Results 61 to 70 of about 6,421 (163)

Collision Avoidance of Podded Propulsion Unmanned Surface Vehicle With COLREGs Compliance and Its Modeling and Identification

IEEE Access, 2018
With the development of marine technology, the research of unmanned surface vehicles (USVs) has received wide attention from the world. Designing effective collision avoidance algorithm in dynamic sea environment is necessary for the navigation of USVs ...
Xiaojie Sun, Guofeng Wang, Yunsheng Fan, Dongdong Mu, Bingbing Qiu   +4 more
doaj   +1 more source

Benchmarking Collision Avoidance Schemes for Dynamic Environments

, 2009
This paper evaluates and compare three state-of-the-art collision avoidance schemes designed to operate in dynamic environments. The first one is an extension of the popular Dynamic Window approach; it is henceforth called TVDW which stands for Time-Varying Dynamic Window.
Martinez-Gomez, Luis, Fraichard, Thierry
openaire   +2 more sources

Hierarchical Dynamic Obstacle-Avoidance Strategy Combining Hybrid A* and DWA with Adaptive Path Re-Entry for Unmanned Surface Vessels

Applied Sciences
Obstacle-avoidance risk threshold control and global discrete keypoint re-entry are critical factors influencing the smooth dynamic obstacle avoidance of unmanned vessels.
Qin Wang, Leilei Cheng, Kexin Wang, Gang Zhang   +3 more
doaj   +1 more source

Method of Emergency Collision Avoidance for Unmanned Surface Vehicle (USV) Based on Motion Ability Database

Polish Maritime Research, 2019
The unmanned surface vehicles (USV) are required to perform a dynamic obstacle avoidance during fulfilling a task. This is essential for USV safety in case of an emergency and such action has been proved to be difficult. However, little research has been
Song Lifei, Chen Houjing, Xiong Wenhao, Dong Zaopeng, Mao Puxiu, Xiang Zuquan, Hu Kai   +6 more
doaj   +1 more source

Ship Path Following and Collision Avoidance Based on Vector Field Guidance Law and Model Predictive Control

Shanghai Jiaotong Daxue xuebao
A model predictive control (MPC) method based on the vector field guidance law is proposed to improve the effectiveness of path following and collision avoidance for ships.
HE Yu, OUYANG Zilu, ZOU Lu, CHEN Weimin, ZOU Zaojian
doaj   +1 more source

Intelligent collision avoidance strategy for all-electric propulsion GEO satellite orbit transfer control

Open Astronomy
The all-electric propulsion Geostationary Earth Orbit (GEO) satellite, characterized by its low launch cost, high precision control, and long operational lifespan, has become a focal point in aerospace research worldwide.
Yang Yue, Hao Yuanhui, Ke Liangjun, Liu Jiangong, Huang Jingqi   +4 more
doaj   +1 more source

Communication-aided multi-UAV collision detection and avoidance based on two-stage curriculum reinforcement learning

Biomimetic Intelligence and Robotics
Currently, multi-UAV collision detection and avoidance is facing many challenges, such as navigating in cluttered environments with dynamic obstacles while equipped with low-cost perception devices having a limited field of view (FOV).
Guanzheng Wang, Xiangke Wang, Zhiqiang Miao, Zhihong Liu, Xinyu Hu   +4 more
doaj   +1 more source

Integrated Longitudinal and Lateral Acceleration-Based Trajectory Planning Algorithm for Emergency Collision Avoidance Maneuver in Autonomous Vehicle

IEEE Access
While autonomous driving technology has significantly enhanced the safety and convenience of driving in the automotive industry, the field of collision avoidance technology, especially in emergency situations, still requires advanced development ...
Jaeseung Yu, Junseok Shim, Kibeom Lee
doaj   +1 more source

Dynamic Target Hunting Under Autonomous Underwater Vehicle (AUV) Motion Planning Based on Improved Dynamic Window Approach (DWA)

Journal of Marine Science and Engineering
A dynamic distributed target hunting method is proposed for the problem of distributed moving target hunting by multiple Autonomous Underwater Vehicles (AUVs).
Juan Li, Houtong Lu, Honghan Zhang, Zihao Zhang   +3 more
doaj   +1 more source

Collision Avoidance of Multi-UUV Systems Based on Deep Reinforcement Learning in Complex Marine Environments

Journal of Marine Science and Engineering
For multiple unmanned underwater vehicles (UUVs) systems, obstacle avoidance during cooperative operation in complex marine environments remains a challenging issue.
Fuyu Cao, Hongli Xu, Jingyu Ru, Zhengqi Li, Haopeng Zhang, Hao Liu   +5 more
doaj   +1 more source