Results 71 to 80 of about 794,446 (201)

Analysis of causation of loss of communication with marine autonomous systems: a probability tree approach [PDF]

open access: yes, 2014
The last decade has seen the eagerly anticipated introduction of marine autonomous systems as a pragmatic tool for ocean observation. However, outstanding reliability problems means that these vehicles are not yet fulfilling their true potential.
Brito, M.P., Griffiths, G., Smeed, D.A.
core   +1 more source

Simulation Analysis of Variable Cross-section Linetype Optimization for Swim-out Tube in UUVs

open access: yes水下无人系统学报
In order to design the swim-out launcher unit for unmanned undersea vehicle(UUV), based on the thrust model and force model of swim-out launch process for electric torpedoes, the paper analyzes the thrust, fluid resistance, course resistance, and local ...
Jie ZHOU, Liang MA, Hui HENG
doaj   +1 more source

The Research on Military‐Retrieval‐Augmented Generation Question Answering System Based on MiliGNER

open access: yesCognitive Computation and Systems, Volume 8, Issue 1, January/December 2026.
ABSTRACT With the rapid development of large language models, generative named entity recognition and retrieval‐augmented generation have opened new methodological pathways for intelligent question answering in specialised domains. To address the characteristics of military texts, including complex entity naming, tightly coupled attribute dependencies ...
Jiaqi Zhang, Ruicong Zhi
wiley   +1 more source

A numerical study on hydrodynamic maneuvering derivatives for heave-pitch coupling motion of a ray-type underwater glider

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2020
We used a numerical method to estimate the hydrodynamic maneuvering derivatives for the heave-pitch coupling motion of an underwater glider. It is very important to assess the hydrodynamic maneuvering characteristics of a specific hull form of an ...
Sungook Lee   +3 more
doaj   +1 more source

Evaluating SOFC-based Power System Concepts for Unmanned Undersea Vehicles [PDF]

open access: yesECS Transactions, 2009
System concepts for powering an unmanned undersea vehicle (UUV) with a solid oxide fuel cell (SOFC) power generator are developed and evaluated through modeling studies of variations in system configurations and design parameters. System concepts that meet the continuous electrical loads for sustained operations and mission selectable capabilities for
Robert Braun, Kyle Kattke
openaire   +1 more source

Navigation of an Autonomous Underwater Vehicle for Shortest Time Sensor Data Collection

open access: yesIET Control Theory &Applications, Volume 20, Issue 1, January/December 2026.
This paper addresses the problem of navigation of an autonomous underwater vehicle (AUV) for effective sensor data collection from an underwater sensor network. The AUV is launched from an unmanned surface vehicle (USV) located at some sea surface point, collects sensor data, and then arrives at the same USV at some other sea surface point.
Andrey V. Savkin   +2 more
wiley   +1 more source

Underwater Target Search and Tracking Based on Air-Sea Heterogeneous Unmanned Platform

open access: yes水下无人系统学报
The marine heterogeneous unmanned systems can effectively enhance the implementation efficiency of complex missions. In this paper, autonomous undersea vehicles(AUVs) and unmanned aerial vehicles(UAVs) were used for searching and tracking unknown ...
Wenjun DING   +4 more
doaj   +1 more source

Towards Efficient Data Collection in Internet of Underwater Things: A Review on Routing Techniques, Acoustic Modems and Simulation Tools

open access: yesIET Wireless Sensor Systems, Volume 16, Issue 1, January/December 2026.
This work reviews the various data collection mechanisms in underwater acoustic sensor networks, focusing on multi‐hop routing and AUV‐assisted approaches. It also evaluates the capabilities of acoustic modems and simulation tools available to replicate real‐world underwater scenarios.
Dhivya Bharathi R   +1 more
wiley   +1 more source

Reconfigurable unmanned aerial vehicles

open access: yes, 2009
Unmanned Aerial Vehicles (UAVs) have been developing dramatically due to wars and miniaturisation of technology, which has made the UAV industry a very lucrative business. Research organisations have been funded by various research committees or military
Barlow, Chris   +5 more
core   +1 more source

Weaponising the Supply Chain: Yemen's Blockade and the Contradictions of Maritime Logistics Capital

open access: yesAntipode, Volume 58, Issue 1, January 2026.
Abstract This paper examines the 2023–2025 naval blockade imposed by Yemen in the Red Sea. It argues that the blockade's success in disrupting global trade stemmed from the potent confluence of asymmetric military tactics and the structural vulnerabilities inherent within global maritime logistics capitalism.
Ashok Kumar
wiley   +1 more source

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