Results 21 to 30 of about 304,128 (233)

Effective Ship Domains Considering Ship Encounter Situations and Speeds

open access: yesJournal of Physics: Conference Series, 2022
Abstract Ship domain is an important concept in assessing navigation situation and planning collision avoidance manoeuvres of a ship. For purpose of improving the precision and adaptability of the ship domains, effective ship domains are proposed for ships with different speeds in a variety of encounter situations in this work.
Shujie Yang, Wei Sun
openaire   +1 more source

SASD Modeling Using an ANFIS to Prevent the Collision of MASS in Restricted Areas

open access: yesJournal of Marine Science and Engineering, 2022
This study aimed to present the criteria for the collision avoidance of maritime autonomous surface ships (MASS) in restricted areas. The criteria were presented via ship domains, and a seafarers’ awareness-based ship domain (SASD) that dynamically ...
Hee-Jin Lee, Deuk-Jin Park
doaj   +1 more source

Situational Awareness in Autonomous Shipping – Ship Domain in Remote MASS Operation [PDF]

open access: goldTransNav, the International Journal on Marine Navigation and Safety of Sea Transportation
Teresa Abramowicz-Gerigk   +1 more
openaire   +2 more sources

Collision Risk Index Calculation Based on an Improved Ship Domain Model

open access: yesJournal of Marine Science and Engineering, 2022
The traditional ship collision risk index model based on the distance at the closest point of approach (DCPA) and the time to the closest point of approach (TCPA) is insufficient for estimating ship collision risk and planning collision avoidance ...
Weifeng Li   +3 more
doaj   +1 more source

Collision avoidance path planning of tourist ship based on DDPG algorithm

open access: yesZhongguo Jianchuan Yanjiu, 2021
ObjectiveSailling saftey is the chief matter for ship navigation, supposing that collision avoidance operation is heavily dependent on the captain's performance or judgement, it would pose potential risks to the ship safety.
Yi ZHOU   +3 more
doaj   +1 more source

Ship collision risk calculation method considering uncertainty of ship position prediction

open access: yesZhongguo Jianchuan Yanjiu, 2021
ObjectivesShip collision is one of the main factors threatening the navigation safety of intelligent ships. A calculation model of ship collision risk should identify potential collision risks in time and provide the basic information for the intelligent
Shaobo WANG, Yingjun ZHANG, Xin HU
doaj   +1 more source

3D domain decomposition for violent wave‐ship interactions [PDF]

open access: yesInternational Journal for Numerical Methods in Engineering, 2013
SUMMARYA 3D Domain‐Decomposition (DD) strategy has been developed to deal with violent wave‐ship interactions involving water‐on‐deck and slamming occurrence. It couples a linear potential flow seakeeping solver with a Navier–Stokes method. The latter is applied in an inner domain where slamming, water‐on‐deck, and free surface fragmentation may occur,
Greco M   +3 more
openaire   +5 more sources

A real-time ship encounter collision risk detection approach in close-quarters situation

open access: yesMeasurement + Control, 2023
In order to identify ship collision risk for the security of maritime transportation in a close-quarters situation, a novel real-time ship collision risk awareness approach is proposed by developing a novel non-linear velocity obstacle set, QSD-NLVO ...
Bowen Sui, Jianqiang Zhang, Zhong Liu
doaj   +1 more source

A Multi-Domain Joint Novel Method for ISAR Imaging of Multi-Ship Targets

open access: yesRemote Sensing, 2023
As a key object on the ocean, regulating civilian and military ship targets more effectively is a very important part of maintaining maritime security.
Yangyang Zhang   +3 more
doaj   +1 more source

Multi-ship Encounter Situation Analysis with the Integration of Elliptical Ship Domains and Velocity Obstacles [PDF]

open access: yesTransNav, 2023
With economic globalization, ships tend to be larger and faster, and the volume of maritime traffic is increasing. Ships sailing in waters with dense traffic flow are easy to fall into complicated multi-ship encounter situations and have a high risk of ...
Zhaoxi Cheng   +3 more
doaj   +1 more source

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