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 30 for “"Cislunar"”.
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Designing low thrust missions in cislunar space
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms
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Lunar Laser Ranging for Autonomous Cislunar Spacecraft Navigation
… regimes beyond Geosynchronous Earth Orbit and cislunar space are expected to grow in the coming years; Especially with the Moon reemerging as latest frontier in the race for space exploration and technological superiority. In order to support this growth, new methods of autonomously navigating …
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Characterizing Effective System Architectures for Cislunar Space Situational Awareness
… Space Situational Awareness (SSA) in the Cislunar region—the area between the geosynchronous belt and the Moon's gravitational boundary—poses significant technological and organizational challenges. Instead of proposing new theoretical systems, this thesis employs the Architecting …
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Assessing The Impact Of Spacecraft Fragmentation In The Cislunar Region
… focusing on satellites orbiting the Moon. The Cislunar region is known to have a higher non-linear chaotic component in the dynamics compared to the low-Earth environment. This research is focused on studying the impact that a satellite explosion has in the Cislunar vicinity. The study is …
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Investigation Into Geometry and Behavior of Cislunar GEO-Grazer Orbits
This thesis investigates a class of cislunar trajectories referred to as GEO-grazers: orbits that traverse the Earth–Moon system while grazing or passing below geosynchronous Earth orbit (GEO). These trajectories are of interest for cislunar space domain awareness (SDA) because they provide natural …
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Optimal control techniques for multimode propulsion mission design in cislunar space
… are shown for interplanetary, geocentric, and cislunar transfers for systems with large performance differences (i.e., thrust and specific impulse) between the modes. Forward single shooting is used to solve the example interplanetary and geocentric transfers in combination with hyperbolic …
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Linear covariance analysis trade study of autonomous navigation schemes for cislunar missions
… of autonomous sensors for a representative cislunar mission. The sensor suite is comprised of twelve sensors of varying measurement types and levels of flight readiness: MIMU IMU, LN200 IMU, star tracker, Inertial Stellar Compass (ISC), lunar orbiting beacon (Navsat), lunar ground beacons …
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Astrodynamics Modeling and Optimization of Space Logistics Maneuvers for Earth and Cislunar Orbits
L'abstract è presente nell'allegato / the abstract is in the attachment
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Heterogeneous Satellite Constellation Design for Cislunar Space Situational Awareness Using Real Options Analysis
… there is potential for the establishment of a cislunar economy, supporting NASA and providing commercial goods and services well beyond LEO [20]. Successful creation of a cislunar economy will require commercial and government cooperation at an altogether new scale. The vastness of this new …
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Cost Optimized Logistics for Commercial Operations in Low Earth Orbit and Cislunar Space
Designing profitable mission and logistics architectures is necessary to establish a profitable commercial market and support a robust space economy. It is the goal of the National Aeronautics and Space Administration (NASA) to establish such an economy in low Earth orbit (LEO) through the …
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Coupled Dynamics in the Cislunar Region and Spacecraft Attitude Prediction in a Higher-Fidelity Model
<p>The cislunar region of space is a complex, multi-body dynamical environment that cannot be modeled trivially. Traditional point-mass assumptions made to simplify the mission design process may be insufficient for accurately predicting spacecraft motion in environments where orbit-attitude …
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From the Earth to the Moon: A Multi-Domain Approach to Cislunar Space Domain Awareness
Growing interest in the Cislunar domain has resulted in numerous successful Lunar missions in recent years. Many burgeoning space programs, including those by governments and private industry, have seized the opportunity of this renewed interest and utilized the region as a proving ground to bring …
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A Low-Complexity Algorithm for Trajectory Generation in the Three-Body Problem
<p>The Cislunar realm holds intrinsic value for scientific, commercial, and military applications as numerous entities have begun to invest resources into the expansion and utilization of the region. As the Cislunar region continues to grow, there is an escalating need for efficient methods of …
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Autonomous Space Surveillance for Arbitrary Domains
… there are a growing number of spacecraft in cislunar space expanding the task of cataloguing and tracking space objects to include the whole of the earth-moon system.</p> <p>This research proposes a series of algorithms to be used in autonomous SSA for earth-orbiting and cislunar objects. The …
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Uncertainty-Based Methodology for the Development of Space Domain Awareness Architectures in Three-Body Regimes
… and technological capabilities. This increase in cislunar space activity and resulting increase congestion and conjunction events poses a significant safety impact to spacecraft on or around the moon. This risk was demonstrated on October 18th 2021 when India’s Chandrayaan 2 orbiter was forced to …
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Assessing Programmatic Variables and Uncertainties in Space Exploration Campaign Planning
… are used to find optimal launch schedules for a cislunar exploration campaign. In the deterministic case, the method is also used to study the impact of varying logistic provider availability on the optimal mission plan, and therefore make recommendations about logistics provider redundancies. In …
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Astrometric and Photometric Data Fusion in Machine Learning-Based Characterization of Resident Space Objects
… approach to orbital regime identification of cislunar RSOs from telescope observational data. These topics represent significant advancement in the field of SSA in three different areas associated with the RSO characterization problem, where each provide many opportunities for future research …
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A transfer network linking Earth, Moon, and the triangular libration point regions in the Earth-Moon system
… unmanned missions with a focus on operations in cislunar space. The triangular libration points, as well as lunar DROs and NRHOs describe special types of possible motion for a spacecraft/satellite that is influenced solely by the gravitational fields of the Earth and the Moon. What is common to …
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Designing Transfers Between Earth-Moon Halo Orbits Using Manifolds and Optimization
… spacecraft. With a renewed focus on missions in cislunar space, identifying efficient transfers in the dynamical environment characterized by the Circular Restricted Three-Body Problem (CR3BP) will be especially important, both now and in the immediate future. The focus of this thesis is to …
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