/10803/668234.

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Satellite imagery has become an essential resource for environmental, humanitarian, and industrial endeavours. As a means to satisfy the requirements of new applications and user needs, novel Earth Observation (EO) systems are exploring the suitability of Distributed Satellite Systems (DSS) in which multiple observation assets concurrently sense the Earth. Given the temporal and spatial resolution requirements of EO products, DSS are often envisioned as large-scale systems with multiple sensing capabilities operating in a networked manner. Enabled by the consolidation of small satellite platfo

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Eckert, M., C. Smith, F. Kronberg, et al. "EUVE Telemetry Processing and Filtering for Autonomous Satellite Instrument Monitoring." International Foundation for Telemetering, 1996. http://hdl.handle.net/10150/611477.

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International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California<br>A strategy for addressing the complexity of problem identification and notification by autonomous telemetry monitoring software is discussed. The Extreme Ultraviolet Explorer (EUVE) satellite's science operations center (ESOC) is completing a transition to autonomous operations. Originally staffed by two people, twenty-four hours every day, the ESOC is nearing the end of a phased transition to unstaffed monitoring of the science payload health. To dev

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Tripp, Howard J. A. "Stigmergy for autonomous distributed coordination of satellite clusters." Thesis, University of Surrey, 2009. http://epubs.surrey.ac.uk/771933/.

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Multi-platform swarm/cluster missions are an attractive prospect for improved science return as they provide a natural capability for temporal, spatial and signal separation with further engineering and economic advantages. As spacecraft numbers increase and/or the round-trip communications delay from Earth lengthens, the traditional "remotely-controlled" approach begins to break down. It is therefore essential to push the management of the spacecraft into the space segment. In other words, to make spacecraft more autonomous - if the desired goal of missions involving satellite swarms is to be

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Turner, Tim. "Autonomous Control and Data Acquisition for Advanced Satellite Systems." International Foundation for Telemetering, 1985. http://hdl.handle.net/10150/615595.

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International Telemetering Conference Proceedings / October 28-31, 1985 / Riviera Hotel, Las Vegas, Nevada<br>Autonomous operation is rapidly becoming a requirement for most new spacecraft systems. An autonomous spacecraft greatly simplifies the ground station processing and monitoring requirements, freeing ground station capabilities for other important tasks. The T2C2 (Telemetry, Timing, Command and Control) System has been conceived and architected to facilitate spacecraft autonomy. The T2C2 architecture is ideally suited for onboard closed-loop control, redundancy management, housekeeping

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Raveneau, Patrice. "Satellites d'observation et réseaux de capteurs autonomes au service de l'environnement." Phd thesis, Toulouse, INPT, 2014. http://oatao.univ-toulouse.fr/11965/1/raveneau.pdf.

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La collecte d’informations et leur transmission au travers d’un réseau de communications peut être effectuée par des réseaux de capteurs autonomes ainsi que par des satellites d’observation. L’utilisation conjointe de ces réseaux fournirait des données complémentaires et permettrait à l’Humanité de pérenniser son avenir en comprenant les mécanismes du monde qui l’entoure. Ces dernières années, le secteur spatial a montré une volonté d’unifier et de faciliter la réutilisation des développements réalisés avec la création de filières de plateformes multi-missions ainsi que la définition de protoc

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Rivera, Pablo Abraham. "Development of an autonomous rover for the Nevada student satellite program." abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1446452.

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Diaz, Jorge Enrique Espíndola. "An autonomous and dynamical approach to small satellite ground stations networks." Instituto Nacional de Pesquisas Espaciais (INPE), 2017. http://urlib.net/sid.inpe.br/mtc-m21b/2017/07.04.19.59.

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The costs in satellite operations are generally not negligible, especially for longterm missions. An alternative to lower costs is to increase the level of automation in procedures whenever possible. This thesis proposes a dynamic and autonomous approach to small satellite ground station networks aimed at minimizing these operational costs. The proposed solution is called the ADSGS (Autonomous and Dynamic System Ground Station) and is a middleware with hardware and software components to operate in a distributed network environment of ground stations. In this work the SATNet network was consid

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Lange, Connor. "A GENERIC DECISION MAKING FRAMEWORK FOR AUTONOMOUS SYSTEMS." DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/992.

