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 563 for “"Onboard"”.
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Improving Helicopter Yarding with Onboard GPS
… the operator to record additional information. Onboard GPS can reduce or eliminate the need for additional personnel and/or operator input providing a rapid means of assessing and improving helicopter operations. This research employed onboard GPS in helicopter yarding to assess the potential of …
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OnBoard Parameter Identification for a Small UAV
… of the aircraft were implemented by the pilot or onboard computer during the steady state portions of flights. The data from these maneuvers was used for this project.;The project was divided into three main parts: 1) off-line time domain PID, 2) off-line frequency domain PID, and 3) an onboard …
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Onboard Video Stabilization for Unmanned Air Vehicles
… picture. <br /><br />This thesis presents an onboard video stabilization solution that removes high-frequency jitter, displays output at 20 frames per second (FPS), and runs on a Blackfin embedded processor. Any video stabilization algorithm will have to contend with the limited space, weight, …
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Onboard distributed replanning for crosslinked small satellite constellations
This work implements distributed onboard planning and scheduling approach for crosslinked small satellites Earth observation missions. The example cases used involve 65 small satellites in ISS and Sun Synchronous Orbits, as well as NASA's Near Earth Network groundstations, and three target cases. …
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Quality of service for high-speed interconnection networks onboard spacecraft
State-of-the-art onboard spacecraft avionics use SpaceWire networks to interconnect payload data-handling sub-systems. This includes high data-rate sensors and instruments, processing units, and memory devices. SpaceWire is an interconnection network composed of nodes and routers connected by …
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The application of radio frequency identification devices onboard naval ships
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 2000.
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The use of onboard diagnostics to reduce emissions in automobiles
The emissions from automobiles are very harmful and include gases such as Carbon Dioxide, Nitrous Oxide, and Sulfur Dioxide. One of the main reasons OBD was created was to control emissions however it currently only monitors the status of the systems set in place to reduce emissions. The goal of …
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Aggressive Aerial Grasping using a Soft Drone with Onboard Perception
… a soft aerial manipulator equipped with a fully onboard perception pipeline, capable of robustly localizing and grasping visually and morphologically varied objects. The proposed system features a novel passively closing tendon-actuated soft gripper that enables fast closure at grasp, while …
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Validation of Passive Air Sampling Monitors Onboard United States Navy Submarines
… construction materials, materials brought onboard and compounds created through the interaction of ship systems. A comprehensive study of submarine atmospheres is ongoing during deployments of U.S. Navy nuclear submarines. As part of the overall effort, a paired air sampling comparison …
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Formation of RAAN-Spread CubeSat Constellations Utilizing Onboard Low-Thrust Propulsion
Internal gravity waves are waves in the atmosphere caused by the interaction of air with differing buoyancy. This instability can cause weather phenomena to occur as the wave travels vertically and horizontally over large distances. To characterize these internal gravity waves, radio occultation …
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Control, estimation, and planning algorithms for aggressive flight using onboard sensing
This thesis is motivated by the problem of fixed-wing flight through obstacles using only on-board sensing. To that end, we propose novel algorithms in trajectory generation for fixed-wing vehicles, state estimation in unstructured 3D environments, and planning under uncertainty. Aggressive flight …
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The application of Automatic Identification Technology onboard naval and commercial ships
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 2001.
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Autonomous altitude estimation of a miniature helicopter using a single onboard camera.
Autonomous estimation of the altitude of an Unmanned Aerial Vehicle (UAV) is extremely important when dealing with flight maneuvers like landing, steady flight, etc. Vision based techniques for solving this problem have been underutilized. In this thesis, we propose a new algorithm to estimate the …
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Ship structural analysis using finite element analysis and onboard stress monitoring methods
This dissertation covers the application of finite element analysis and hull stress monitoring and measuring methods, in the current day design of, and/or the analysis of ship structures.
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Autonomous onboard guidance and navigation performance for Earth to Mars transfer missions
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1992.
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Onboard trajectory generation for the unpowered landing of autonomous Reusable Launch Vehicles
Onboard trajectory generation dispenses with the pre-defined trajectories used. in Reusable Launch Vehicle (RLV) guidance since the early days of the Shuttle era. This shift, enabled by a new breed of algorithms harnessing modern computer power, offers improvements in performance, robustness, …
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A design study of onboard navigation and guidance during aerocapture at Mars
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1988.
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Reduced order modeling for stochastic prediction and data assimilation onboard autonomous platforms at sea
… Due to the operational constraints such as onboard power, memory, bandwidth, and space limitations, efficient adaptive reduced order models (ROMs) are needed for onboard predictions. In the first part, several reduced order modeling schemes for regional ocean forecasting onboard autonomous …
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Design and implementation of a universal onboard battery fast charger for transportation electrification applications
Electric vehicles (EVs) have signaled a new era in the transportation sector. One key area that is still in development and has a future scope for advancement is the efficient charging systems of the EVs. Due to safety limitations and the lack of charging infrastructure, most of EVs are opted with …
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