Results 11 to 20 of about 18,758 (219)
Effects of Recreational Boats on Harbour Porpoise Swimming Speed and Surfacing Interval Investigated by Two Synchronised UAVs. [PDF]
Ecol EvolThis study examines the impact of speed and proximity of recreational boats on the swimming speed and surfacing interval of one of the most common coastal cetacean species, the harbour porpoise (Phocoena phocoena), using data collected by unmanned aerial vehicles (UAVs) in a key habitat for the vulnerable Belt Sea population.
Till J +4 more
europepmc +2 more sources
A Survey of Technologies for Unmanned Merchant Ships
IEEE Access, 2020 Unmanned merchant ships are ships that carry goods and engage in commercial activities without manual operations on board. In contrast to traditional merchant ships, unmanned merchant ships have great advantages in economy, society, and safety.
Jia Wang +3 more
doaj +1 more source
A Comparative Assessment of Collision Risk of Manned and Unmanned Vessels
Journal of Marine Science and Engineering, 2020 It is expected that the prototypes of unmanned merchant ships will be deployed in the next few years. However, there is no specific research on whether the introduction of unmanned ships will reduce the risk of ship collision accidents in which ...
Qing Wu +4 more
doaj +1 more source
PLoS ONE, 2023 Marine ships are the transport vehicle in the ocean and instance segmentation of marine ships is an accurate and efficient analysis approach to achieve a quantitative understanding of marine ships, for example, their relative locations to other ships or ...
Zequn Sun +4 more
doaj +2 more sources
Mathematics, 2022 This study aims to solve the problem of intelligent collision avoidance of unmanned ships at sea, and it proposes a novel driving strategy generating method of collision avoidance based on an extensive-form game mode with fuzzy credibility numbers.
Haotian Cui +4 more
doaj +1 more source
Nonlinear Engineering, 2022 Designing a safe, collision-free navigation route is critical for unmanned ships. This article applies the path planning method to the generation of collision avoidance paths for unmanned ships.
Wang Renqiang +4 more
doaj +1 more source
Towards the Development of a Risk Model for Unmanned Vessels Design and Operations [PDF]
TransNav, 2016 An unmanned merchant vessel seems to be escaping from the stage of idea exploration. Once the concept proofs its safety, it may become a part of maritime reality.
Krzysztof Wrobel +3 more
doaj +1 more source
ELECTRONIC THERMOSENSORS FOR UNMANNED SHIPS
Shipping & Navigation, 2022 The article deals with temperature sensors, the operation of which is based on the use of a change of voltage on a p-n junction of the semiconductor transistor at the set direct current. It sets out the theoretical justification for requirements for the structure of diodes and transistors used as temperature sensors.
S.A. Mikhailov, I.M. Vikulin
openaire +1 more source
Maritime coverage enhancement using UAVs coordinated with hybrid satellite-terrestrial networks [PDF]
, 2019 Due to the agile maneuverability, unmanned aerial vehicles (UAVs) have shown great promise for on-demand communications. In practice, UAV-aided aerial base stations are not separate.
Chen, Yunfei +4 more
core +2 more sources
An Active helideck testbed for floating structures based on a Stewart-Gough platform [PDF]
, 2008 A parallel robot testbed based on Stewart-Gough platform called Active-helideck is designed, developed and tested as a helicopter floating helideck. The objective of this testbed is to show the advantages of helicopters that use an active helideck upon ...
Aracil Santonja, Rafael +4 more
core +2 more sources