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 13 of 13 for “"Resident Space Object"”.
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Adaptive Methods of Resident Space Object Identification for Space Situational Awareness
<p>One of the fundamental tenets of Space Situational Awareness (SSA) is the detection and sub sequent identification of Resident Space Objects (RSOs) within unresolved optical space imagery. This function is vital to the documentation and tracking of RSOs in their respective operational orbits, …
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Operational Scheduling of Deep Space Radars for Resident Space Object Surveillance
As space becomes increasingly congested and contested, new capabilities of rivals to threaten vital assets and exploit the area for military advantages make it more important than ever for the United States to proficiently track and monitor space traffic and debris. However, currently the system of …
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On-Orbit Resident Space Object (RSO) Detection Using Commercial Grade Star Trackers
The resident space object (RSO) population, including both functioning satellites and on-orbit debris, has grown to the point where dedicated ground and space-based networks are needed to maintain up-to-date catalogues of their orbits. Current tracking efforts are effective but some RSOs can go …
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Reactive, Autonomous, Markovian Sensor Tasking in Communication Starved Environments
The current Space Traffic Management (STM) community was not prepared for the exponential increase in the resident space object (RSO) population that has taken place over the last several years. The combination of poor communication infrastructure and long scheduling lead times of the Space …
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Spacecraft Trajectory Planning for Optimal Observability using Angles-Only Navigation
… maneuvers and trajectory planning methods for spacecraft under constrained relative motion. The resulting contribution is a guidance method for impulsive rendezvous and proximity operations valid for elliptic orbits of arbitrary eccentricity.</p> <p>The system dynamics describe the relative …
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Mission-driven Sensor Network Design for Space Domain Awareness
… for optimizing sensor networks to enhance Space Domain Awareness in the face of a burgeoning resident space object population. By employing advanced metaheuristic optimization techniques and high-fidelity modeling and simulation, this research investigates the intricate interplay between …
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Estimation of Spacecraft Attitude Motion and Vibrational Modes Using Simultaneous Dual-Latitude Ground-Based Data
<p>Cutting-edge Space Situational Awareness (SSA) research calls for improved methods for rapidly characterizing resident space objects. In this thesis, this will take the form of speeding up convergence of spacecraft attitude estimates, and of a non-model-based approach to the detection of …
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System Design and Implementation of the Virginia Tech Optical Satellite Tracking Telescope
… (COTS) designed tracking system for Space Situational Awareness (SSA) data contribution. A novel approach is considered, combining two COTS systems, a high-powered telescope, built for astronomy purposes, and a larger field of view (FOV) camera. Using only publicly available two-line …
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Autonomous and Responsive Surveillance Network Management for Adaptive Space Situational Awareness
As resident space object populations grow, and satellite propulsion capabilities improve, it will become increasingly challenging for space-reliant nations to maintain space situational awareness using current human-in-the-loop methods. This dissertation develops several real-time adaptive …
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Attitude Determination & Control System Design and Implementation for a 6U CubeSat Proximity Operations Mission
… and capabilities of the Application for Resident Space Object Proximity Analysis and IMAging (ARAPAIMA) proximity operations mission. The satellite is equipped with a cold gas propulsion system capable of exerting 2.5 mN m torques in both directions about each body axis. The attitude …
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Design of a Co-Orbital Threat Identification System
With the increase in space traffic, proliferation of inexpensive launch opportunities, and interest from many countries in utilizing the space domain, threats to existing space assets are likely to increase dramatically in the coming years. The development of a system that can identify potential …
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Astrometric and Photometric Data Fusion in Machine Learning-Based Characterization of Resident Space Objects
In this dissertation, a topic fundamental to Space Situational Awareness (SSA) is considered: resident space object (RSO) physical and dynamical property estimation (characterization). This topic is explored by leveraging both simulated and observational data of RSOs in conjunction with physics- …