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Wyszukujesz frazę "collision situation" wg kryterium: Temat


Tytuł:
Behaviour Patterns in Crossing Situations
Autorzy:
Kempa, J.
Powiązania:
https://bibliotekanauki.pl/articles/116754.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
anticollision
Crossing Situation
Collision Situation
COLREGs
e-Navigation
Collision Avoidance
Radar Simulator
Behaviour Patterns
Opis:
The January 2009 issue of the Journal of Navigation included a paper (John Wilde Crosbie 2009) entitled, “Revisiting the lessons of the early steering and sailing rules for an e-navigation age.” Following a description of the development of the COLREGS from the early 19th century, he concluded that the current steering and sailing rules should be replaced by a single rule more suited to modern conditions. This might take the form of rule stating that a vessel taking action to avoid collision should not pass ahead of the other vessel. Such a rule would require a radical change in the philosophy of collision avoidance at sea, and evidence is required that it would be both effective and acceptable by mariners. Radar simulator experiments, conducted by the author some years ago, in another context, suggest that this might be the case. An analysis of the experimental results and some conclusions are reported in this paper. The author believes that further trials, specifically designed to test the Crosbie proposals, would be desirable.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 1; 75-79
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Planned Route Based Negotiation for Collision Avoidance Between Vessels
Autorzy:
Hu, Q.
Yang, C.
Cheng, H.
Xiao, B.
Powiązania:
https://bibliotekanauki.pl/articles/116234.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
anticollision
Collision Situation
COLREGs
Collision Avoidance System
Collision Avoidance Decision Making
route planning
Computer Simulation
Negotiation
Opis:
Automatic vessel collision-avoidance systems have been studied in the fields of artificial intelligence and navigation for decades. And to facilitate automatic collision-avoidance decision-making in two-vessel-encounter situation, several expert and fuzzy expert systems have been developed. However, none of them can negotiate with each other as seafarers usually do when they intend to make a harmonious and more economic overall plan of collision avoidance in the COLREGS-COST-HIGH situations where collision avoidance following the International Regulations for Preventing Collisions at Sea(COLREGS) costs too much. A negotiation framework was put forward in our previous research to enable vessels to negotiate for optimizing collision avoidance in the COLREGS-COST-HIGH situations at open sea. In this paper, the negotiation framework is improved by considering the planned route of both vessels. The simulation results show that more economic overall plan of collision avoidance may be achieved by the improved framework when one or both parties deviate from their planed route or are approaching their next way points.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2008, 2, 4; 363-368
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessing the Frequency and Material Consequences of Collisions with Vessels Lying at an Anchorage in Line with IALA iWrap MkII
Autorzy:
Burmeister, H.-C.
Walther, L.
Jahn, C.
Töter, S.
Froese, J.
Powiązania:
https://bibliotekanauki.pl/articles/116338.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Anchorage
Collision Risk
Collision Scenario
IALA iWrap
risk assessment
Ship at Anchor
IALA Methodology
Collision Situation
Opis:
This paper proposes a collision model for ships underway and temporary objects as an extension to state-of-the-art maritime risk assessment like IALA iWrap MkII. It gives a brief review of frequency modeling’s and consequence calculation theory as well as its applications, before it analogously derives a model to assess the risk of anchorage areas. Subsequently, its benefit is demonstrated by an example scenario.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 1; 61-68
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Analysis of Possibilities How the Collision Between m/v 'Gdynia' and m/v 'Fu Shan Hai' Could Have Been Avoided
Autorzy:
Banachowicz, A.
Wolejsza, P.
Powiązania:
https://bibliotekanauki.pl/articles/117093.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Manoeuvring
Collision Situation
Ships Collision
Automatic Identification System (AIS)
Computer Simulation
Collision Investigation
Multi-Agent Decision Supporting System
COLREGs
Opis:
The report presents the simulation results of collision between m/v “Gdynia” and m/v “Fu Shan Hai”. The analysis was performed by means of decision support in collision situations. This system is based on a structure of programme multiagents using AIS data (Automatic Identification System) with the possibility of cooperation between agents or vessels. The multiagent system of supporting anticollision decisions increases the reliability of navigational information and permits making right decisions, thereby increasing safety at sea.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2008, 2, 4; 377-381
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The problems of Collision Avoidance at Sea in the Formulation of Complex Motion Principles
Autorzy:
Żak, B.
