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 47 for “"Vehicle Navigation"”.
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Robust autonomous vehicle navigation
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 2002.
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Reliable dynamic in-vehicle navigation
… started off from luxury makes and models, in-vehicle navigation systems are now gradually spreading through the entire vehicle fleet, as drivers appreciate their usefulness. Increasingly sophisticated systems are being developed, having much more advanced functions than simple driving …
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Map-Based Localization for Unmanned Aerial Vehicle Navigation
Unmanned Aerial Vehicles (UAVs) require precise pose estimation when navigating in indoor and GNSS-denied / GNSS-degraded outdoor environments. The possibility of crashing in these environments is high, as spaces are confined, with many moving obstacles. There are many solutions for localization in …
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Techniques in Kalman Filtering for Autonomous Vehicle Navigation
… examines the design and implementation of the navigation solution for an autonomous ground vehicle suited with global position system (GPS) receivers, an inertial measurement unit (IMU), and wheel speed sensors (WSS) using the framework of Kalman filtering (KF). To demonstrate the flexibility …
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A parallel hypothesis method of autonomous underwater vehicle navigation
… hypothesis method for autonomous underwater vehicle navigation that enables a vehicle to expand the operating envelope of existing long baseline acoustic navigation systems by incorporating information that is not normally used. The parallel hypothesis method allows the in-situ identification …
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Ground Vehicle Navigation through Traversability Analysis of Outdoor Environments
Il presente lavoro di tesi riporta l'attività di ricerca condotta sul problema della navigazione di veicoli terrestri autonomi in ambienti outdoor non strutturati. Tali ambienti sono molto frequenti in un'ampia gamma di scenari applicativi, come la ricerca e il soccorso in caso di calamità, il …
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A parallel hypothesis method of autonomous underwater vehicle navigation
… hypothesis method for autonomous underwater vehicle navigation that enables a vehicle to expand the operating envelope of existing long baseline acoustic navigation systems by incorporating information that is not normally used. The parallel hypothesis method allows the in-situ identification …
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Autonomous underwater vehicle navigation and mapping in dynamic, unstructured environments
… suite of sensors available, so that the navigation and mapping system presented works under a variety of deployment scenarios, including the potential incorporation of external localization systems such as long-baseline acoustic networks. Results of using the system to map the draft of …
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An Underwater Vehicle Navigation System Using Acoustic and Inertial Sensors
<p>Unmanned Underwater Vehicles (UUVs) have become an essential tool for different underwater tasks. Compared with other unmanned systems, the navigation and localization for UUVs are particularly challenging due to the unavailability of Global Positioning System (GPS) signals underwater and the …
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Utility-based map reduction for ground and flight vehicle navigation
Maps used for navigation often include a database of location descriptions for place-recognition (to enable localization or loop-closing), which permits bounded-error navigation performance. A standard localization system must describe the entire operational environment in its place-recognition …
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Autonomous underwater vehicle navigation and mapping in dynamic, unstructured environments
… suite of sensors available, so that the navigation and mapping system presented works under a variety of deployment scenarios, including the potential incorporation of external localization systems such as long-baseline acoustic networks. Results of using the system to map the draft of …
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Range-Based Autonomous Underwater Vehicle Navigation Expressed in Geodetic Coordinates
… GPS is unavailable to autonomous underwater vehicles (AUVs) while submerged due to the rapid attenuation of radio frequency signals in seawater. Underwater vehicles often use other navigation technologies. This thesis describes a range-based acoustic navigation system that utilizes range …
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Reinforcement Learning with Gaussian Processes for Unmanned Aerial Vehicle Navigation
… Reinforcement Learning (RL) for Unmanned Aerial Vehicle (UAV) navigation with the smallest number of real world samples possible. This work is motivated by applications of learning autonomous navigation for aerial robots in structural inspec- tion. A naive RL implementation suffers from curse of …
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Geophysical map representation, abstraction and interrogation for autonomous underwater vehicle navigation
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1994.
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A homotopy-based hierarchical framework for semi-autonomous/autonomous vehicle navigation
Semi-autonomous and autonomous vehicles have been of interest for reasons such as safety, efficiency, and convenience. The thesis proposes a homotopy-based hierarchical motion planning and control framework for vehicle navigation. A homotopy is, roughly speaking, a set of trajectories with the same …
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Virtual long baseline (VLBL) autonomous underwater vehicle navigation using a single transponder
(cont.) Therefore, accurate underwater navigation using a single location transponder would provide dramatic time and cost savings for underwater vehicle operations. This thesis presents a simulation of autonomous underwater vehicle navigation using a single transponder to create a virtual long …
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Outlier-Robust Multi-View Triangulation Using Graduated Non-Convexity for Space Vehicle Navigation
Triangulation is used in terrain relative navigation (TRN) to identify the position of terrain features with respect to the spacecraft and to ultimately estimate the spacecraft’s pose during planetary landing and navigation. This thesis seeks to improve current multi-view triangulation methods to …
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Identification of barriers and least cost paths for autonomous vehicle navigation using airborne LIDAR data
… Grand Challenges, races among autonomous ground vehicles in rural environments. These vehicles must follow a course delineated by Global Positioning System waypoints using no human guidance. Airborne LIDAR data and GIS can play a significant role in identifying barriers and least cost paths for …
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Realtime Vehicle Route Optimisation via DQN for Sustainable and Resilient Urban Transportation Network
… However, it is still a challenging task for the vehicles to interact with the complex city environment in a real time manner. In this thesis, we propose a deep reinforcement learning (DRL) method to build a real-time intelligent vehicle navigation system for sustainable and resilient urban …
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Off-line Multi-Sensor Multi-Source Calibration of Dynamic Traffic Assignment: Simultaneous Demand-Supply Estimation based on Genetic Algorithms in a High-Performance Computer
… the emerging traffic surveillance data from in-vehicle navigation system technology provide an enrich source of disaggregate speed data. The empirical results from various experiments support the hypothesis that the incorporation of the in-vehicle navigation system speed data can significantly …
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