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 6 of 6 for “"Ground-coverage"”.
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The Effects of Low Earth Orbit Satellite Constellation Altitude and Inclination on Simulated Non-Terrestrial Network Performance
… have impacted the types of service and extent of ground coverage each network can provide. The large scale of low Earth orbit (LEO) mega-constellations has allowed them to provide reliable internet access to a variety of communities and landscapes. When compared to their higher altitude …
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Satellite constellation design for mid-course ballistic missile intercept
… intercept problem leads to a new paradigm of coverage where interceptor "reachability" replaces line-of-sight coverage. Interceptors in this concept are limited in their time of flight and AV capabilities. Classical design approaches, based on ground coverage, are employed to provide a priori …
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Ad-Hoc Regional Coverage Constellations of Cubesats Using Secondary Launches
… of Cubes in a single plane and effectiveness of ground coverage of two regions. The regions examined are a large near-equatorial zone and a medium sized high latitude, high population density zone.</p> <p>Results indicate that simple deployment strategies can be utilized to provide significant …
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Optimization of central receiver concentrated solar thermal : site selection, heliostat layout & canting
… the tool for two field configurations, both with ground-level receivers. The heliostat layout optimization model includes a detailed calculation of the annual average optical efficiency accounting for projection losses, shading & blocking, aberration and atmospheric attenuation. The model is based …
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Uncertainty-Based Design Optimization and Decision Options for Responsive Maneuvering of Reconfigurable Satellite Constellations
… mission applications for persistent satellite coverage, including dynamic and unpredictable events such as natural disasters, oil spills, extreme weather events, or geopolitical conflicts, which may progress rapidly and require frequently-updated information to co-ordinate the ground response. …
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Countering-insurgency : a comparative analysis of campaigns in Malaya (1948-1960), Kenya (1952-1960) and Rhodesia (1964-1980)
History has lessons for the present; could this be the case for modern counterinsurgency operations in countries resembling Iraq and Afghanistan? This research set out to study three historical counter-insurgencies campaigns in, Malaya (1947-1960), Kenya (1952- 1960) and Rhodesia (1964-1980), with …