Powiązania:
https://bibliotekanauki.pl/articles/907975.pdf
Data publikacji:
2004
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
sytuacja kolizyjna
system antykolizyjny
sterowanie optymalne
collision situation
modelling
anticollision systems
time-optimal control
Opis:
The paper presents a mathematical model of a collision situation for objects afloat based on the rules of a multiple complex motion. It also contains an analysis of the presented model and draws some conclusions from it. The method used to determine the minimum-time control of ships in a situation of colliding with other objects afloat is presented for a mathematical model of a collision situation. It also includes the results of a simulation study conducted by means of this method. A parallel approach of a ship to an encountered object was studied, i.e., a situation generating a critical case which is the collision of two ships.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2004, 14, 4; 503-514
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Compromise of two-criteria final payoff of the game ship control in collision situations
Autorzy:
Lisowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/1841477.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
collision situation
pareto optimal
multi-criteria static optimization
bentham's utilitarian rule
Salukvadze's Benchmark
benson's weighted sums
haimes's constraints
Opis:
The essence of the article is the use of multi-criteria static optimization of object motion, based on a set of optimal Pareto points in the space of possible variants of solutions for a new approach to the problem as a game control. Using the example of the two-criteria optimization of the final payoff of the object game control during the safe evasion of the encountered objects, six methods of multi-criteria static optimization are presented—Bentham's utilitarian rule, Rawls's principle of justice, Salukvadze's benchmark, Benson's weighted sums, Haimes's constraints, and goal-oriented programming. In the end, the results obtained by the two-criteria optimization are compared with regard to the values of the components of the final game payoff—the risk of collision and the deviation of the object from the safe route of the set trajectory of movement. The directions for the development of multi-criteria optimization methods, both static and dynamic, and the game are indicated.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 2; 455-461
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Navigators’ Behavior in Traffic Separation Schemes
Autorzy:
Pietrzykowski, Z.
Wołejsza, P.
Magaj, J.
Powiązania:
https://bibliotekanauki.pl/articles/117042.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Maritime Traffic
Traffic Separation Scheme
Traffic Density
Vessel Traffic
Decision Support Algorithms
Navigators’ Behavior
Collision Situation
decision support system
Opis:
One of the areas of decision support in the navigational ship conduct process is a Traffic Separation Scheme. TSSs are established in areas with high traffic density, often near the shore and in port approaches. The main purpose of these schemes is to improve maritime safety by channeling vessel traffic into streams. Traffic regulations as well as ships behavior in real conditions in chosen TSSs have been analyzed in order to develop decision support algorithms.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2015, 9, 1; 121-126
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Game Strategies of Ship in the Collision Situations
Autorzy:
Lisowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/117558.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
game theory
Game Ship Control (GSC)
Collision Situation
MATLAB
Safe Ship Trajectory
Simulation Research
Neural Ship’s Domain
Algorithm
Opis:
The paper introduced the basic model of process of safe ship control in a collision situation using a game model with j objects, which includes non-linear state equations and non-linear, time varying constraints of the state variables as well as the quality game control index in the forms of the game integral payment and the final payment. Approximated model of the process control as the model of multi-step matrix game in the form of dual linear programming problem has been adopted here. The Game Ship Control GSC computer program has been designed in the Matlab/Simulink software in order to determine the own ship’s safe trajectory. These considerations have been illustrated with examples of a computer simulation using an GSC program for determining the safe ship's trajectory in real navigational situation. Simulation research were passed for five sets of strategies of the own ship and met ships.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 1; 69-77
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Comparison of Safe Control Methods in Marine Navigation in Congested Waters
Autorzy:
Lisowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/116043.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
marine navigation
Congested Waters
Collision Situation
safe ship control
Decision Supporting Algorithm
Dynamic Programming Method
Linear Programming Method
Safe Own Ship's Trajectory
Opis:
The paper introduces comparison of five methods of safe ship control in collision situation: multi-stage positional non-cooperative and cooperative game, multi-step matrix game, dynamic and kinematics optimisation with neural constrains of state control process. The synthesis of computer navigator decision supporting algorithms with using dual linear programming and dynamic programming methods has been presented. The considerations have been illustrated an examples of a computer simulation the algorithms to determine the safe own ship's trajectory in situation of passing a many of the ships encountered at sea.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 2; 163-172
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cooperative and non-cooperative game control strategies of the ship in collision situation
Autorzy:
Lisowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/116494.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
cooperative game
collision situation
differential game
multistage process decision
colregs
non-cooperative game
multistage cooperative positional game algorithm
multistage non-cooperative positional game algorithm
Opis:
The paper introduces the positional cooperative and non-cooperative game of a greater number of met ships for the description of the process considered as well as for the synthesis of optimal control strategies of the own ship in collision situation. The approximated mathematical model of differential game in the form of triple linear programming problem is used for the synthesis of safe ship trajectory as a multistage process decision. The considerations have been illustrated an example of program computer simulation to determine the safe ship trajectories in situation of passing a many of the ships encountered.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 1; 83-91
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on Double Collision Avoidance Mechanism of Ships at Sea
Autorzy:
Bi, X.
Liu, X. J.
Powiązania:
https://bibliotekanauki.pl/articles/117085.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
safety of navigation
collision avoidance
collision avoidance mechanism
close quarter situation
immediate danger
mathematical model
collision risk
double collision avoidance
Opis:
When power driven vessels encounter at sea, they need to avoid collision. The definition of right vessel may mislead ships officers think his or her direct navigating has absolute power with this special ship. This paper will define DCPA symbols; give the cause and the method of double collision avoidance mechanism of ships at sea.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2015, 9, 1; 13-16
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The automatic collision avoiding plan research of given way vessel in crossing situation
Autorzy:
Hu, W.
