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Showing 1 to 20 of 38 for “"Unmanned Aerial Systems (UAS)"”.
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Involuntary Signal-Based Grounding of Civilian Unmanned Aerial Systems (UAS) in Civilian Airspace
… involuntary signal-based grounding of civilian unmanned aerial systems (UAS) in unauthorized air spaces. The technique proposed here will forcibly land unauthorized UAS in a given area in such a way that the UAS will not be harmed, and the pilot cannot stop the landing. The technique will not …
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UNMANNED AERIAL SYSTEMS (UAS) IMAGE PREPROCESSING TO REDUCE ARTIFACTS AND IMPROVE GEOMETRIC REGISTRATION WHEN GENERATING ORTHOPHOTO MOSAICS AND 3D MODELS
<p>Drones can now be used to quickly collect imagery data in a highly automated way; however, individual images must be combined to form an orthomosaic or 3-Dimentional (3D) model using photogrammetry software. Currently, the existing software may generate erroneous output in the form of artifacts …
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Quantitative Approach and Departure Risk Assessment for Unmanned Aerial Systems
As the use of Unmanned Aerial Systems (UAS) becomes more common in both civilian/commercial and military applications, so too has the risk of injury to individuals and third parties on the ground. The purpose of this research is to further enhance methods currently in use for performing flight path …
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FEASIBILITY OF DETECTING AND CLASSIFYING SMALL UNMANNED AERIAL SYSTEM THREATS USING ACOUSTIC DATA
Unmanned aerial systems (UAS) have become a threat that the Department of Defense (DoD) must address. Malevolent actors have shown time and again that they will exploit any new technology for illicit ends. Current systems designed to defeat UAS threats have failed to demonstrate adequate …
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Airspace Integration of New Entrants and Safety Risk Management Models
… recent years, the demand for airspace access of Unmanned Aerial Systems (UAS) increased significantly and is continuously increasing for different altitude-types UAS. A similar evolution is expected from Commercial Space Operations (CSO) in the next years. These aviation/aerospace systems will …
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Obstacle Detection and Avoidance System for Unmanned Aerial Vehicles Based on Monocular Camera
Unmanned Aerial Systems (UAS), commonly known as drones, are aircraft systems without a human pilot onboard, controlled remotely or autonomously. Algorithms like YOLO (You Only Look Once) for object detection and pathfinding algorithms like A* (A-Star) can quickly navigate around large, static …
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Probabilistic Estimation of State via Propagation of Error for a Collision Warning System
… is scheduled to open the national airspace to Unmanned Aerial Systems (UAS) by 2015. Although there are many beneficial applications by integrating UASs into the national airspace, the primary concern is UAS related midair collisions. The University of Washington Department of Aeronautics \& …
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Modeling and Testing Powerplant Subsystems of a Solar UAS
… preliminary and detailed design of solar powered Unmanned Aerial Systems (UAS), it is necessary to have a thorough understanding of the systems involved. In particular, it is desirable to have mathematical models and analysis tools describing the energy income and expenditure of the vehicle. Solar …
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Virus constructed iron phosphate lithium ion batteries in unmanned aircraft systems
… with electronic devices. Today, battery powered Unmanned Aerial Systems (UAS) the size of a model plane such as the Raven allow soldiers to see dangerous situations and potential threats without ever needing to enter the area and put their lives in danger. This technology is saving lives and …
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Reconfigurable satellite constellations for geo-spatially adaptive Earth observation missions
… has been met by responsive architectures such as unmanned aerial systems (UAS) or artificial satellites. Space-based architectures can provide non-dominated design solutions on the utility-cost curve compared to alternate architectures through the use of two approaches: (1) reducing satellite …
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Integration of Macro-Fiber Composite Material on a Low Cost Unmanned Aerial System
<p>The development, deployment, and operation of Unmanned Aerial Systems (UAS) have grown exponentially in recent years and have provided researchers with the opportunity to gain hands-on experience with aircraft in a manner that was previously limited to institutions and companies with large …
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Quantitative Approach and Departure Risk Assessment for Unmanned Aerial Systems
The usage of unmanned aerial systems (UAS), also called drones, has grown at an increasing rate, with expectations of the number of unmanned aircraft (UA) to triple between 2019 and 2023 as commercial and government usage of UAS increases as per the Federal Aviation Administration. As the usage of …
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COST ANALYSIS FOR 3D PRINTED COUNTER-UNMANNED AERIAL SYSTEM (C-UAS) GUIDED ROCKET PROTOTYPE
… of China. The growing usage of inexpensive unmanned aerial systems (UAS) in military engagements exposes a critical vulnerability of the United States. The United States largely relies on expensive and sophisticated ordnance that have long production lead times. Stockpiles of these munitions …
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Design, Fabrication and Test of an Operationally Responsive Aircraft with NIIRS Evaluated Imager
<p>Unmanned Aerial Systems (UAS) are a growing asset. Currently UAS are on the cutting edge with resources being spent developing the capabilities mostly for military use. This project is intended to create a system for non-defense customers. Specifically, the Operationally Responsive Aircraft …
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The applications of autonomous systems to forestry management
… experts predict that multi-vehicle autonomous systems may enable new, cost effective methods for performing various forest management tasks[1]. However, it remains unclear how these technologies may be applied, or where to focus development efforts. This research attempts to address this gap in …
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The Effects of System Reliability and Task Uncertainty on Unmanned Aerial Vehicle Operator Performance under High Time Pressure
… has understood the value and versatility of Unmanned Aerial Systems (UAS). In the recent years, UASs have sparked the interest of other fields, and in the very near future, they will be introduced into the National Airspace System (NAS). With this inclusion come new concerns. Due to the …
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A software architecture towards automated data-driven multi-resolution crop scouting with an unmanned aerial system
… as crop damage from extreme weather. By using unmanned aerial systems (UAS) to obtain aerial imagery of the field, agronomists can hedge against unexpected events and develop scouting patterns driven by contemporary data. Yet, widespread adoption of UAS technology in precision agriculture is …
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ANC of UAS Rotor Noise using Virtual Error Sensors
Traditional active noise control (ANC) systems rely on a physical sensor to measure the error signal at the desired location of attenuation. The error signal is then used to update an adaptive controller, which ultimately attenuates the measured response. However, it is not always practical to use …
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Design of Flight Control Laws for a Novel Stratospheric Dual-Aircraft Platform
… is a novel concept that features two glider-like unmanned aerial systems (UAS) tethered via a thin adjustable cable allowing them to sail back-and-forth, without propulsion, using vertical wind shear. DAP offers the potential of a low-cost atmospheric satellite. This thesis presents the results of …
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Unmanned Aerial System for Monitoring Crop Status
As the cost of unmanned aerial systems (UAS) and their sensing payloads decrease the practical applications for such systems have begun expanding rapidly. Couple the decreased cost of UAS with the need for increased crop yields under minimal applications of agrochemicals, and the immense potential …
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