Results 41 to 50 of about 2,129 (204)

A Dynamic Obstacle Avoidance Method for Unmanned Surface Vehicle under the International Regulations for Preventing Collisions at Sea

open access: yesJournal of Marine Science and Engineering, 2022
A new method is proposed for the dynamic obstacle avoidance problem of unmanned surface vehicles (USVs) under the international regulations for preventing collisions at sea (COLREGs), which applies the particle swarm optimization algorithm (PSO) to the ...
Diju Gao   +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

Development of Evaluation Procedures for Watchkeeping Officers Using Bridge Simulator [PDF]

open access: yesTransNav, 2020
A comprehensive assessment of watchkeeping officers should be considered as a preventive measure in terms of safety of navigation. Watchkeeping officers are assigned after passing exams of state authorities and various evaluation procedures of companies.
Murat Selçuk Solmaz   +3 more
doaj   +1 more source

Comparative Analysis of the Usefulness of AIS and ARPA for Anti-collision Purposes [PDF]

open access: yesTransNav, 2020
The article discusses the principles of presenting data available from AIS and radar tracking on ship's radar display units and describes the results of comparative studies of the accuracy of their indications on sea-going vessels in real meeting ...
Ryszard Wawruch
doaj   +1 more source

Are object detection assessment criteria ready for maritime computer vision? [PDF]

open access: yes, 2019
Maritime vessels equipped with visible and infrared cameras can complement other conventional sensors for object detection. However, application of computer vision techniques in maritime domain received attention only recently.
Dong, Huixu   +3 more
core   +2 more sources

Self-Positioning Smart Buoys, The \u27Un-Buoy\u27 Solution: Logistic Considerations Using Autonomous Surface Craft Technology and Improved Communications Infrastructure [PDF]

open access: yes, 2006
Moored buoys have long served national interests, but incur high development, construction, installation, and maintenance costs. Buoys which drift off-location can pose hazards to mariners, and in coastal waters may cause environmental damage.
Ballou, Phil   +7 more
core   +2 more sources

A Simulative Comparison of Ship Domains and Their Polygonal Approximations [PDF]

open access: yesTransNav, 2015
The paper investigates the impact of a precise ship domain shape on the size of collision avoidance manoeuvres. The considered collision avoidance manoeuvres include both course and speed alterations.
Rafal Szlapczynski, Joanna Szlapczynska
doaj   +1 more source

Study Reliability of the Information About the CPA and TCPA Indicated by the Ship's AIS [PDF]

open access: yesTransNav, 2016
According to the IMO recommendation when the target data from AIS and radar tracking are both available and the association criteria are fulfilled such that the AIS and radar information are considered as for one physical target, then as a default ...
Ryszard Wawruch
doaj   +1 more source

EDA: New System for Improving Navigation Standards (Totem Plus) [PDF]

open access: yesTransNav, 2017
EDA is a tool for auditing vessel?s performance that helps installing strict safety navigation standards on ships. The practice of investigating every near-miss event is common in aviation, but unheard of in the maritime industry. At the same time, major
Azriel Rahav
doaj   +1 more source

A multi-layered fast marching method for unmanned surface vehicle path planning in a time-variant maritime environment [PDF]

open access: yes, 2017
Concerns regarding the influence of the marine environment, such as surface currents and winds, on autonomous marine vehicles have been raised in recent years.
Bucknall, R, Liu, Y, Song, R
core   +1 more source

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