Results 51 to 60 of about 193 (172)

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

Derivation of New Orthonormal Basis Functions for Magnetic Detection of Submarine Telecommunications Cables

open access: yesIET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
This paper presents the first orthonormal basis function (OBF) framework adapted for passive magnetic detection of DC current‐carrying submarine telecommunications cables, extending Anderson's dipole‐based approach to cable‐like source configurations. Two orthonormal basis functions are derived from the Biot‐Savart law and integrated into a generalised
Khaled Hleis   +3 more
wiley   +1 more source

AI‐Driven Intelligent and Explainable SONAR for Underwater Acoustic Sensing

open access: yesIET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
This review surveys recent advances in AI‐driven enhancement and interpretation of LOFAR spectra for underwater acoustic sensing. It examines deep learning, transformer‐based models, explainable AI and emerging large language models for intelligent SONAR analysis and highlights current challenges and future research directions towards autonomous ...
Shumaila Javaid   +3 more
wiley   +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

Multi-UUV Collaborative Bearing-only Target Tracking Based on Boundary Constrained Particle Filter

open access: yes水下无人系统学报
Due to the difficulties of filter initialization and packet loss in underwater acoustic data transmission faced by existing bearing-only target tracking algorithms, a multi-unmanned undersea vehicle(UUV) collaborative bearing-only target tracking ...
Bo HAN   +4 more
doaj   +1 more source

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