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 14 of 14 for “"avoidance algorithms"”.
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Parallel acceleration of deadlock detection and avoidance algorithms on GPUs
… exist that implement deadlock detection/avoidance techniques; however, they lack either the speed or problem size capability needed for real-time systems. The research conducted for this thesis aims to resolve issues present in past approaches by converging the two platforms (software and …
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An educational tool to assist students in the evaluation of object avoidance algorithms
Autonomous robots are becoming a part of everyday life. One difficulty in the creation of autonomous robots is having the robots avoid objects. In particular once one has chosen an algorithm difficulty arises in perfecting the parameters involved. Presented here is an implementation of an algorithm …
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Multi-contact protocol-constrained collision avoidance for autonomous marine vehicles
The field of autonomous collision avoidance has continued to advance in many areas including sensory and perception, navigation, payload integration, and collision avoidance. The advances in collision avoidance, however, have largely focused on iterative changes to the velocity obstacle - an …
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The Design and Simulation of a Transport Protocol for Interactive Network Applications
… internetwork through congestion detection and avoidance algorithms. Since TCP's inception in 1981, both the Internet and the applications which use it, have evolved. The result is a broad spectrum of data traffic, being transported by protocols which were developed twenty or more years …
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Securing the ADS-B Protocol for Attack-resilient Multiple UAV Collision Avoidance
… of information for emerging multi-UAV collision avoidance algorithms. The lack of security features in ADS-B leaves any processes dependent upon the information vulnerable to a variety of threats from compromised and dishonest UAVs. This could result in substantial losses or damage to properties. …
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A planned approach to high collision risk area
… generally view path planning and collision avoidance as two separate functions, i.e. a vessel will follow the planned path until conditions are met for collision avoidance algorithms to take over. Here an intermediate phase is proposed with the goal of adjusting the time of arrival to a high …
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A planned approach to high collision risk area
… generally view path planning and collision avoidance as two separate functions, i.e. a vessel will follow the planned path until conditions are met for collision avoidance algorithms to take over. Here an intermediate phase is proposed with the goal of adjusting the time of arrival to a high …
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Planning under uncertainty for dynamic collision avoidance
We approach dynamic collision avoidance problem from the perspective of designing collision avoidance systems for unmanned aerial vehicles. Before unmanned aircraft can fly safely in civil airspace, robust airborne collision avoidance systems must be developed. Instead of hand-crafting a collision …
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A LiDAR Based Semi-autonomous Collision Avoidance System and the Development of a Hardware-in-the-Loop Simulator to Aid in Algorithm Development and Human Studies
… for a steering based semi-autonomous collision avoidance system on a 1/10<sup>th</sup> scale model is presented. In addition, the development of a 2D hardware-in-the-loop simulator with vehicle dynamics based on the bicycle model is described. The semi-autonomous collision avoidance software is …
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Generating informative paths for persistent sensing in unknown environments
… trajectories. We develop collision and deadlock avoidance algorithms and quantify the impact of avoiding collision on the overall stability of the persistent sensing task. Simulated and experimental results support the proposed approach.
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Collision and Avoidance Modelling of Autonomous Vehicles using Genetic Algorithm and Neural Network
… the modelling and optimisation of collision avoidance, and to develop some optimisation algorithms based on genetic algorithms and neural networks to operate autonomous vehicles without any collision. Autonomous vehicles, also called self-driving vehicles or driverless vehicles are completely …
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Analytic Assessment of Collision Avoidance Systems and Driver Dynamic Performance in Rear-End Crashes and Near-Crashes
Collision avoidance systems (CASs) are being developed and fielded to reduce the number and severity of rear-end crashes. Kinematic algorithms within CASs evaluate sensor input and apply assumptions describing human-response timing and deceleration to determine when an alert should be presented. …
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Prospects for the Collision-Free Car: The Effectiveness of Five Competing Forward Collision Avoidance Systems
… crashes in the United States. Forward Collision Avoidance Systems (FCASs) are becoming increasingly available in production vehicles and have a great potential for preventing or mitigating rear-end collisions. The objective of this study was to compare the effectiveness of five crash avoidance …
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Demonstrating an Equivalent Level of Safety for sUAS in Shielded Environments
The current proposed unmanned aircraft system (UAS) detect and avoid standards require the same safety metrics, even when in close proximity to the ground or structures. This requirement has the potential to hinder low altitude small unmanned aircraft operations, such as local package delivery and …