Results 21 to 30 of about 1,860 (185)

Cooperative navigation of cross-domain heterogeneous unmanned ship formation: recent advances and future trends

open access: yesZhongguo Jianchuan Yanjiu, 2022
Unmanned surface vessel (USV) based cross-domain heterogeneous formation cooperative navigation is an important method for overcoming the difficulties of navigation and positioning facing in the three areas of water surface, underwater and air in the ...
Bo XU, Zhaoyang WANG
doaj   +1 more source

Autonomous Obstacle Avoidance Algorithm for Unmanned Surface Vehicles Based on an Improved Velocity Obstacle Method

open access: yesISPRS International Journal of Geo-Information, 2021
Focusing on the collision avoidance problem for Unmanned Surface Vehicles (USVs) in the scenario of multi-vessel encounters, a USV autonomous obstacle avoidance algorithm based on the improved velocity obstacle method is proposed.
Jia Ren, Jing Zhang, Yani Cui
doaj   +1 more source

An overview of developments and challenges for unmanned surface vehicle autonomous berthing

open access: yesComplex & Intelligent Systems, 2023
With the continuous progress of contemporary science and technology and the increasing requirements for marine vehicles in various fields, the intelligence and automation of ships have become a general trend.
Gongxing Wu   +4 more
doaj   +1 more source

Development of a Hybrid Solar and Wind-Powered Long-Range Unmanned Ocean Stereo Exploration Vessel

open access: yesShanghai Jiaotong Daxue xuebao, 2021
Aimed at the problems of unmanned marine exploration vessels, such as the short voyage time and the limited sensing ability caused by sensor failure under complex marine environments, a long-range unmanned ocean-air stereo exploration vessel driven by ...
YAO Tiancheng   +6 more
doaj   +1 more source

Vision-Based Autonomous Landing of a Quadrotor on the Perturbed Deck of an Unmanned Surface Vehicle [PDF]

open access: yes, 2018
Autonomous landing on the deck of an unmanned surface vehicle (USV) is still a major challenge for unmanned aerial vehicles (UAVs). In this paper, a fiducial marker is located on the platform so as to facilitate the task since it is possible to retrieve ...
Manning, A   +4 more
core   +3 more sources

Trajectory Tracking of Underactuated Unmanned Surface Vessels: Non-Singular Terminal Sliding Control with Nonlinear Disturbance Observer

open access: yesApplied Sciences, 2022
An underactuated unmanned surface vessel (USV) is a nonholonomic system, in which trajectory tracking is a challenging problem that has drawn more and more attention from researchers recently.
Donghao Xu   +4 more
doaj   +1 more source

The angle guidance path planning algorithms for unmanned surface vehicle formations by using the fast marching method [PDF]

open access: yes, 2016
By deploying multiple USVs as a formation fleet, benefits such as wide mission area, improved system autonomy and increased fault-tolerant resilience can be achieved. To efficiently and effectively navigate the USV formation, path planning algorithms are
Bucknall, R, Liu, Y
core   +1 more source

Design and implementation of unmanned surface vessel long-distance communication system

open access: yesDianxin kexue, 2021
Unmanned surface vessel (USV) long-distance communication has important use in marine survey operations.The design and equipment development of USV long-distance communication system were carried out from both shore-side communication equipment and boat ...
Xue LI   +5 more
doaj   +2 more sources

Finite Time Trajectory Tracking with Full-State Feedback of Underactuated Unmanned Surface Vessel Based on Nonsingular Fast Terminal Sliding Mode

open access: yesJournal of Marine Science and Engineering, 2022
Marine transportation and operations have attracted the attention of more and more countries and scholars in recent years. A full-state finite time feedback control scheme is designed for the model parameters uncertainty, unknown ocean environment ...
Donghao Xu   +3 more
doaj   +1 more source

Adapting to Changes in Design Requirements Using Set‐Based Design [PDF]

open access: yes, 2011
Ship design is a highly intensive and complex process mainly due to the large number of components and competing requirements. With advancement in technology, design, and evaluation processes, more emphasis has been placed on obtaining not just a ...
Kemink, Lauren F.   +2 more
core   +1 more source

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