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 52 for “"POSITION INFORMATION"”.
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High-accuracy distributed sensor time-space-position information system for captive-carry field experiments
… test and evaluation experiments require that the position of the aircraft and other moving objects on the range be known precisely as a function of time. Terminal Time-Space-Position Information (TSPI) systems involve the range platforms interacting at close distances and therefore require precise …
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Robust GPS-based timing for phasor measurement units based on single-receiver and multi-receiver position-information-aided vector tracking
… future of power systems, PMUs rely on the Global Positioning System (GPS) to provide the absolute time reference necessary to synchronize phasor measurements. The security and reliability of PMUs are essential to the future of the power grid and so in this work we aim to provide robust GPS timing …
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Providing Location Security in Vehicular Ad Hoc Networks
<p>Location is fundamental information in Vehicular Ad-hoc Networks (VANETs). Almost all VANET applications rely on location information. Therefore it is of importance to ensure location information integrity, meaning that location information is original (from the generator), correct (not bogus or …
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Generating group agreement in cooperative computer-mediated groups: Towards an integrative model of group interaction
… three levels of social influence (informational influence, personal influence, and normative influence), and three types of output (task results, relationships, and agreement). The background upon which these processes operate is the communication setting. A proposed taxonomy of …
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Multiple Target Tracking in Experimental Multistatic MIMO mmWave Radar Sensor Networks
… addresses the shortcomings in current wireless position technology and is capable of seamlessly integrating with millimeter-wave (mmWave) communication infrastructure. The developed system is a radar sensor network (RSN) composed of distributed low-cost mmWave devices, which are designed to …
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Floating coil position detection system for the Levitated Dipole Experiment
… act requires a feedback mechanism to control the position of the ring in the vacuum vessel. This thesis presents a design for a position detection system to give position information to the feedback controller and digital filters to reduce the effect of noise in the position measurements.
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Automated Visual Database Creation For A Ground Vehicle Simulator
… coordinates using stereo disparity and vehicle position information. The resulting 3D road models were accurate to within 1 meter.
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Multiple hypothesis positioning algorithm for robust GPS-denied navigation
… GPS. However, these systems rely on prior position knowledge for system initialization. In GPS-denied scenarios, prior position knowledge may not be available or trustworthy. Similarly, other GPS-denied navigation techniques such as landmark navigation or vision-aided navigation can be …
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The Automated Laser Position System - ALPS
… industry needs an accurate real-time positioning system. Such a system, if successfully implemented, would lead to significant increases in the performance of many construction operations. This thesis presents the Automated Laser Position System (ALPS) for accurate real-time …
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Electronic rotor position sensing of switched reluctance motor
… (hereafter referred to as SRM) requires rotor position information for successful operation. The rotor position, in the present day, is obtained through a mechanical/electrical sensor mounted on the rotor shaft. These transducers are expensive and take additional space on the rotor shaft. An …
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Interferometric-spatial-phase imaging for sub-nanometer three-dimensional positioning
… novel method of alignment and three-dimensional position metrology that is compatible with many forms of proximity lithography. The method is called Interferometric-Spatial-Phase Imaging (ISPI), and is based on encoding three-dimensional position information in the spatial phase and frequency of …
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Indoor Localization of Wheeled Robots using Multi-sensor Data Fusion with Event-based Measurements
… collaborative localization (e.g. using the position information from other robots) and finally optimizing the placement of landmarks in the environment once the detection range of the chosen sensors is known. As far as the first subject is concerned, a robot should be able to localize itself …
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Kalman filter estimation of underwater vehicle position and attitude using Doppler velocity aided inertial motion unit
… real-time estimates of underwater vehicle position and attitude. The types of previously available sensors are detailed including strapdown accelerometers, roll and pitch sensors, gyro and magnetic compasses, depth sensor, and various types of acoustic positioning systems. A doppler …
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Indoor Positioning Using Acoustic Pseudo-Noise Based Time Difference of Arrival
<p>The Global Positioning System (GPS) provides good precision on a global scale, but is not suitable for indoor applications. Indoor positioning systems (IPS) aim to provide high precision position information in an indoor environment. IPS has huge market opportunity with a growing number of …
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A neural inspired grid cell aid for robot intertial navigation.
Accurate position information is needed for a robot's guidance and control systems. Therefore, the navigation system is foundational for a robot's interactions with the world. This thesis explores a biologically inspired method of navigation with the goal of improving navigational accuracy. The …
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Privacy Risk Mitigation Strategies for Drone Package Delivery
… Due to regulations requiring drones to broadcast position information, this business model results in a privacy risk: Third-party observers may use broadcast drone trajectories to link customers to the vendors from which they order, with a wide range of potential consequences. We propose a …
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An Optical Resection Local Positioning System for an Autonomous Agriculture Vehicle
Obtaining accurate and precise position information is critical in precision and autonomous agriculture. Systems accurate to the centimeter-level are available, but may be prohibitively expensive for relatively small farms and tasks that involve multiple vehicles. Optical resection is proposed as a …
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MULTI-AGENT SOURCE LOCALIZATION USING PASSIVE SENSING
… systems are considered where neither the position information of the agents nor the position information of the source is available. An agent is assumed to have a single sensor to sense the source intensity and hence conducts temporal sensing to sense the gradient. For social interaction, …
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Dynamic gesture recognition using transformation invariant hand shape recognition
… gestures we utilise both hand shape and hand position information; these are two o f the main features used by humans in distinguishing gestures. Hidden Markov Models (HMMs) are trained and employed to recognise this combination of hand shape and hand position features. During the course o f …
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Six degrees of freedom estimation using monocular vision and moiré patterns
We present the vision-based estimation of the position and orientation of an object using a single camera relative to a novel target that incorporates the use of moire patterns. The objective is to acquire the six degree of freedom estimation that is essential for the operation of vehicles in close …
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