Results 31 to 40 of about 62,073 (218)

Distributed Consensus of USVs under Heterogeneous UAV-USV Multi-Agent Systems Cooperative Control Scheme

open access: yesJournal of Marine Science and Engineering, 2021
This paper addresses the formation motion control of heterogeneous multi-agent unmanned systems via a distributed consensus approach. The considered heterogeneous system consisted of unmanned aerial vehicles (UAVs) and unmanned surface vehicles (USVs). A
Kai Xue, Tingyi Wu
doaj   +1 more source

Autonomous Marine Vehicle Operations—2nd Edition

open access: yesJournal of Marine Science and Engineering
In recent years, the field of autonomous marine vehicles has undergone remarkable advancements, with unmanned surface vehicles (USVs) and unmanned underwater vehicles (UUVs) demonstrating transformative potential for oceanographic exploration and marine ...
Xiao Liang, Rubo Zhang, Xingru Qu
doaj   +1 more source

Automated identification of river hydromorphological features using UAV high resolution aerial imagery [PDF]

open access: yes, 2015
European legislation is driving the development of methods for river ecosystem protection in light of concerns over water quality and ecology. Key to their success is the accurate and rapid characterisation of physical features (i.e., hydromorphology ...
Ballesteros Gonzalez, Rocio   +3 more
core   +2 more sources

Adaptive State Feedback Shared Control for Unmanned Surface Vehicle With Fixed-Time Prescribed Performance Control

open access: yesIEEE Access
Unmanned surface vehicles (USVs) often encounter unknown obstacles, adverse weather, and emergency situations during missions, especially external disturbances such as wind, waves, and ocean currents at sea, which pose challenges for operators to respond
Mengyue He   +5 more
doaj   +1 more source

A Survey on Unmanned Underwater Vehicles: Challenges, Enabling Technologies, and Future Research Directions

open access: yesSensors, 2023
Unmanned underwater vehicles (UUVs) are becoming increasingly important for a variety of applications, including ocean exploration, mine detection, and military surveillance. This paper aims to provide a comprehensive examination of the technologies that
Arif Wibisono   +3 more
doaj   +1 more source

Towards of multi-source data fusion framework of geo-referenced and non-georeferenced data: prospects for use in surface water bodies

open access: yesGeocarto International, 2023
This paper proposes an approach of fusion geo-referenced and non-georeferenced data. These data can be acquired by a) unmanned surface vehicles (USVs), b) unmanned aerial vehicles (UAVs), c) airborne and submersible optical sensors, d) acoustic sensors ...
Fermín Villalpando   +3 more
doaj   +1 more source

Design and analysis of an unmanned small-scale air-land-water vehicle [PDF]

open access: yes, 2013
The designs of small-scale unmanned aerial, land and water vehicles are currently being researched in both civilian and military applications. However, these unmanned vehicles are limited to only one and two mode of operation.
Arhami, Arhami
core  

Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection

open access: yesAdvanced Materials, EarlyView.
Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel   +7 more
wiley   +1 more source

MXene‐Coated 3D Printed Horn Antennas for Ku Frequency Band

open access: yesAdvanced Materials Technologies, EarlyView.
An additive manufacturing approach to 3D printing horn antennas and coating them with Ti3C2Tx MXene is proposed. Rapid fabrication of lightweight, high‐performance antennas operating in the Ku‐band (12.4–18 GHz) has been demonstrated. The MXene‐coated antennas exhibit comparable electromagnetic performance to conventional, costly aluminum ones, with ...
Zahra Sarpanah Sourkouhi   +3 more
wiley   +1 more source

Multifunctional Inshore Survey Platform with Unmanned Surface Vehicles

open access: yesInternational Journal of Automation and Smart Technology, 2011
Because of extreme weather and frequent natural disasters, improvement of disaster prevention capabilities and early warning technologies is an urgent matter.
Wen-Rong Yang   +4 more
doaj   +1 more source

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