Дисертації з теми "Astrodynamics and space situational awareness"
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Nastasi, Kevin Michael. "Autonomous and Responsive Surveillance Network Management for Adaptive Space Situational Awareness." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/84931.
Повний текст джерелаPh. D.
Gast, David W. "LIDAR design for space situational awareness." Thesis, Monterey, Calif. : Naval Postgraduate School, 2008. http://edocs.nps.edu/npspubs/scholarly/theses/2008/Sept/08Sep%5FGast.pdf.
Повний текст джерелаThesis Advisor(s): Agrawal, Brij N. ; Boger, Dan C. "September 2008." Description based on title screen as viewed on November 3, 2008. Includes bibliographical references (p. 79-80). Also available in print.
O'Brien, Tolulope E. "Space situational awareness CubeSat concept of operations." Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/10664.
Повний текст джерелаGondelach, David J. "Orbit prediction and analysis for space situational awareness." Thesis, University of Surrey, 2019. http://epubs.surrey.ac.uk/850116/.
Повний текст джерелаAlinder, Simon. "Space Situational Awareness with the Swedish Allsky Meteor Network." Thesis, Uppsala universitet, Observationell astrofysik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-390397.
Повний текст джерелаDetta examensarbete undersöker möjligheterna att använda ett svenskt nätverk av allskykameror kallat SAMN (Swedish Allsky Meteor Network) för att observera, identifiera och banbestämma satelliter. Det övergripande målet med detta projekt är att bestämma hur användbart ett sådant nätverk skulle vara för att skapa en rymdlägesbild, vilken i sin tur kräver bevakning och identifikation av objekt som ligger i omloppsbana. Detta examensarbete är ett samarbete mellan Uppsala Universitet och FOI (Totalförsvarets Forskningsinstitut). Inom ramen för detta projekt har författaren utvecklat mjukvara som kan ta data från observationer av objekt utförda av SAMN och göra initiala banbestämningar av objekten. En algoritm som förbättrar resultaten av den initiala banbestämningen utvecklades och integrerades i programmen. Programmen kan också identifiera satelliter om de finns med i en databas som programmet har tillgång till eller förutsäga objektets nästa passage över observatören om det inte kunde identifieras. Ett annat program som analyserar känsligheten av resultaten av den initiala banbestämningen utvecklades också. Detta program mäter spridningen i resultat som orsakas av små störningar i de observerade koordinaterna på himlen. Det framkom att stabiliteten av resultaten kan förbättras avsevärt genom att använda flera observatörer på olika orter. I detta projekt användes Gauss metod för att göra banbestämningarna. Metodens för- och nackdelar diskuteras och i slutänden rekommenderas istället andra metoder, som Goodings metod eller Dubbel R-iteration, för framtida arbeten. Detta beror mest på att Gauss metod innehåller en singularitet när alla siktlinjer från observatören till objektet ligger i samma plan som varandra vilket gör resultaten opålitliga i de fallen. Programmen testkördes på ett antal olika observationer, både artificiella och verkliga, och resultaten jämfördes med kända positioner. Slutsatsen av arbetet är att de undersökta teknikerna kan, med vissa modifikationer, användas för att göra initiala banbestämningar och satellitidentifikationer, men att göra de väldigt precisa positionsbestämningarna som krävs för fullständig banbestämning är inte genomförbart.
Flanagan, Jason A. "Enhancing space situational awareness using a 3U CubeSat with optical imager." Thesis, Monterey, California. Naval Postgraduate School, 2010. http://hdl.handle.net/10945/5001.
Повний текст джерелаSpace situational awareness is extremely important in order to maintain the safety and usability of earth-orbiting satellites, as well as protecting astronauts living and working in space. Traditional space situational awareness is achieved using ground-based radar and optical sensors. This thesis explores the feasibility of space-based space situational awareness using a 3U CubeSat with an optical imager to augment the Space Surveillance Network by capturing conjunctions in space, from which ephemeris data of earth orbiting objects can be updated to more accurately predict future orbital positions. Work completed includes preliminary work towards building, testing, and using a Colony II Bus emulator and interface mechanism, allowing smooth payload and bus integration. Analysis of orbital trajectories for a reference orbit and potential crossing satellites provides insight into the capabilities of the SSA CubeSat. Future work is discussed.
Zaman, Farakh B. "Building a local Space Situational Awareness (SSA) architecture using hosted payloads." Thesis, Monterey California. Naval Postgraduate School, 2013. http://hdl.handle.net/10945/37749.
