Results 31 to 40 of about 9,040 (196)

Acoustic positioning and tracking in Portsmouth Harbour, New Hampshire [PDF]

, 2007
Portsmouth Harbor, New Hampshire, is frequently used as a testing area for multibeam and sidescan sonars, and is the location of numerous ground-truthing studies. Having the ability to accurately position underwater sensors is an important aspect of this
Huff, Lloyd C, Mayer, Larry A., McGillicuddy, Glenn, Schmidt, Val E., Weber, Thomas C., Weirathmueller, Michelle   +5 more
core   +2 more sources

A Hierarchal Planning Framework for AUV Mission Management in a Spatio-Temporal Varying Ocean

, 2017
The purpose of this paper is to provide a hierarchical dynamic mission planning framework for a single autonomous underwater vehicle (AUV) to accomplish task-assign process in a limited time interval while operating in an uncertain undersea environment ...
Atyabi, Adham, Powers, David M. W, Sammut, Karl, Yazdani, Amir Mehdi, Zadeh, Somaiyeh Mahmoud.   +4 more
core   +1 more source

A Natural Language Interface with Relayed Acoustic Communications for Improved Command and Control of AUVs

, 2018
Autonomous underwater vehicles (AUVs) are being tasked with increasingly complex missions. The acoustic communications required for AUVs are, by the nature of the medium, low bandwidth while adverse environmental conditions underwater often mean they are
Garcia, Francisco J. Chiyah, Hastie, Helen, Laskov, Atanas, Liu, Xingkun, Patron, Pedro, Petillot, Yvan R., Robb, David A., Valeyrie, Nicolas, Willners, Jonatan Scharff   +8 more
core   +1 more source

A Markov Chain state transition approach to establishing critical phases for AUV reliability [PDF]

, 2011
The deployment of complex autonomous underwater platforms for marine science comprises a series of sequential steps. Each step is critical to the success of the mission. In this paper we present a state transition approach, in the form of a Markov chain,
Brito, Mario, Griffiths, Gwyn
core   +1 more source

GAT-ABiGRU Based Prediction Model for AUV Trajectory

Applied Sciences
Autonomous underwater vehicles (AUVs) are critical components of current maritime operations. However, because of the complicated marine environment, AUVs are at significant risk of being lost, and such losses significantly impact the continuity and ...
Mingxiu Zhao, Jing Zhang, Qin Li, Junzheng Yang, Estevao Siga, Tianchi Zhang   +5 more
doaj   +1 more source

Visual Navigation for Recovering an AUV by Another AUV in Shallow Water

Sensors, 2019
Autonomous underwater vehicles (AUVs) play very important roles in underwater missions. However, the reliability of the automated recovery of AUVs has still not been well addressed.
Shuang Liu, Hongli Xu, Yang Lin, Lei Gao
doaj   +1 more source

A Robust Model Predictive Control Approach for Autonomous Underwater Vehicles Operating in a Constrained workspace

, 2018
This paper presents a novel Nonlinear Model Predictive Control (NMPC) scheme for underwater robotic vehicles operating in a constrained workspace including static obstacles.
Heshmati-alamdari, Shahab, Karras, George C., Kyriakopoulos, Kostas J., Marantos, Panos   +3 more
core   +2 more sources

Collaborative Sampling and Imaging of Phytoplankton Communities by Two Long‐Range Autonomous Underwater Vehicles Using Acoustic Tracking and Messaging

Journal of Field Robotics, EarlyView.
ABSTRACT Collaborative operation of multiple autonomous underwater vehicles (AUVs) can effectively achieve scientific goals that are hard to achieve by independently operated vehicles. Some science payloads are large, expensive, and need to be installed in the vehicle's nose cone. A vehicle can only carry one such payload.
Yanwu Zhang, Brian Kieft, Monique Messié, Quinn Shemet, Brett W. Hobson, Paul Roberts, Brent Jones, Michael Anderson, Thom Maughan, Varsha Senthil   +9 more
wiley   +1 more source

On-Device Intelligence for AI-Enabled Bio-Inspired Autonomous Underwater Vehicles (AUVs)

IEEE Access
This paper introduces an innovative approach to underwater exploration by integrating Artificial Intelligence (AI) into Autonomous Underwater Vehicles (AUVs). This collaboration between AI and biomimicry marks a new era for AUVs, enabling them to emulate
Aryan Anand, M Yuva Bharath, Prabha Sundaravadivel, J. Preetha Roselyn, R. Annie Uthra   +4 more
doaj   +1 more source

Data-Gathering Scheme Using AUVs in Large-Scale Underwater Sensor Networks: A Multihop Approach

Sensors, 2016
In this paper, we propose a data-gathering scheme for hierarchical underwater sensor networks, where multiple Autonomous Underwater Vehicles (AUVs) are deployed over large-scale coverage areas.
Jawaad Ullah Khan, Ho-Shin Cho
doaj   +1 more source