Results 41 to 50 of about 5,659,605 (213)

A Multi-Layered Potential Field Method for Water-Jet Propelled Unmanned Surface Vehicle Local Path Planning with Minimum Energy Consumption

Polish Maritime Research, 2019
Focusing on the influence of wind and surface currents on local path planning in the marine environment, a multilayered potential field (MPF) method is proposed to minimize the energy consumption of a water-jet propelled unmanned surface vehicle (USV). A
Wang Shasha, Fu Mingyu, Wang Yuanhui, Zhao Liangbo   +3 more
doaj   +1 more source

Use of Unmanned Surface Vehicles (USVs) in Water Chemistry Studies

Sensors
Unmanned surface vehicles (USVs) equipped with integrated sensors are a tool valuable to several monitoring strategies, offering enhanced temporal and spatial coverage over specific timeframes, allowing for targeted examination of sites or events of interest.
Georgios Katsouras, Elias Dimitriou, Sotirios Karavoltsos, Stylianos Samios, Aikaterini Sakellari, Angeliki Mentzafou, Nikolaos Tsalas, Michael Scoullos   +7 more
openaire   +5 more sources

A low-cost wave/solar powered unmanned surface vehicle [PDF]

, 2020
This paper presents a prototype of a low-cost Unmanned Surface Vehicle (USV) that is operated by wave and solar energy which can be used to minimize the cost of ocean data collection. The current prototype is a compact USV, with a length of 1.2m that can
Elkolali, Moustafa, Jenkins, Andrew, Lennard Much, Al-Tawil, Ahmed, Alcocer, Alex, Much, Lennard, Alex Alcocer, Masset, Olivier, Alonso, Sara, Sayols, Marina, Olivier Masset, Ahmed Al-Tawil, Andrew Jenkins, Marina Sayols, Schrader, Ryan, Moustafa Elkolali, Sara Alonso, Carella, Alfredo, Alfredo Carella, Ryan Schrader   +19 more
core   +1 more source

Autonomous Water Sampling System and Experiment Based on the Unmanned Surface Vehicle

, 2021
Water pollution is always the worldwide key problem. For the problem of complex, frequent and dangerous water sampling and monitoring missions in the various water areas, this paper designs an autonomous water sampling system based on the unmanned ...
He YQ(何玉庆), Li DC(李德才), Zhang MW(张梦巍), Xiong JF(熊俊峰), Li, Zhi, Xiong, Chunhong   +5 more
core   +1 more source

Remarks on the Application of Multi-Layer Extreme Learning Machines for Controlling an Autonomous Unmanned Vehicle

Engineering Proceedings
We investigated the potential of multi-layer extreme learning machines (MLELMs) for trajectory tracking in autonomous unmanned vehicles, focusing on an unmanned surface vehicle (USV).
Kazuhiko Takahashi, Yuta Imamura, Masafumi Hashimoto   +2 more
doaj   +1 more source

The Autonomous Underwater Vehicle Integrated with the Unmanned Surface Vessel Mapping the Southern Ionian Sea. The Winning Technology Solution of the Shell Ocean Discovery XPRIZE

Remote Sensing, 2020
The methods of data collection, processing, and assessment of the quality of the results of a survey conducted at the Southern Ionian Sea off the Messinian Peninsula, Greece are presented.
Karolina Zwolak, Rochelle Wigley, Aileen Bohan, Yulia Zarayskaya, Evgenia Bazhenova, Wetherbee Dorshow, Masanao Sumiyoshi, Seeboruth Sattiabaruth, Jaya Roperez, Alison Proctor, Craig Wallace, Hadar Sade, Tomer Ketter, Benjamin Simpson, Neil Tinmouth, Robin Falconer, Ivan Ryzhov, Mohamed Elsaied Abou-Mahmoud   +17 more
doaj   +1 more source

A validated 3D point‐cloud analysis workflow for the creation of seagrass canopy height models

Methods in Ecology and Evolution, EarlyView.
Abstract Seagrasses support highly productive ecosystems in both temperate and tropical waters and provide essential ecosystem services. Despite their importance, the vertical structure of seagrasses (i.e. the canopy) remains poorly characterised at the microscale, even though it is a strong predictor of ecological processes that influence both ...
Daniele Ventura
wiley   +1 more source

Transformer: A Multifunctional Fast Unmanned Aerial Vehicles–Unmanned Surface Vehicles Coupling System

Machines, 2021
With the continuous development of the maritime economy, the maritime unmanned surface vehicles (USVs) and unmanned aerial vehicles (UAVs) have become important parts of the maritime transportation system.
Mingzhang Chen, Xuancheng Zhang, Xiaoshuang Xiong, Fanfei Zeng, Wuhao Zhuang   +4 more
doaj   +1 more source

eDNA Collected by Custom‐Built Unmanned Surface Vehicles (USVs) Reveals Spatio‐Temporal Shifts in Tropical Coral Reef Faunal Communities

Environmental DNA, Volume 8, Issue 4, July‐August 2026.
Self‐constructed Unmanned Surface Vehicles were deployed at coral reefs on Reunion Island to capture environmental DNA (eDNA), identifying changes in animal communities depending on the time of day and sampling station. These findings suggest specific sites for high‐frequency, long‐term eDNA monitoring using low‐cost mobile devices.
Dominique A. Cowart, Thomas Chevrier, Anne‐Elise Nieblas, Jérémie Chanut, Mervyn Ravitchandirane, Victor Illien, Magali Duval, Serge Bernard, Sylvain Bonhommeau   +8 more
wiley   +1 more source

Multi-Objective Nonlinear Model Predictive Control for Tethered USV-ROV Cooperative Tracking and Dynamic Obstacle Avoidance

Journal of Marine Science and Engineering
Tethered unmanned surface vehicle (USV) and remotely operated vehicle (ROV) systems are widely used in deep-sea inspection, observation, and intervention tasks.
Guochang Zhang, Qinglong Zhao, Sen Cheng, Qianhui Dong, Shuochen Han, Haitao Zhu, Yanyan Wang   +6 more
doaj   +1 more source