Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 254 for “"constellations"”.
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Constellations and anti-corridors
… on the other hand, is non-linear and permits constellations to emerge: many stars can be perceived at once and the imagination can link them into any desired figure. The space of corridors is linear: rooms are perceived and passed in a fixed sequence of one space following another. The space …
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Automated station-keeping for satellite constellations
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1997.
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Medium Access Control Protocol for Satellite Constellations
Satellite internet constellations have emerged as a promising solution for providing global internet connectivity, especially in regions underserved by terrestrial infrastructure. However, as user demand increases, especially in densely populated urban areas, existing Medium Access Control (MAC) …
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Reconfigurable Satellite Constellations for Mobile Target Tracking
… to traditional Earth-observing satellite constellations. In the ReCon concept of operations, the constellation is nominally positioned to obtain global coverage. If an event of interest occurs at a particular latitude and longitude location, satellites can be maneuvered to obtain more …
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Domesticating the ghost : constellations of Mexico, 1968
Organized primarily as an essayistic method of investigation to accompany and supplement my thirty-minute short film AT THE TOP OF GRASSHOPPER'S HILL, this thesis traces minor encounters or discrepant engagements¹ between myself and and images of the 1968 state-sponsored student massacre in Mexico …
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LOW-THRUST CONTROLLER FOR SLOT-BASED SATELLITE CONSTELLATIONS
Due to the increase in popularity of satellite constellations, some altitudes in LEO have experienced a large increase in number of satellites. This is a trend expected to continue in the future, which could potentially lead to an increased risk of collision between satellites. Collision avoidance …
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Optimizing resource allocation in large communications satellite constellations
… (such as SpaceX and Amazon) have proposed constellations able to serve hundreds of thousands of users, using thousands of satellites. While the orbital configuration of each design is different, the next generation of satellite communications relies on highly flexible digital payloads, such …
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Cost optimization and routing for satellite network constellations
… of uniform traffic present. Modifications of the constellations, such as the 3-crosslink-per-node mesh network, and the 1-inter-plane-crosslink mesh network, are introduced in an attempt to further reduce the cost of the system. Interaction of hotspot traffic with uniform traffic in a square mesh …
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Onboard distributed replanning for crosslinked small satellite constellations
This work implements distributed onboard planning and scheduling approach for crosslinked small satellites Earth observation missions. The example cases used involve 65 small satellites in ISS and Sun Synchronous Orbits, as well as NASA's Near Earth Network groundstations, and three target cases. …
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Transient Constellations: Adorno, Benjamin, and the Actuality of Idealism
This dissertation examines the thought of Theodor W. Adorno and Walter Benjamin in critical constellation with German Idealism, specifically G.W.F. Hegel and F.W.J. Schelling. I explore how Adorno and Benjamin deconstruct and refashion Idealist notions, while also providing the post-Idealist …
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Women with a history of incest : MMPI profile constellations
The current study assessed the effects of incest utilizing the Minnesota Multiphasic Personality Inventory (MMPI), an objective measure that can address such long term effects as low self esteem, isolation, depression, anxiety, suicidality, substance abuse, impaired sexual adjustment, psychosomatic …
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Urban constellations: reading contemporary cityscapes with Benjamin and Baudrillard
This thesis seeks to contribute to the literature on Walter Benjamin and Jean Baudrillard, but not to merely retread old debates. It is concerned instead with a re-evaluation of the work of both thinkers in a particular context: the experience of the new cultural spaces, of twenty-first century …
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Debris collision avoidance maneuver optimization (CAMO) for satellite constellations
… sustainability of current and future satellite constellations. Traditional collision avoidance strategies, which typically rely on single-impulse maneuvers executed in response to ground-based warnings, often suffer from high propellant costs and operational inefficiencies due to late detection …
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Parallel orbit propagation and the analysis of satellite constellations
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1995.
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Planning and scheduling for earth-observing small satellite constellations
The growth of Earth-observing small satellite constellations requires effective, automated operations management. State-of-the-art techniques must be improved to manage scheduling of observation data collection, data routing through a crosslinked constellation network, and maintenance of limited …
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Optimization and valuation of recongurable satellite constellations under uncertainty/
… when compared to traditional static satellite constellations. The thesis develops and demonstrates a general framework to guide the design and optimization of recongurable satellite constellations specifically tailored to stakeholder objectives while considering requirement uncertainty. The …
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A systems analysis of CubeSat constellations with distributed sensors
This thesis explores the use of CubeSat constellations as "gap fillers" and supplements to traditionally complex, multi-sensored satellites, increasing resiliency of the system at very low cost. In standard satellite acquisitions, satellites can take years and billions of dollars to reach …
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From CubeSats to constellations : systems design and performance analysis
… parts for CubeSats make them ideal for use in constellations. In this work, we provide an in-depth analysis of how to evolve from a single Earth-observing CubeSat to an effective CubeSat constellation. We first consider pointing capability provided by three different CubeSat attitude …
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Tirant lo Blanc(h): masculinities, phallosocial desire, and triangular constellations
The introduction of this thesis provides a revised survey that examines the analysis of Tirant scholars to date, including evaluations of its sources and influences, theories concerning its circulation, its autobiographical aspects, and its genre, among other approaches to literary criticism. It …
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Ad-Hoc Regional Coverage Constellations of Cubesats Using Secondary Launches
… architectures increase, methods of deploying constellations of CubeSats are required to increase functionality of future systems. Given their low cost and quickly increasing launch opportunities, large numbers of CubeSats can easily be developed and deployed in orbit. However, as secondary …
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