Results 21 to 30 of about 3,532,261 (141)

Ship Collision Avoidance Decision Model and Simulation Based on Collision Circle [PDF]

TransNav, 2019
In order to give consideration to both comprehensive evaluation and efficient decision-making in collision avoidance decision-making process, a collision avoidance decision-making model based on collision circle is proposed by introducing the concept of ...
Jifeng Zhang, Qinyou Hu, Bingjun Liao
doaj   +1 more source

Collision-Avoidance Decision System for Inland Ships Based on Velocity Obstacle Algorithms

Journal of Marine Science and Engineering, 2022
Due to the complex hydrology and narrow channels of inland rivers, ship collision accidents occur frequently. The traditional collision-avoidance algorithms are often aimed at sea areas, and not often at inland rivers. To solve the problem of inland-ship
Guangyu Zhang, Yan Wang, Jian Liu, Wei Cai, Hongbo Wang   +4 more
doaj   +1 more source

Collision avoidance for autonomous ship using deep reinforcement learning and prior-knowledge-based approximate representation

Frontiers in Marine Science, 2023
Reinforcement learning (RL) has shown superior performance in solving sequential decision problems. In recent years, RL is gradually being used to solve unmanned driving collision avoidance decision-making problems in complex scenarios.
Chengbo Wang, Chengbo Wang, Xinyu Zhang, Xinyu Zhang, Zaili Yang, Musa Bashir, Kwangil Lee   +6 more
doaj   +1 more source

Collision Avoidance Algorithm for USV Based on Rolling Obstacle Classification and Fuzzy Rules

Journal of Marine Science and Engineering, 2021
Dynamic collision avoidance between multiple vessels is a task full of challenges for unmanned surface vehicle (USV) movement, which has high requirements on real-time performance and safety.
Lifei Song, Xiaoqian Shi, Hao Sun, Kaikai Xu, Liang Huang   +4 more
doaj   +1 more source

Intelligent Dynamic Collision Avoidance Strategy of Hydrogen Fuel Cell Unmanned Ship via Improved Fusion Dynamic Window Method

IEEE Access, 2023
In this study, a novel fusion dynamic window method is proposed. The safety field obstacle model of obstacle ships is explored to improve the obstacle collection of speed obstacle method, so that the collision avoidance process of Hydrogen Fuel Cell ...
Zimin Wang
doaj   +1 more source

Ship Collision Avoidance Based on the Vulnerability Assessment for Small Vessels in Bad Weather

IEEE Access, 2023
In the conditions of bad weather, the small vessels maneuvering ability of collision avoidance is seriously reduced and the vulnerability to maritime accidents increases due to the influence of strong wind and wave.
Hu Yancai, Wang Mingyu, Liu Yang
doaj   +1 more source

Dynamic Obstacle Avoidance for Unmanned Underwater Vehicles Based on an Improved Velocity Obstacle Method

Sensors, 2017
In view of a dynamic obstacle environment with motion uncertainty, we present a dynamic collision avoidance method based on the collision risk assessment and improved velocity obstacle method.
Wei Zhang, Shilin Wei, Yanbin Teng, Jianku Zhang, Xiufang Wang, Zheping Yan   +5 more
doaj   +1 more source

Autonomous Collision avoidance for Unmanned aerial systems [PDF]

, 2014
Unmanned Aerial System (UAS) applications are growing day by day and this will lead Unmanned Aerial Vehicle (UAV) in the close future to share the same airspace of manned aircraft.This implies the need for UAS to define precise safety standards ...
Melega, Marco
core   +4 more sources

An autonomous dynamic collision avoidance control method for unmanned surface vehicle in unknown ocean environment

International Journal of Advanced Robotic Systems, 2019
There are many unknown obstacles in the sea, so the autonomous navigation of unmanned surface vehicle needs to avoid them as soon as possible even under the condition of low control ability of the controller.
Yunsheng Fan, Xiaojie Sun, Guofeng Wang
doaj   +1 more source

A Double-Layer Model Predictive Control Approach for Collision-Free Lane Tracking of On-Road Autonomous Vehicles

Actuators, 2023
This paper proposes a double-layer model predictive control (MPC) algorithm for the integrated path planning and trajectory tracking of autonomous vehicles on roads.
Weishan Yang, Yuepeng Chen, Yixin Su
doaj   +1 more source