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With the rising popularity of small satellites, such as CubeSats, many smaller institutions previously incapable of developing and deploying a spacecraft have starting to do so. Institutions with a history of space flight, such as NASA JPL, have begun to put projects on CubeSats that would normally fly on much larger satellites. As a result, the institutions with space flight heritage have begun to port spacecraft software that was previously designed for much larger and more complex satellites to the CubeSat platform. Unfortunately for universities, who are the majority of all institutions de

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Stroozas, B. A., D. Biroscak, M. Eckert, et al. "The NASA EUVE Satellite in Transition: From Staffed to Autonomous Science Payload Operations." International Foundation for Telemetering, 1996. http://hdl.handle.net/10150/611421.

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International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California<br>The science payload for NASA's Extreme Ultraviolet Explorer (EUVE) satellite is controlled from the EUVE Science Operations Center (ESOC) at the Center for EUV Astrophysics (CEA), University of California, Berkeley (UCB). The ESOC is in the process of a transition from a single staffed shift to an autonomous, zero-shift, "lights out" science payload operations scenario (a.k.a., 1:0). The purpose of the 1:0 transition is to automate all of the remainin

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Schultz, Christopher R. "An Autonomous Underwater Vehicle for Validating Internal Actuator Control Strategies." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/33190.

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There are benefits to the use of internal actuators for rotational maneuvers of small-scale underwater vehicles. Internal actuators are protected from the outside environment by the external pressure hull and will not disturb the surrounding environment during inspection tasks. Additionally, internal actuators do not rely on the relative fluid motion to exert control moments, therefore they are useful at low speed and in hover. This paper describes the design, fabrication and testing of one such autonomously controlled, internally actuated underwater vehicle. <p> The Internally Actuated, Mo

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Grubinger, Michael, and Felix Strohmeier. "AUTONOMOUS ACQUISITION OF ENVIRONMENTAL DATA IN A GLOBAL NETWORK ENVIRONMENT." International Foundation for Telemetering, 2001. http://hdl.handle.net/10150/607597.

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International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>This paper presents the results of a feasibility study undertaken by the University of Salzburg (Austria), investigating the autonomous acquisition of environmental data in a global network. A suggested application which is used as the basis of this paper is a volcano monitoring system which would be able to track the activity of a volcano and act as a disaster warning system. The background Volcano observation data required for such a system is covered, before di

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Ortolano, Nicholas G. "Autonomous Trajectory Planning for Satellite RPO and Safety of Flight Using Convex Optimization." DigitalCommons@USU, 2018. https://digitalcommons.usu.edu/etd/7291.

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Optimal trajectory planning methods that implement convex optimization techniques are applied to the area of satellite rendezvous and proximity operations. This involves the development of linearized relative orbital motion dynamics and constraints for two satellites, where one maintains a near-circular reference orbit. The result is formulated as a convex optimization problem, where the objective is to minimize the amount of fuel required to transfer from a given initial condition to the desired final conditions. A traditional rendezvous and proximity operations scenario is analyzed, which in

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Hultberg, Johanna. "Dehazing of Satellite Images." Thesis, Linköpings universitet, Datorseende, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-148044.

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The aim of this work is to find a method for removing haze from satellite imagery. This is done by taking two algorithms developed for images taken from the sur- face of the earth and adapting them for satellite images. The two algorithms are Single Image Haze Removal Using Dark Channel Prior by He et al. and Color Im- age Dehazing Using the Near-Infrared by Schaul et al. Both algorithms, altered to fit satellite images, plus the combination are applied on four sets of satellite images. The results are compared with each other and the unaltered images. The evaluation is both qualitative, i.e.