He, Y.
Powiązania:
https://bibliotekanauki.pl/articles/259329.pdf
Data publikacji:
2018
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship domain
hydrodynamic model
crossing situation
quantitative element in meeting situation
automatic collision- avoiding
Opis:
This paper aims to the computing model of quantitative elements in crossing situation based on the separating of different states about vessel’s meeting to study the automatic collision-avoiding plan of given way vessel in crossing situation. Following results are proved by simulations: The accuracy of hydrodynamic model is enough for studying and application for automatic collision-avoiding; computing model of quantitative elements by method of bisection is rapidly and reliably convergent during computing. The whole meeting process can be separated to several stages according to the quantitative elements in crossing situation. Different initial collision avoiding measures of given-way vessel in different stages produced as per rules and ordinary practice of seaman.
Źródło:
Polish Maritime Research; 2018, S 2; 12-16
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An assessment of ship encounter situations based on predicted points of collision
Autorzy:
Galor, W.
Powiązania:
https://bibliotekanauki.pl/articles/135643.pdf
Data publikacji:
2016
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
encounter situation
collision of ships
radar
ARPA
closest point of approach
predicted point of collision
Opis:
A number of factors affect the safety of navigation, the collision of two ships being one of them. In ship encounter situations, certain principles of behaviour set forth by regulations are in force. Traditionally, a navigational situation is evaluated by identifying the closest point of approach for the passing ships and by comparing it with the assumed safe distance. Then it is necessary to use technical aids: radar and Arpa (depending on the regulations). In Arpa, navigational situation information is mainly presented in the form of vectors. The other presentation that can be used in an encounter situation is the predicted point of collision (PPC). This is the point or points toward which one’s own ship should steer at her present speed (assuming that the target does not manoeuvre) in order for a collision to occur. This paper presents original results of a study into the assessment of ship encounter situations based on PPC. The methods (analytical and graphical) of PPC as a set of circles are elaborated and an analysis of a ship encounter situation performed.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 46 (118); 82-87
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determining the optimal course alteration manoeuvre in a multi-target encounter situation for a given ship domain model
Autorzy:
Szłapczyński, R.
Powiązania:
https://bibliotekanauki.pl/articles/320909.pdf
Data publikacji:
2007
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
manewr kursem
złożona sytuacja
zapobieganie zderzeniom
course manoeuvre
multi-target situation
collision avoidance
Opis:
The paper introduces a new numerical deterministic method of finding the necessary course alteration manoeuvre in a multi-target encounter situation for a given ship domain model. Its simplicity, flexibility and low computational complexity make this algorithm a useful component for real-time systems, where processing time is of importance. The algorithm is presented explicitly, so that it could be directly applied in any on-board collision avoidance system or VTS system. Example results of its use are also provided.
Źródło:
Annual of Navigation; 2007, 12; 75-85
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Manoeuvring areas to adapt ACAS for the maritime domain
Autorzy:
Baldauf, M.
Mehdi, R.
Deeb, H.
Schröder-Hinrichs, J. U.
Benedict, K.
Krüger, C.
Fischer, S.
Gluch, M.
Powiązania:
https://bibliotekanauki.pl/articles/135052.pdf
Data publikacji:
2015
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
situation-dependent analysis
risk assessment
risk of collision
collision probability
prediction of manoeuvring areas
potential areas of water
fast time simulation
Opis:
Rapidly increasing numbers of ships and ship sizes pose an ever-growing challenge to the maritime industry. Although statistics indicate improved levels of safety in the industry which carries 90% of the world’s trade, the risk of navigational accidents, among other issues, remains a prime concern and priority (EMSA, 2010; 2014). In order to address these concerns, the authors turned to another high-risk industry for inspiration. Specifically, they turned to the aviation industry, which has often been used as a source of comparisons and ideas by researchers in the maritime domain. Keeping up with the trend, the authors of this paper turn to a tried-and-tested system used widely in modern aviation: the Airborne Collision Avoidance System (ACAS). The prime idea behind ACAS is to construct two virtual 3D zones around an aircraft. These zones are dynamic, and depend on the manoeuvring characteristics of a given aircraft. If the system detects an “intruder” (another aircraft) in either of the two well-defined virtual zones, it provides warnings and/or instructions to pilots of both aircraft to take certain precautionary or emergency measures. In the current paper, the authors explore whether or not such a system is feasible for use in the maritime domain and, if so, how. The paper provides a detailed analysis of the potential benefits and drawbacks of using an ACAS-like system onboard vessels. It also discusses possible means of implementation and integration with current equipment, and explores how the introduction of e-navigation may impact the proposed solution.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2015, 43 (115); 39-47
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł

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