Results 51 to 60 of about 3,596 (221)

Mapping River Bed Topography in Whitewater Rapids Using Bathymetric LiDAR

River Research and Applications, Volume 42, Issue 4, Page 886-900, May 2026.
ABSTRACT Bathymetric LiDAR captures river topography efficiently for clear and shallow water, but for mountain rivers, whitewater rapids still pose challenges. This study proposes a novel method to enable the extraction of bottom returns specifically in turbulent whitewater sections.
Jan Rhomberg‐Kauert, Theresa Himmelsbach, Florian Pöppl, Lucas Dammert, Martin Pfennigbauer, Gottfried Mandlburger   +5 more
wiley   +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

Non-linear control algorithms for an unmanned surface vehicle [PDF]

, 2013
Although intrinsically marine craft are known to exhibit non-linear dynamic characteristics, modern marine autopilot system designs continue to be developed based on both linear and non-linear control approaches.
Annamalai, A, Motwani, A, Sharma, SK, Sutton, R   +3 more
core   +2 more sources

Prioritized Real‐Time UAV‐Based Vessel Detection for Efficient Maritime Search

Journal of Field Robotics, Volume 43, Issue 2, Page 561-577, March 2026.
ABSTRACT Real‐time vessel detection in maritime environments is crucial for diverse applications requiring speed and accuracy. Static camera views often introduce blind spots, compromising detection efficiency. This paper proposes a novel, real‐time UAV‐based system that uses a dynamic camera control strategy to address this limitation.
Lyes Saad Saoud, Zikai Jia, Siyuan Yang, Muhayy Ud Din, Lakmal Seneviratne, Shaoming He, Irfan Hussain   +6 more
wiley   +1 more source

Actual water volume assessment in a watershed via the surface drone

Мелиорация и гидротехника
Purpose: is to assess the actual water volumes in water objects (reservoirs, lakes, ponds) to identify the degree of maximum anthropogenic load, namely, the pollutant release. Materials and methods.
Nikolai O. Naumenko, Margarita A. Shiryaeva, Nartmir V. Khanov   +2 more
doaj   +1 more source

Numerical study of a novel small waterplane area USV advancing in calm water and in waves using the higher-order Rankine source method

Engineering Applications of Computational Fluid Mechanics, 2023
The wave loads and motion responses of an Unmanned Surface Vehicle (USV) in water will directly influence the powering requirement, energy supply design and function of the installed sensors.
Gong Xiang, Xianbo Xiang, Raju Datla
doaj   +1 more source

Real‐Time Detection and Prevention of DoS Attack in Unmanned Marine Vehicles Using Machine Learning

SECURITY AND PRIVACY, Volume 9, Issue 2, March/April 2026.
ABSTRACT Unmanned marine vehicles (UMVs) are one of the most crucial components of the underwater communication and surveillance system in the marine and oceanographic environment. This research introduces a novel approach to stabilize the connection in an unstable underwater environment by inheriting features of communication velocities.
Noman Ali, Yousaf Saeed, Muhammad Ibrahim, Muhammad Bilal, Muhammad Tahir, Muhammad Aslam, Edore Akpokodje, Syeda Fizzah Jilani, Meng Tang   +8 more
wiley   +1 more source

Estimation of Fluctuation Characterizations by USV-Operation Simulations in Sea State 3

Modelling and Simulation in Engineering, 2017
This paper proposes a method based on simulation techniques for fluctuation characterizations of unmanned surface vehicle (USV) operations under Sea State 3.
Jae-Han Park, Ji-Hun Bae, Moon-Hong Baeg
doaj   +1 more source

Dynamic Path Planning Of Unmanned Surface Vehicle Based On Genetic Algorithm With Sliding Curve Guidance System

JAREE (Journal on Advanced Research in Electrical Engineering), 2021
Unmanned Surface Vehicle (USV) is an unmanned ship that is controlled through a remote control system (manual) or automatic control system (autopilot), move due to the thrust force from thruster machine and can turning due to the deflection angle of ...
Rusdhianto Effendie Abdul Kadir, Mochammad Sahal, Nurlita Gamayanti, Fian Ilham Pratama   +3 more
doaj   +1 more source

Adaptive Sliding Mode Path Tracking Control for an Underactuated Unmanned Surface Vehicle Based on a Disturbance Observer

IET Intelligent Transport Systems, Volume 20, Issue 1, January/December 2026.
This paper proposes a composite control strategy combining a disturbance observer (DOB) and an adaptive sliding‐mode controller (ASMC) to enhance the path‐tracking performance of underactuated unmanned surface vehicles. The DOB actively compensates for environmental disturbances while the ASMC handles model uncertainties, with simulations demonstrating
Li Yang, Bao Changchun
wiley   +1 more source