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Steindorf, Lukas. "Constrained Low-Thrust Satellite Formation-Flying Using Relative Orbit Elements : Autonomous Guidance and Control for the NetSat Satellite Formation-Flying Mission." Thesis, Luleå tekniska universitet, Institutionen för system- och rymdteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-61599.

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This thesis proposes a continuous low-thrust guidance and control strategy for satellite formation-flying. Stabilizing feedback based on mean relative orbit elements and Lyapunov theory is used. A novel feedback gain matrix inspired by the fuel-optimal impulsive solution is designed to achieve near-optimal fuel consumption. A reference governor is developed to autonomously guide the spacecraft through the relative state-space in order to allow for arbitrarily constrained satellite formations. Constraints include desired thrust levels, time constraints, passive collision avoidance and locally

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Simard, Bilodeau Vincent. "Lois de commande prédictives autonomes pour vol en formation de satellites terrestres." Mémoire, Université de Sherbrooke, 2008. http://savoirs.usherbrooke.ca/handle/11143/1469.

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Les technologies spatiales évoluent actuellement vers la fabrication de plusieurs microsatellites autonomes volant en formation plutôt que vers la construction de gros satellites. Cette stratégie est avantageuse. Par exemple, elle permet d'accroître la résolution des mesures en corrélant les signaux provenant des instruments scientifiques des microsatellites. Cette antenne synthétique de grande ouverture serait impossible à déployer avec un seul satellite. Pour profiter des avantages de cette stratégie, des lois de commande optimales (a au sens du temps et du coût en propergol) et autonome qui

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Gasslander, Maja. "Segmentation of Clouds in Satellite Images." Thesis, Linköpings universitet, Datorseende, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-128802.

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The usage of 3D modelling is increasing fast, both for civilian and military areas, such as navigation, targeting and urban planning. When creating a 3D model from satellite images, clouds canbe problematic. Thus, automatic detection ofclouds inthe imagesis ofgreat use. This master thesis was carried out at Vricon, who produces 3D models of the earth from satellite images.This thesis aimed to investigate if Support Vector Machines could classify pixels into cloud or non-cloud, with a combination of texture and color as features. To solve the stated goal, the task was divided into several subpr

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Bénazéra, Emmanuel. "Diagnostic et reconfiguration basés sur des modèles hybrides concurrents : application aux satellites autonomes." Toulouse 3, 2003. http://www.theses.fr/2003TOU30105.

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Wojtulewicz, Karol, and Viktor Agbrink. "Evaluating DCNN architecturesfor multinomial area classicationusing satellite data." Thesis, Linköpings universitet, Artificiell intelligens och integrerade datorsystem, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-168805.

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The most common approach to analysing satellite imagery is building or object segmentation,which expects an algorithm to find and segment objects with specific boundaries thatare present in the satellite imagery. The company Vricon takes satellite imagery analysisfurther with the goal of reproducing the entire world into a 3D mesh. This 3D reconstructionis performed by a set of complex algorithms excelling in different object reconstructionswhich need sufficient labeling in the original 2D satellite imagery to ensure validtransformations. Vricon believes that the labeling of areas can be used

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Nolet, Simon 1975. "Development of a guidance, navigation and control architecture and validation process enabling autonomous docking to a tumbling satellite." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/39697.

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Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2007.<br>Includes bibliographical references (p. 307-324).<br>The capability to routinely perform autonomous docking is a key enabling technology for future space exploration, as well as assembly and servicing missions for spacecraft and commercial satellites. Particularly, in more challenging situations where the target spacecraft or satellite is tumbling, algorithms and strategies must be implemented to ensure the safety of both docking entities in the event of anomalies. However, difficulties enco

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Norris, Natasha Louise. "Implementation of Multi-Constellation Baseline Fault Detection and Exclusion Algorithm Utilizing GPS and GLONASS Signals." Ohio University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1535028817622931.

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Torén, Rickard. "Comparing CNN methods for detection and tracking of ships in satellite images." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-167163.

