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 21 for “"Speed estimation"”.
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Runway Exit Speed Estimation Models
… as deceleration rate along the turnoff and the speed at which an aircraft takes an exit (exit speed at the point of curvature). The deceleration rate along the turnoff is specific to every aircraft. This study involves predicting the exit speed at the point of curvature based on the type of exit …
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Vehicle tracking and speed estimation for traffic surveillance
… of motorists, traffic law enforcement assign speed limits at different locations throughout the country. However, irresponsible motorists still exceed the speed limit since they know it is unlikely that they will get caught. In this paper, a system is developed which is capable of detecting …
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Inverse methods for sound speed estimation in the ocean
… computational approaches for estimating sound-speed in the ocean under different conditions. The first part of the dissertation discusses a fast approach for solving the inverse problem of estimating sediment sound-speed based on the Deift-Trubowitz trace formula. Under certain assumptions, …
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Quality control and analysis of an updated wind gust data set in the United States
… and implications for long return period wind speed estimation. In total, the data set contains more than 17.9 million peak wind gusts, including nearly double the station-years available compared to the data set used in the current ASCE/SEI 7-22 wind hazard maps. A rigorous quality control …
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Doppler spread estimation in mobile fading channels
The Doppler spread, or equivalently, the mobile speed, is a measure of the spectral dispersion of a mobile fading channel. Accurate estimation of the mobile speed is important in wireless mobile applications which require such as knowledge of the rate of channel variations. In this dissertation, …
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Near-surface tornado wind field estimation using damage patterns
… in-situ measurements and limitations of the wind speed estimation from structural damage. As a result, a method of estimating the near-surface wind field of a tornado using tree damage, known as tree-fall analysis, is often used as an independent wind speed estimation method. Tree-fall analysis is …
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Deep learning-based framework for traffic estimation for the MLK Smart Corridor in downtown Chattanooga, TN
… tracking, movement direction identification, and speed estimation. We chose YOLOv7 for objects detection given its ability to run up to 160 fps. We trained YOLOv7 to detect and classify vehicles into four classes with a reported mean average precision of 0.69. For re-identification, we refined the …
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Visual Perception of Biological Motion
… of information about activity identification and speed estimation. A human performer produced 7 actions ranging from overarm throwing to overarm bowling, at 5 different speeds. A Selspot System recorded actual movement parameters while a video camera simultaneously recorded the visual stimuli. …
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Self-Powered Intelligent Traffic Monitoring Using IR Lidar and Camera
… the presented approach includes vehicle counts, speed estimation and vehicle classification based on size. Two categories of sensors are used including IR Lidar and IR camera. With the two sensors, three detection techniques are used: Time of Flight (ToF) based, vision based and Laser spot flow …
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One-terminal traveling wave-based protection for HVAC and HVDC transmission lines
… It addresses inaccuracies in wave velocity estimations, which traditionally lead to problems in methods based on traveling waves, and presents solutions to these problems. The proposed methods have been evaluated through computer simulations. The proposed earth fault distance protection for …
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Assessment of Vehicle-to-Vehicle Communication based Applications in an Urban Network
… distance of incident information propagation and speed estimation error are used to measure the performance of event-driven and periodic applications based on different market penetration rates of equipped vehicles and wireless communication coverage in both morning peak and non-peak times. The …
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Learning from videos with deep convolutional LSTM networks
… tasks: classification, ordering, and speed estimation. Models trained on this dataset are shown to differ in key ways depending on the task and their use of 2D convolutions, 3D convolutions, or convolutional LSTMs. An empirical analysis indicates a complex, interdependent relationship …
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Condition based monitoring and protection in electrical distribution systems
… detecting principal slot harmonics for speed estimation and diagnostics. Second, data from nonintrusive monitors have been shown to be valuable for power systems design. This thesis presents a new behavioral modeling framework developed for microgrid-style shipboard power system design …
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DEVELOPMENT OF TECHNOLOGIES AND METHODS OF ANALYSIS FOR THE FUNCTIONAL EVALUATION OF PERFORMANCE IN FOOTBALL
… of IMU data and spatial features. The ball speed estimation through ML models achieved RMSE of 3.21 km/h in controlled laboratory conditions and 13.6 km/h in match scenarios. Athletic performance validation demonstrated step detection accuracy of 95.8% and distance estimation with RMSE of …
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Non-intrusive efficiency estimation of inverter-fed induction machines
… and non-intrusive techniques for efficiency estimation of induction machines be investigated, that consider sinusoidal and non-sinusoidal supplies. This work proposes a non-intrusive efficiency estimation technique for inverter–fed induction motors that is based on harmonic regression …
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Data-driven and Model-based Bearing Fault Analysis - Wind Turbine Application
… such as in wind turbines, shaft rotational speed varies with respect to time, and consequently the normal frequency domain analysis, which is valid for constant speed condition, cannot be used. Alternatively, order tracking in conjunction with phase demodulation has been used to resample the …
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On-line condition monitoring and detection of stator and rotor faults in induction motors.
… settings. The thesis starts by investigating the estimation of rotor speed and rotor slot number. These two parameters are important in determining the fault frequency components that are used for detecting the stator and rotor faults. The rotor speed investigation compares four different …
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A New Infrastructure Demand Model for Urban Business and Leisure Hubs - a case study of Taichung
… night market activity distribution and a rapid estimation of road traffic speeds from Google directions API, and model validation. Another new contribution is the understanding of the nature and magnitude of future infrastructure demand through assessing three alternative land use scenarios: (1) …
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Effects of Fertility Control on the Movement Ecology of White-Tailed Deer
… — specifically, the relationship between mean speeds and diffusion rates using continuous-time speed and distance estimation techniques. Accurate modeling of an animal’s speed and distance traveled can be critical for interpreting behavior, yet ecological data often are too coarse, or the …
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