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 20 for “"trilateration"”.
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Development of a Self-Calibrated Motion Capture System by Nonlinear Trilateration of Multiple Kinects v2
… developed motion capture systems (the linear trilateration approach [52] and the geometric trilateration approach [51]) with the benchmark Opti Track system is performed for the tracked joints of the head, shoulder, elbow, and wrist, therein showing that the accuracy of our proposed system is …
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A Grid based Indoor Radiolocation Technique Based on Spatially Coherent Path Loss Model
… can be determined. A least-squares based trilateration is then used as the global fix of location the agent in the environment. The result of the trilateration is then represented in a probability distribution function over the grid cells induced by SCPL. Since the proposed technique is …
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Improving Bluetooth-based Indoor Positioning Using Vision and Artificial Networks
… converted into ranges using path loss models and trilateration is applied to obtain indoor positions. Two neural network algorithms were implemented. The first used only the RSSI values while the second incorporated a wearable camera as an additional source of information about the presence or …
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5G mmWave Integrated Positioning for Autonomous Vehicles in Urban Environments
… matrix while operating in a standalone 5G trilateration mode, where only range measurements are available. This approach utilizes range measurements from at least three base stations (BSs) and adjusts the reliability of these measurements based on their proximity to the user equipment (UE). …
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Direct position tracking in GPS using vector correlator
… the position and velocity of the receiver using trilateration. Different from this two-step approach, direct maximum likelihood estimation of position has proved to be beneficial in weak signal and multipath environments. In this thesis, an architecture of a direct position tracking loop that …
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Intelligent energy efficient localisation in wireless sensor networks
… model of localization error resulting from trilateration. The multilateration solution technique and analytical model are veried using simulation. Finally, we analyze trilateration errors in short range wireless networks, such as wireless sensor networks and internet of things where the …
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Moving-baseline localization for mobile wireless sensor networks
… each node performs robust hyperbola fitting, trilateration with velocity constraints, and subgraph alignment to arrive at a globally consistent view of the network expressed in its own "rest frame." Changes in any node's motion cause deviations between observed and predicted ranges at nearby …
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Ultrawideband IEEE802.15.4a Cognitive Localization Methods for the 5G Environment
… mean distance error of 0.54 – 3.32 shorter than trilateration and multi-dimensional scaling (MDS) methods respectively. Finally, the thesis proposes an overall IR-UWB network layout for the 5G setting. This comprises an all-IP D2D UWB network overlay of concurrent multi-layered super-core …
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Multi-Agent Relative Pose Estimation with Ultra-Wideband Ranging
… 2D relative pose estimation system based on trilateration, leveraging multiple UWB ranging sensors per agent. (3) Extension of said system to 3D environments. (4) A list of recommendations and continuations for future work.
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Joint position estimation, packet routing and sleep scheduling in wireless sensor networks
… I propose a localization algorithm that performs trilateration using the position of a mobile sink and of neighbour nodes to estimate the position of a sensor node with no GPS module. I introduce a routing protocol based on the well-known Greedy Geographic Forwarding (GGF). Similarly to GGF, my …
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Dual-Use Strain Sensors for Acoustic Emission and Quasi-Static Bending Measurements
… be source located by means of time-of-flight trilateration. The real time sensing of such events has led to the field of structural health monitoring (SHM) and has revolutionized NDE. Furthermore, with the application of modern micro-electromechanical system-based (MEMS) technology, the fields …
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Location estimation in a 3D environment using radio frequency identification tags
… developed here. Additionally, concept of trilateration has also been extended for tracking the tag of unknown location without the use of reference tags. Archival data set corresponding to all tag location due to four different tag readers was compiled. The unknown tag was probed with four …
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Reliable design of interdependent service facility systems under correlated disruption risks
… to provide positioning/surveillance service via trilateration procedure; and (3) incorporating the concepts of spatial districting into the reliable facility location context, with the criteria of spatial contiguity, compactness, and demand balance being ensured. First, in many real-world …
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Ground Vehicles and Ranging Sensors: Structural Properties for Estimation and Control
… solutions for the positioning problem, e.g. trilateration, is not trivial and leads to unintuitive results where constructibility is not attained. By building an abstract trajectory, which contains all the relevant information to reconstruct the actual trajectory followed by the vehicle, we …
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Precise Geolocation for Drones, Metaverse Users, and Beyond: Exploring Ranging Techniques Spanning 40 KHz to 400 GHz
… positioning nodes. Through the application of trilateration techniques, based on the calculated distances between these positioning nodes and the integrated sensors on the drone or metaverse user side, we facilitate robust three-dimensional localization. This strategic approach empowers us to …
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High-performance velocity, frequency and time estimation using GNSS
… solution. The PVT solution is computed through trilateration techniques, based on a TOA (Time Of Arrival) ranging technique, therefore the PVT solution is correlated to the measurement of time. In particular, the position solution is related to a time measurement while the velocity solution is …
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Srovnání metod pro lokalizaci uvnitř budov
Bakalářská práce se v teoretické části zabývá tématikou lokalizace osob či objektů pomocí IoT technologií ZigBee a LoRa™. Jsou zde probrány možnosti metod lokalizace, parametry užívaných technologií a seznámení se s existujícími moduly dostupnými na trhu. Výsledkem praktické části je návrh desek …
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Lokalizace a navigace dronu ve známém prostředí bez využití GNSS
Táto práca sa zaoberá vývojom lokalizačného systému bez využitia GNSS. V prvej časti práce sú charakterizované technológie, ktoré je možné použiť na určovanie polohy v priestore. Taktiež sú opísané metódy určovania vzdialenosti medzi vysielačom a prijímačom. V ďalšej časti práce je vysvetlený …
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Practical investigations in robot localization using ultra-wideband sensors
Made available in DSpace on 2021-09-17T01:13:41Z (GMT). No. of bitstreams: 3 WRIGHT-THESIS-2021.pdf: 45609799 bytes, checksum: 439b4bdb74e822cbda9343111030ecba (MD5) THESIS_NAWW.docx: 469786325 bytes, checksum: 3836a8b433cc05dd39b21ca875405ae8 (MD5) LICENSE.txt: 4212 bytes, checksum: …