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Knowing where ships are located is a key factor to support safe maritime transports, harbor management as well as preventing accidents and illegal activities at sea. Present international solutions for geopositioning in the maritime domain exist such as the Automatic Identification System (AIS). However, AIS requires the ships to constantly transmit their location. Real time imaginary based on geostationary satellites has recently been proposed to complement the existing AIS system making locating and tracking more robust. This thesis investigated and compared two machine learning image analys

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Kronberg, F., P. Ringrose, L. Losik, D. Biroscak, and R. F. Malina. "RE-ENGINEERING THE EUVE PAYLOAD OPERATIONS INFORMATION FLOW PROCESS TO SUPPORT AUTONOMOUS MONITORING OF PAYLOAD TELEMETRY." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/608529.

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International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada<br>The UC Berkeley Extreme Ultraviolet Explorer (EUVE) Science Operations Center (ESOC) is developing and implementing knowledge-based software to automate the monitoring of satellite payload telemetry. Formerly, EUVE science payload data were received, archived, interpreted, and responded to during round-the-clock monitoring by human operators. Now, knowledge-based software will support, augment, and supplement human intervention. In response to and as a result of this re-e

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Loizou, John. "An assessment of the autonomous integrity monitoring performance of a combined GPS/Galileo Satellite Navigation System, and its impact on the case for the development of Galileo." Thesis, Cranfield University, 2004. http://hdl.handle.net/1826/1604.

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In 1999 Europe, through the European Commission and the European Space Agency, began detailed definition of a second generation Global Navigation Satellite System (GNSS). This GNSS development programme, known as “Galileo”, was intended to both complement and compete against the existing US Global Positioning System (GPS). Unlike GPS, Galileo is intended to be privately financed, following the initial development investment from the EC and ESA, which implies that Galileo should provide some revenue-earning services. From its earliest inception, the basis of these services has been assumed to b

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Casadei, Alessandro. "An optical navigation filter simulator for a CubeSat mission to Didymos binary asteroid system." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/17998/.

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AIDA (Asteroid Impact and Deflection Assessment), is a joint NASA-ESA mission that will operate within 65803 Didymos binary system and whose main purpose is to experiment and investigate the kinetic impact technique for the deviation of the asteroid trajectories in space. HERA, the "mother" satellite designed by ESA, will aim to collect data about the chemical-physical composition of the binary system and about the characteristics of the impact between DART, the bullet-satellite realized and run by NASA, and the minor of the two celestial bodies that compose Didymos, which should occur around

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Li, Franck. "Lane-level vehicle localization with integrity monitoring for data aggregation." Thesis, Compiègne, 2018. http://www.theses.fr/2018COMP2458/document.

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Les informations contenues dans les cartes routières numériques revêtent une importance grandissante dans le domaine des véhicules intelligents. La prise en compte d’environnements de plus en plus complexes a augmenté le niveau de précision exigé des informations cartographiques. Les cartes routières numériques, considérées ici comme des bases de données géographiques, contiennent des informations contextuelles sur le réseau routier, facilitant la compréhension correcte de l’environnement. En les combinant avec les données provenant des capteurs embarqués, une représentation plus ﬁne de l’envi

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"Improvements in autonomous GPS navigation of Low Earth Orbit satellites." Universitat Politècnica de Catalunya, 2008. http://www.tesisenxarxa.net/TDX-0312109-123420/.

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Ibrahim, Najmus. "Attitude and Orbit Control of Small Satellites for Autonomous Terrestrial Target Tracking." Thesis, 2013. http://hdl.handle.net/1807/42965.

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Terrestrial target tracking using low Earth orbit satellites provides essential daily services and vital scientific data. In this thesis, the Attitude and Orbit Control System of such a terrestrial tracking satellite, Nanosatellite for Earth Monitoring and Observation Aerosol Monitor, is presented in detail. The satellite is a new generation Earth observation mission with the objective of detecting global atmospheric aerosol content through sub-degree pointing. The design is presented from initial hardware selection and budget development to operation definition and mission operation. The effi

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