Results 51 to 60 of about 1,121,138 (161)

Research on the Combined Detection of Magnetic Anomaly and Shaft‐Rate Magnetic Field Signals

IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.
Magnetic anomaly signal, shaft‐rate magnetic field signal, combined detection. ABSTRACT Due to the stable propagation of magnetic signals in ocean and air, magnetic detection technology has become an effective means for nonacoustic detection. The magnetic anomaly signal and shaft‐rate magnetic signal radiated by underwater vehicles are currently the ...
Honglei Wang, Chunxu Jiang, Zhixiang Feng   +2 more
wiley   +1 more source

Autonomous Underwater Pipe Damage Detection Positioning and Pipe Line Tracking Experiment with Unmanned Underwater Vehicle

Journal of Marine Science and Engineering
Underwater natural gas pipelines constitute critical infrastructure for energy transportation. Any damage or leakage in these pipelines poses serious security risks, directly threatening marine and lake ecosystems, and potentially causing operational ...
Seda Karadeniz Kartal, Recep Fatih Cantekin   +1 more
doaj   +1 more source

Position, Orientation and Velocity Detection of Unmanned Underwater Vehicles (UUVs) Using an Optical Detector Array

Sensors, 2017
This paper presents a proof-of-concept optical detector array sensor system to be used in Unmanned Underwater Vehicle (UUV) navigation. The performance of the developed optical detector array was evaluated for its capability to estimate the position ...
Firat Eren, Shachak Pe’eri, May-Win Thein, Yuri Rzhanov, Barbaros Celikkol, M. Robinson Swift   +5 more
doaj   +1 more source

Formation control of unmanned underwater vehicles using local sensing means in absence of follower position information

International Journal of Advanced Robotic Systems, 2021
Formation control is one of the essential problems in multi-unmanned underwater vehicle (UUV) coordination. In this article, a practically oriented UUV formation control structure and method are proposed for the problem of large communication in leader ...
Zheping Yan, Da Xu, Tao Chen, Jiajia Zhou   +3 more
doaj   +1 more source

Pose‐graph underwater simultaneous localization and mapping for autonomous monitoring and 3D reconstruction by means of optical and acoustic sensors

Journal of Field Robotics, Volume 41, Issue 8, Page 2543-2563, December 2024.
Abstract Modern mobile robots require precise and robust localization and navigation systems to achieve mission tasks correctly. In particular, in the underwater environment, where Global Navigation Satellite Systems cannot be exploited, the development of localization and navigation strategies becomes more challenging.
Alessandro Bucci, Alessandro Ridolfi, Benedetto Allotta   +2 more
wiley   +1 more source

Design of Unmanned Underwater Vehicle as Observation Facility Using Computational Fluid Dynamics Analysis [PDF]

, 2019
Unmanned Underwater Vehicle (UUV) technology that still developing at this time allowing underwater observation with unmanned vehicle. The challenge in designing a UUV is how the UUV can dive and float with wings (airfoil) as a diving system that gives ...
Suwasono, Bagiyo, Hardianto, Didik, Munazid, Ali   +2 more
core  

Head Horn Enhances Hydrodynamic Perception in Eyeless Cavefish

Advanced Science, Volume 11, Issue 44, November 26, 2024.
Blind Chinese cavefish have evolved a unique head horn structure, which is a convergent feature in the eyesight‐reduced cavefish species. In this work, the structure‐function relationships of this specific head horn structure are systemically investigated, adequately revealing that it can enhance hydrodynamic perception and facilitate underwater ...
Zhiqiang Ma, Zheng Gong, Yonggang Jiang, Peng Wu, Changxin You, Zihao Dong, Hongchao Cao, Zhen Yang, Yahui Zhao, Huawei Chen, Deyuan Zhang   +10 more
wiley   +1 more source

UUV Cluster Distributed Navigation Fusion Positioning Method with Information Geometry

Journal of Marine Science and Engineering
The development and utilization of marine resources by humanity are increasing rapidly, and a single unmanned underwater vehicle (UUV) is insufficient to meet the demands of ocean exploitation.
Lingling Zhang, Shijiao Wu, Chengkai Tang, Hechen Lin   +3 more
doaj   +1 more source

Dual‐state and self‐oscillating wireless charging system topology for direct‐drive battery

IET Power Electronics, Volume 17, Issue 15, Page 2498-2514, 25 November 2024.
A novel topology with bi‐stable controlling for wireless charging system is proposed. The innovation of this method lies in treating the coupler as a current transformer, which enables more direct and simpler controlling of the charging current. The advantages of the proposal are that a desired charging current can be directly output from rectifier ...
Bo Li, Bao Zhang, Kai Xie
wiley   +1 more source

Simultaneous Mapping and Localisation for Small Military Unmanned Underwater Vehicle [PDF]

, 2012
Paper proposes a simultaneous localisation and mapping (SLAM) scheme which is applicable to small military unmanned underwater vehicles (UUVs). The SLAM is a process which enables concurrent estimation of the position of UUV and landmarks in the ...
Hwang, Arom, Seong, Woojae
core   +1 more source