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 433 for “"UAVs"”.
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Locating Unmanned Aerial Vehicles (UAVs)
… and usefulness of Unmanned Aerial Vehicles (UAVs) or drones, they are not allowed to fly in some areas without prior permission from the Federal Aviation Administration (FAA). However, many incidents of UAVs breaching such restrictions have been reported. A UAV location system can help the …
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Navigation for UAVs using Signals of Opportunity
The reliance of Unmanned Aerial Vehicles (UAVs) on Global Navigation Satellite System (GNSS) for autonomous operation represents a significant vulnerability to their reliable and secure operation due to signal interference, both incidental (e.g. terrain shadowing, ionospheric scintillation) and …
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Multichannel Sense and Avoid Radar for Small UAVs
… and avoid radar system for small fixed-wing UAVs (also known as sUAS or drones). The target sUAS is a 40% Yak-54 remote controlled aircraft with a typical payload of 10 lbs. Small UAS’s such as these are increasing in popularity for both personal, commercial, and government use including …
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Flight Testing Small UAVs for Aerodynamic Parameter Estimation
<p>A flight data acquisition system was developed to aid unmanned vehicle designers in verifying the vehicle's design performance. The system is reconfigurable and allows the designer to choose the correct combination of complexity, risk, and cost for a given flight test. The designer can also …
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Robust and decentralized task assignment algorithms for UAVs
… of decentralized task assignment for a fleet of UAVs. The main objectives of this work are to improve the robustness to noise and uncertainties in the environment and improve the scalability of standard centralized planning systems, which are typically not practical for large teams. The main …
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Robust planning for heterogeneous UAVs in uncertain environments
… of autonomy than is currently implemented. While UAVs have mainly been used in reconnaissance missions, future UAVs will have more sophisticated objectives, such as Suppression of Enemy Air Defense (SEAD) and coordinated strike missions. As the complexity of these objectives increases and higher …
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Distributed Target Detection and Coverage for Holonomic UAVs
This thesis implements a novel distributed, deterministic algorithm for as few unmanned agents as possible to detect and cover as many static targets of unknown location as possible. This algorithm, Pruning-Perception-Decision (PPD), strikes the balance of exploration versus exploitation by …
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Low altitude unmanned aerial vehicles (UAVs) in wireless networks
In the realm of 5G wireless communications, UAVs present an intriguing prospect owing to their inherent attributes, such as mobility, flexible deployment, autonomy, line-of-sight establishment, and adjustable altitude. The rapid evolution of 5G and beyond 5G networks, alongside advancements in …
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Low altitude unmanned aerial vehicles (UAVs) in wireless networks
In the realm of 5G wireless communications, UAVs present an intriguing prospect owing to their inherent attributes, such as mobility, flexible deployment, autonomy, line-of-sight establishment, and adjustable altitude. The rapid evolution of 5G and beyond 5G networks, alongside advancements in …
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Geofencing trajectory estimation for small-scale fixed-wing UAVs
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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A distributed flight control system architecture for small UAVs
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
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Persistent vision-based search and track using multiple UAVs
Unmanned aerial vehicles (UAVs) have attracted interest for their ability to carry out missions such as border patrol, urban traffic monitoring, persistent surveillance, and search and rescue operations. Most of these missions require the ability to detect and track objects of interest on or near …
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Investigation of Control Effectors for Ducted Fan VTOL UAVs
Ducted fan VTOL UAVs are currently being designed for use by the Army for surveillance and reconnaissance in the battlefield. The vehicle tested in this research is part of the Honeywell MAV program. Able to be carried in a backpack by a single soldier, it has a duct diameter of 11.5-in. and weighs …
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Nonlinear Controller Design for UAVs with Time-Varying Aerodynamic Uncertainties
<p>Unmanned Aerial Vehicles (UAVs) are here and they are here to stay. Unmanned Aviation has expanded significantly in recent years and research and development in the field of navigation and control have advanced beyond expectations. UAVs are currently being used for defense programs around the …
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Decentralized Control of Multiple UAVs for Perimeter and Target Surveillance
… technologies for small unmanned air vehicles (UAVs), the algorithms utilizing teams of these vehicles are becoming an increasingly important research area. Unfortunately, there is no unified framework into which all (or even most) cooperative control problems fall. Five factors that affect the …
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Implementation Issues of Real-Time Trajectory Generation on Small UAVs
… facilitating coordination of multiple small UAVs.
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Control of quad-rotor UAVs using switched-system synthesis methods
… configuration. Since first introduced in 1917, UAVs have been extensively studied and utilized in various circumstances that prefer no human pilots aboard, due to safety, expenses, etc. Stability is crucial in controller design, while other parameters also draw great concerns, depending on the …
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Online trajectory planning for UAVs using mixed integer linear programming
This thesis presents a improved path planner using mixed-integer linear programming (MILP) to solve a receding horizon optimization problem for unmanned aerial vehicles (UAV's). Using MILP, hard constraints for obstacle and multi-vehicle avoidance as well as an approximation of vehicle dynamics are …
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