Results 21 to 30 of about 6,208,709 (224)

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

Multi-ship Coordinated Collision Avoidance Decision Based on Improved Twin Delayed Deep Deterministic Policy Gradient [PDF]

open access: yesJisuanji kexue, 2023
At present,most models of collision avoidance algorithms take ships as single agent to make collision avoidance decisions,without considering the coordinated avoidance between ships.In the scenario of multi-ship meeting,it will lead to poor avoidance ...
HUANG Renxian, LUO Liang, YANG Meng, LIU Weiqin
doaj   +1 more source

Assessment Method Based on AIS Data Combining the Velocity Obstacle Method and Pareto Selection for the Collision Risk of Inland Ships

open access: yesJournal of Marine Science and Engineering, 2022
A ship collision risk assessment model is an essential part of ship safety navigation. At present, the open water collision risk assessment model (such as the closest point of approach) is applied, but a ship collision risk model suitable for inland ...
Yan Wang   +3 more
doaj   +1 more source

Ship Intrusion Collision Risk Model Based on a Dynamic Elliptical Domain

open access: yesJournal of Marine Science and Engineering, 2023
To improve navigation safety in maritime environments, a key step is to reduce the influence of human factors on the risk assessment of ship collisions by automating the decision-making process as much as possible.
Weifeng Li   +3 more
doaj   +1 more source

A Collision Risk Identification Method for Autonomous Ships Based on Field Theory

open access: yesIEEE Access, 2021
Collision risk identification is necessary for autonomous ships to recognize the risk when facing different encounter situations and make the proper collision avoidance decision.
Zhenxing Qiao   +2 more
doaj   +1 more source

Identifying the Causes of Ship Collisions Accident Using Text Mining and Bayesian Networks

open access: yesElektronika ir Elektrotechnika, 2023
Under the backdrop of the robust growth of the global economy, the water transport industry is experiencing rapid development, resulting in an increase in ship collisions and a critical water traffic safety situation.
Jianguo Yu   +3 more
doaj   +1 more source

Collision Avoidance Decision Method for Unmanned Surface Vehicle Based on an Improved Velocity Obstacle Algorithm

open access: yesJournal of Marine Science and Engineering, 2022
To ensure navigation safety, unmanned surface vehicles (USVs) need to have autonomous collision avoidance capability. A large number of studies on ship collision avoidance are available, and most of these papers assume that the target ships keep straight
Yun Li, Haiyu Zhang
doaj   +1 more source

Risk Identification Method for Ship Navigation in the Complex Waterways via Consideration of Ship Domain

open access: yesJournal of Marine Science and Engineering, 2023
Collision risk identification is an important basis for intelligent ship navigation decision-making, which evaluates results that play a crucial role in the safe navigation of ships.
Zhiyuan Wang   +4 more
doaj   +1 more source

An Analytic Model for Identifying Real-Time Anchorage Collision Risk Based on AIS Data

open access: yesJournal of Marine Science and Engineering, 2023
With the increasing volume of ship traffic, maritime traffic safety is facing a great challenge because the traffic in port becomes more and more crowded and complicated, which will make ship collisions more likely to happen.
Zihao Liu   +4 more
doaj   +1 more source

Comparison study on AIS data of ship traffic behavior [PDF]

open access: yes, 2015
AIS (Automatic Identification System) data provides valuable input parameters in ship traffic simulation models for maritime risk analysis and the prevention of shipping accidents.
ligteringen, Han   +3 more
core   +1 more source

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