Повний текст джерелаFrom a military standpoint, space-based capabilities and the need to know what is happening in space, or Space Situational Awareness (SSA), have become invaluable. Current SSA capabilities are expensive and are limited in scope. Hosted payloads however, provide a unique method to provide SSA in a relatively inexpensive manner. This thesis explores the development of an architecture for SSA using hosted payloads. For this thesis, research was conducted on existing systems. NASA and Air Force programs were reviewed to gain an understanding of hosted payloads, and a set of generic high-level requirements were developed for a hosted payload. These requirements will meet the needs of a hosted SSA payload that can enable a larger SSA architecture using hosted payloads. Once the requirements were developed, modeling and simulation using Satellite Tool Kit (STK) was were employed to develop an optimal SSA system using hosted payloads. Finally, once the architecture was defined, an Operational View 1 (OV-1) was developed to provide a graphical representation of the architecture.
Persico, Adriano Rosario. "Advanced signal processing tools for ballistic missile defence and space situational awareness." Thesis, University of Strathclyde, 2018. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=30190.
Повний текст джерелаOhriner, Ethan Benjamin Lewis. "Investigation of Orbital Debris Situational Awareness with Constellation Design and Evaluation." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/102096.
Повний текст джерелаMaster of Science
Orbital debris is defined as all non-operational, man-made objects currently in space. US national space regulations require every new satellite to have a de-orbit plan to prevent the creation of new debris, but fails to address the thousands of derelict objects currently hindering space operations. As space traffic increases, so does the economic impact of orbital debris on the sustainability of systems that increasingly support national security and commercial growth. While orbital debris is usually assessed by looking at the full volume of space, most massive debris objects are concentrated in high-density clusters with a higher than normal probability for collision. A potential solution to the growing orbital debris problem is to place a group of observation satellites within these debris clusters to both improve monitoring capabilities and provide a means for preventing potential collisions by engaging with debris via Laser Debris Removal (LDR). This research presents a methodology for comparing and contrasting different observer satellite constellation designs. Our results show that increasingly complex orbit designs improve various performance criteria, but ultimately orbits that more closely match those of the debris objects provide the best coverage. The proposed method of observation and engagement could significantly reduce the threat orbital debris poses to space operations and economic growth.
Sease, Bradley Jason. "Data Reduction for Diverse Optical Observers through Fundamental Dynamic and Geometric Analysis." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/70923.
Повний текст джерелаPh. D.
Bengtsson, Bernander Karl. "A Method for Detecting Resident Space Objects and Orbit Determination Based on Star Trackers and Image Analysis." Thesis, Uppsala universitet, Avdelningen för visuell information och interaktion, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-236873.
Повний текст джерелаSchwomeyer, Patrick. "The U.S. outer space situational awareness sharing law: sharing information about SSA and the need for global cooperation." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=104897.
Повний текст джерелаLe monde réalise rapidement l'importance de la conscience en situation spatiale (SSA) puisqu'elle permet le maintien de la sécurité des Etats actifs en matière spatiale. Dans le but d'atteindre l'environnement le plus sécuritaire possible, le partage de l'information reste critique. En effet, sans partage de données SSA, nations et organisations sont incapables de posséder la connaissance absolue de l'espace et de tous les objets spatiaux en orbite qui s'y trouvent. Le partage de données SSA est abordé ici en trois parties. Tout d'abord, il s'agit d'explorer le contexte technique décrivant l'environnement de l'espace, de la mécanique orbitale, capteurs SSA et données SSA. Cette étude permet d'établir de solides bases pour apprécier pleinement les avancées juridiques nécessaires afin d'atteindre une plus grande coopération internationale. Ensuite, il s'agira d'analyser dans la Section III le système legislative ainsi que les politiques et les acteurs à la collecte de SSA et sa diffusion au sein des États-Unis. Cette dernière étude se fera par examen des 10 U.S.C. § 2274. La dernière partie, Section IV, va élargir l'enquête afin d'inclure d'autres acteurs, et ce, à échelle mondiale, incluant gouvernements étrangers, entreprises privées, astronomes, ainsi que plusieurs modèles de gouvernance susceptibles de constituer un corps de gouvernance potentiels gérant le partage des données internationales d‘un réseau SSA.
Mukundan, Arvind. "Combined Heuristic and Statistical Methodologies applied to Maneuver Detection in the SST Observation Correlation Process." Thesis, Luleå tekniska universitet, Rymdteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-81971.
Повний текст джерелаAsk, Jacob. "Selected Trends and Space Technologies Expected to Shape the Next Decade of SSC Services." Thesis, KTH, Rymdteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-261779.
