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Collision avoidance

About: Collision avoidance is a research topic. Over the lifetime, 8014 publications have been published within this topic receiving 111414 citations.


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Journal ArticleDOI
TL;DR: In this article, a distributed collision avoidance decision-making and path planning formulation is studied in a distributed way, by using a top-to-bottom organization to structure the system.
Abstract: A multi‐ship collision avoidance decision‐making and path planning formulation is studied in a distributed way. This paper proposes a complete set of solutions for multi‐ship collision avoidance in intelligent navigation, by using a top‐to‐bottom organization to structure the system. The system is designed with two layers: the collision avoidance decision‐making and the path planning. Under the general requirements of the International Regulations for Preventing Collisions at Sea (COLREGs), the performance of distributed path planning decision‐making for anti‐collision is analyzed for both give‐way and stand‐on ships situations, including the emergency actions taken by the stand‐on ship in case of the give‐way ship’s fault of collision avoidance measures. The Artificial Potential Field method(APF) is used for the path planning in details. The developed APF method combined with the model of ship domain takes the target ships’ speed and course in‐to account, so that it can judge the moving characteristics of obstacles more accurately. Simulation results indicate that the system proposed can work effectiveness. http://www.transnav.eu the International Journal on Marine Navigation and Safety of Sea Transportation Volume 11

30 citations

Journal ArticleDOI
TL;DR: Several solutions for “Just in time Collision Avoidance (JCA)” have been proposed and are recalled in the paper.

30 citations

Journal ArticleDOI
TL;DR: A collision avoidance/conflict resolution model for aircraft traversing planar intersecting trajectories is developed based on the actual flight dynamics of each aircraft and the criteria that a flight regime correction is optimal if it represents a minimum-time safe deviation from a preassigned flight program.
Abstract: A collision avoidance/conflict resolution model for aircraft traversing planar intersecting trajectories is developed based on the actual flight dynamics of each aircraft and the criteria that a flight regime correction is optimal if it represents a minimum-time safe deviation from a preassigned flight program. The formulation of the model leads to a singular optimal control problem where the control variable constraint is the maximum acceptable aircraft turn rate for passenger comfort and safety and the state variable constraint is defined in terms of the radius of the protected zone about a potentially conflicting aircraft. A robust, accurate real-time solution procedure is derived for computing the steering program for the execution of the optimal safe avoidance maneuver. Several representative examples of pairwise trajectory conflicts are analysed in detail. A brief discussion of how the model might be generalized to incorporate changes in airspeed and altitude as well as more comprehensive dynamics is included.

30 citations

Journal ArticleDOI
29 Nov 2012-Sensors
TL;DR: A forward collision warning system based on a laser scanner that is able to detect several potential danger situations and can act on the actuators of the ego-vehicles as well as transmit this information to other vehicles circulating in the same area using vehicle-to-vehicle communications.
Abstract: The accurate perception of the surroundings of a vehicle has been the subject of study of numerous automotive researchers for many years. Although several projects in this area have been successfully completed, very few prototypes have actually been industrialized and installed in mass produced cars. This indicates that these research efforts must continue in order to improve the present systems. Moreover, the trend to include communication systems in vehicles extends the potential of these perception systems transmitting their information via wireless to other vehicles that may be affected by the surveyed environment. In this paper we present a forward collision warning system based on a laser scanner that is able to detect several potential danger situations. Decision algorithms try to determine the most convenient manoeuvre when evaluating the obstacles’ positions and speeds, road geometry, etc. Once detected, the presented system can act on the actuators of the ego-vehicle as well as transmit this information to other vehicles circulating in the same area using vehicle-to-vehicle communications. The system has been tested for overtaking manoeuvres under different scenarios and the correct actions have been performed.

30 citations

Proceedings ArticleDOI
Tache, Fischer, Siegwart, Moser, Mondada 
01 Jan 2007

30 citations


Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20242
2023547
20221,269
2021503
2020621
2019661