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 38 for “"Satellite constellation"”.
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Optimization of satellite constellation reconfiguration
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2003.
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Broadband satellite constellation design & evaluation
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2001.
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Satellite constellation design for mid-course ballistic missile intercept
… establish a conceptual approach to the design of constellations for satellite-based mid-course missile defense. The ballistic missile intercept problem leads to a new paradigm of coverage where interceptor "reachability" replaces line-of-sight coverage. Interceptors in this concept are limited in …
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A phase-based approach to satellite constellation analysis and design
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1991.
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Proliferated Low Earth Orbit (pLEO) Satellite Constellation Handover Cost Analysis
… very true of proliferated Low Earth orbit (pLEO) satellite constellation networks in which both the satellite and the user are mobile with respect to each other. As satellites travel in their obits, they move into and out of ground users’ views every few minutes [4], and mobile users can move into …
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Optimization of satellite constellation deployment strategy considering uncertain areas of interest
… design a flexible multi-stage telecommunication satellite configuration deployment strategy considering the uncertainties in the evolution of the areas of interest over time. The constructed stochastic demand model considers multiple possible scenarios for the evolution of the areas of interest …
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Toward Real-time Earth Observation with Satellite Constellation Crosslinks and Propulsion
The development of remote sensing small satellite constellations has created the potential for high-resolution Earth-observation data to reach end users faster. This work investigates how propulsion and intersatellite links enable constellations to continuously collect and deliver data faster than …
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Analytical methods for satellite constellation reconfiguration and reconnaissance using low-thrust manoeuvres
… change, when compared with a non-manoeuvring satellite. The second scenario considers a constellation of 24 satellites that can manoeuvre to provide targeted coverage of a region of the Earth as required. A full set of manoeuvres for all satellites is generated for four sequential targets, …
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Development of a Special Purpose End-to-End Satellite Constellation Design Methodology
… improved the capacity to economically deploy satellite constellations. These constellations are profoundly versatile, with the potential to allow researchers to gather large volumes of data from astronomy and Earth-observing missions over an unconstrained mission lifetime. However, many …
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Heterogeneous Satellite Constellation Design for Cislunar Space Situational Awareness Using Real Options Analysis
The number of commercial satellites in Low Earth Orbit (LEO) increased more than four-fold in the decade between 2011 and 2021, a trend that is likely to continue due to the combination of increasingly capable technologies and business models [23] [24]. Building on the success of the LEO economy, …
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Satellite Constellation Optimization for In-Situ Sampling and Reconstruction of Tides in the Thermospheric Gap
… focuses on the design and optimization of a two-satellite, highly elliptical satellite constellation to perform in-situ observations and reconstruction of tidal features in the 100-200 km region. The model atmosphere for retrieving sample data is composed of DE3 and DE2 tidal features from the …
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Optimal satellite constellation spare strategy using multi-echelon inventory control with stochastic demand and lead times
The recent growing trend to develop large-scale satellite constellations (i.e., megaconstellation) with low-cost small satellites has brought the need for an efficient and scalable maintenance strategy decision plan. Traditional spare strategies for satellite constellations cannot handle these …
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Incorporation of cross-link range measurements in the orbit determination process to increase satellite constellation autonomy
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1988.
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The Effects of Low Earth Orbit Satellite Constellation Altitude and Inclination on Simulated Non-Terrestrial Network Performance
Through the history of satellite communications, non-terrestrial networks (NTNs) have varied in scale and architecture. Satellite orbital elements have been a key feature of the ongoing development and design of modern constellations. Orbital altitude and inclination have impacted the types of …
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Model-agnostic Methodology for High-Altitude Balloon Mission Planning
… the resiliency of a degraded LEO Walker-Delta satellite constellation. One study explores the trends in Walker-Delta design parameters that impact constellation coverage degradation to understand the worst-case degradation scenario. A second study then evaluates the ability for latex …
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Miniaturized Antenna for Satellite Broadband Application
… antenna is a crucial component of a high-speed satellite internet system. High directivity, broadband characteristics, and circularly polarized radiations are essential for a user antenna to maintain a reliable connection with the overhead LEO satellite constellation. For commercialization and …
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Evolution of artificial space debris clouds
… prove to be important in mission planning and satellite shielding design.<br/><br/>The SDS (Space Debris Simulation) software suite has been developed to carry out the analysis presented in this thesis and now represents the state-of-the-art in debris cloud modelling. The integrated structure …
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Lyapunov feedback control in equinoctial elements applied to low thrust control of elliptical orbit constellations
For a typical satellite constellation design problem, sometimes there are two conflicting goals. On one hand one wishes to provide continuous coverage of a particular area. On the other hand one would like to use the minimum number of satellites as possible. For coverage locations nearer the …
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Developing a Platform for Expanding AUV exploRation to Longer ranges (PEARL)
… mission data to a high-bandwidth low-Earth orbit satellite constellation for remote access and monitoring. This thesis describes the various stages of design and testing to develop PEARL. The first prototype explores the structures and docking capabilities of PEARL to inform initial designs. A …
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