Повний текст джерелаSedan början av 2000-talet har det skett markanta förändringar inom rymdindustrin, såsom utvecklingen av återanvändningsbara raketer och en ökad mängd kommersiella möjligheter. Denna nya rymder a karaktäriseras av ett dynamiskt klimat för entreprenörer, minskande barriärer för att etablera rymdverksamhet och uppkomsten av nya marknader. Nya affärsmodeller utvecklas och integrering mellan rymden och andra industrier fortsätter, vilket ger utrymme för utveckling av innovativa och disruptiva idéer. Redan etablerade företag anpassar sig till förändringarna på olika sätt och ansträngningar för att bibehålla relevans prioriteras. Utvecklingstakten inom branschen var tidigare dominerad av statliga program men är nu alltmer influerad av privata och kommersiella satsningar. Att relatera till ny teknik, nuvarande trender och drivkrafter inom rymdindustrin är Jacob Ask is pursuing a Master of Science degree in Aerospace Engineering at KTH Royal Institute of Technology in Stockholm, Sweden. Christer Fuglesang is a professor in Space Travel, director of KTH Space Center and responsible for the Aerospace Engineering master program. He serves as the examiner for this master thesis project. Linda Lyckman is the Head of Business & Technology Innovation at SSC and supervisor for this master thesis project. komplext. Genom att undersöka och analysera identifierade trender och teknologier ämnar författaren urskilja de som kan komma att påverka industrin i störst utsträckning under det kommande decenniet. Bedömningar av marknadsmöjligheter och intervjuer har genomförts och i denna rapport presenteras ¨aven diskussioner och slutsatser relaterade till den typ av tjänster som Swedish Space Corporation erbjuder. Denna rapport har för avsikt att uppdatera läsaren om delar av den aktuella nulägesanalysen inom rymdindustrin, introducera koncept och ge relevanta kommentarer om viktiga trender.
(9178595), Smriti Nandan Paul. "Orbital Perturbations for Space Situational Awareness." Thesis, 2020.
Знайти повний текст джерелаBecause of the increasing population of space objects, there is an increasing necessity to monitor and predict the status of the near-Earth space environment, especially of critical regions like geosynchronous Earth orbit (GEO) and low Earth orbit (LEO) regions, for a sustainable future. Space Situational Awareness (SSA), however, is a challenging task because of the requirement for dynamically insightful fast orbit propagation models, presence of dynamical uncertainties, and limitations in sensor resources. Since initial parameters are often not known exactly and since many SSA applications require long-term orbit propagation, long-term effects of the initial uncertainties on orbital evolution are examined in this work. To get a long-term perspective in a fast and efficient manner, this work uses analytical propagation techniques. Existing analytical theories for orbital perturbations are investigated, and modifications are made to them to improve accuracy. While conservative perturbation forces are often studied, of particular interest here is the orbital perturbation due to non-conservative forces. Using the previous findings and the developments in this thesis, two SSA applications are investigated in this work. In the first SSA application, a sensor tasking algorithm is designed for the detection of new classes of GEO space objects. In the second application, the categorization of near-GEO objects is carried out by combining knowledge of orbit dynamics with machine learning techniques.
(6372689), Bryan David Little. "Optical Sensor Tasking Optimization for Space Situational Awareness." Thesis, 2019.
Знайти повний текст джерела(9750503), Michael James Rose. "Optical Sensor Uncertainties and Variable Repositioning Times in the Single and Multi-Sensor Tasking Problem." Thesis, 2020.
Знайти повний текст джерела(8766717), Alex M. Friedman. "Observability Analysis for Space Situational Awareness." Thesis, 2020.
Знайти повний текст джерелаDeMars, Kyle Jordan. "Nonlinear orbit uncertainty prediction and rectification for space situational awareness." Thesis, 2010. http://hdl.handle.net/2152/ETD-UT-2010-12-2596.
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Biria, Ashley Darius. "Analytical approach to the design of optimal satellite constellations for space-based space situational awareness applications." Thesis, 2011. http://hdl.handle.net/2152/ETD-UT-2011-12-4941.
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Gupta, Mini. "Analysis of the Representation of Orbital Errors and Improvement of their Modelling." Thesis, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-71535.
Повний текст джерелаTakano, Andrew Takeshi. "Numerical analysis and design of satellite constellations for above the horizon coverage." Thesis, 2010. http://hdl.handle.net/2152/ETD-UT-2010-12-2594.
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(8817071), Patrick Michael Kelly. "Optical Astrometry and Orbit Determination." Thesis, 2020.
Знайти повний текст джерела(8694222), Daigo Kobayashi. "Exploration of Compressed Sensing for Satellite Characterization." Thesis, 2020.
Знайти повний текст джерелаOttesen, David Ryan. "The dynamics of deployment and observation of a rigid body spacecraft system in the linear and non-linear two-body problem." 2012. http://hdl.handle.net/2152/19685.
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(8918840), Christopher Y. Jang. "Modeling and Detecting Orbit Observation Errors Using Statistical Methods." Thesis, 2020.
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