Results 11 to 20 of about 3,532,261 (141)

A Novel Collision Avoidance Logic for Unmanned Aerial Vehicles Using Real-Time Trajectory Planning [PDF]

open access: yes, 2014
An effective collision avoidance logic should prevent collision without excessive alerting. This requirement would be even more stringent for an automatic collision avoidance logic, which is probably required by Unmanned Aerial Vehicles to mitigate ...
Lai, Chi Kin
core   +7 more sources

Automatic collision avoidance of ships [PDF]

open access: yes, 2008
One of the key elements in automatic simulation of ship manoeuvring in confined waterways is route finding and collision avoidance. This paper presents a new practical method of automatic trajectory planning and collision avoidance based on an artificial
Lee, B.S., Han, D., Xue, Y.
core   +4 more sources

DCA-Based Collision Avoidance Path Planning for Marine Vehicles in Presence of the Multi-Ship Encounter Situation

open access: yesJournal of Marine Science and Engineering, 2022
The problem of ship collision avoidance path planning is one of the key problems in the ship motion control field. Aiming at the high computational time problem of path planning in multi-ship encounter situations and the impact of the target ship’s ...
Jiagen Yu, Zhengjiang Liu, Xianku Zhang
doaj   +1 more source

Trajectory Tracking and Collision Avoidance Switching Control for Multi-UAV Based on DMPC [PDF]

open access: yesHangkong bingqi, 2023
Multi-unmanned aerial vehicle (UAV) system often encounters sudden static or dynamic obstacle threats during flight. How to realize obstacle avoidance is one of the key problems that must be solved for multi-UAV system.
Zhao Chaolun, Dai Shaowu, He Yunfeng, Liu Shuai, Zhao Guorong
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

Path Planning of an Unmanned Surface Vessel Based on the Improved A-Star and Dynamic Window Method

open access: yesJournal of Marine Science and Engineering, 2023
In order to ensure the safe navigation of USVs (unmanned surface vessels) and real-time collision avoidance, this study conducts global and local path planning for USVs in a variable dynamic environment, while local path planning is proposed under the ...
Shunan Hu   +3 more
doaj   +1 more source

Visual cueing for collision avoidance system [PDF]

open access: yes, 2012
The modern Traffic Alert and Collision Avoidance System (TCAS) used in airlines today is the TCAS II. It provides pilots with both Traffic Advisory (TA) and Resolution Advisory (RA) which in turn reduces the incidence of mid-air collisions.
Li, Huiying
core   +4 more sources

Autonomous Obstacle Avoidance Algorithm for Unmanned Surface Vehicles Based on an Improved Velocity Obstacle Method

open access: yesISPRS International Journal of Geo-Information, 2021
Focusing on the collision avoidance problem for Unmanned Surface Vehicles (USVs) in the scenario of multi-vessel encounters, a USV autonomous obstacle avoidance algorithm based on the improved velocity obstacle method is proposed.
Jia Ren, Jing Zhang, Yani Cui
doaj   +1 more source

Intelligent collision avoidance decision-making method for unmanned ships based on driving practice

open access: yesZhongguo Jianchuan Yanjiu, 2021
Objective In order to realize the intelligent navigation and autonomous collision avoidance of unmanned ships in coastal areas, an intelligent collision avoidance decision-making method based on driving practice is proposed.
Zhiguo DING   +4 more
doaj   +1 more source

Collision Avoidance Path Planning for Vehicles Combining MPC and CACC Controllers

open access: yesIEEE Access, 2023
The vehicle collision avoidance system has problems such as poor emergency collision avoidance ability and susceptibility to noise interference. Therefore, this study adopts a vehicle tracking model that integrates dynamic constraints and a two car ...
Qingde Zeng, Bin Liu
doaj   +1 more source

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