Temat: COLREGS - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Comparison of AIS-based prediction of the distance at the CPA with factual separation between vessels
Autorzy:: Banyś, P.
Heymann, F.
Engler, E.
Noack, T.
Tematy:: AIS
anticollision
COLREGs; Pokaż więcej
Data publikacji:: 2014
Powiązania:: https://bibliotekanauki.pl/articles/320526.pdf Link otwiera się w nowym oknie
Źródło:: Annual of Navigation; 2014, 21; 5-18
1640-8632
Pojawia się w:: Annual of Navigation
Opis:: Since its deployment in 2004, the Automatic Identification System (AIS) has been considered a significant improvement of watchkeeping duties at sea. According to current regulations, AIS has not been recognised as an approved anticollision instrument yet. However, it would be difficult to rule out a possibility that AIS, being an essential part of the onboard SOLAS — compliant configuration, is unaidedly used for collision avoidance tasks. Recent research activities of DLR’s Department of Nautical Systems have shown that AIS transmissions may contain a lot of incomplete data and the system does not have any dependable information on its data integrity. For that reason, the computation of the closest point of approach (CPA) and the time to the CPA (TCPA) are analysed based on AIS data involving multiple vessels, in order to compare the predictions with factual approaches between vessels and to evaluate the usability of AIS data, in its present form, for the appraisal of the traffic situation around each vessel.
System automatycznej identyfikacji (AIS) rozwinął się w 2004 roku i odtąd jest uważany za istotny czynnik poprawiający jakość pełnienia wachty morskiej. W aktualnych regulacjach AIS nie jest uznawany za urządzenie antykolizyjne, jednak trudno nie dostrzec możliwości, jakie ma ten — wedle konwencji SOLAS — zasadniczy element obowiązkowego wyposażenia. Badania prowadzone w Wydziale Systemów Nawigacyjnych DLR wykazały, że informacje przekazywane za pośrednictwem AIS mogą zawierać wiele danych niepełnych, a system nie ma żadnego mechanizmu zapewniającego przesyłanie informacji o wiarygodności tych danych. Dlatego w artykule zaprezentowano obliczenia punktu największego zbliżenia (CPA) oraz czasu do tego punktu (TCPA) na podstawie danych z AIS od różnych statków, by porównać prognozy z faktycznymi manewrami, a następnie ocenić użyteczność danych AIS w obecnej postaci dla szacowania sytuacji kolizyjnych w warunkach rzeczywistych.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 2.

Tytuł:: Neuroevolutionary approach to COLREGs ship maneuvers
Autorzy:: Łącki, M.
Tematy:: collision avoidance
colregs
neuroevolutionary approach to colregs
ship handling system
artificial helmsman
Artificial Neural Network (ANN)
evolutionary algorithms
ship manoeuvering; Pokaż więcej
Data publikacji:: 2019
Powiązania:: https://bibliotekanauki.pl/articles/116206.pdf Link otwiera się w nowym oknie
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 4; 745-750
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Opis:: The paper describes the usage of neuroevolutionary method in collision avoidance of two power-driven vessels approaching each other regarding COLREGs rules. This may be also be seen as the ship handling system that simulates a learning process of a group of artificial helmsmen - autonomous control units, created with artificial neural networks. The helmsman observes an environment by its input signals and according to assigned CORLEGs rule, he calculates the values of required parameters of maneuvers (propellers rpm and rudder deflection) in a collision avoidance situation. In neuroevolution such units are treated as individuals in population of artificial neural networks, which through environmental sensing and evolutionary algorithms learn to perform given task safely and efficiently. The main task of this project is to evolve a population of helmsmen which is able to effectively implement chosen rule: crossing or overtaking.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Evolutionary sets of cooperating ship trajectories : COLREGS compliance
Autorzy:: Szłapczyńska, J.
Szłapczyński, R.
Tematy:: evolutionary algorithms
multi-ship encounters
anti-collision
COLREGS; Pokaż więcej
Data publikacji:: 2010
Powiązania:: https://bibliotekanauki.pl/articles/2069662.pdf Link otwiera się w nowym oknie
Źródło:: Journal of Polish Safety and Reliability Association; 2010, 1, 1; 231--238
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Opis:: The paper presents a newly designed improvement to the method of solving multi-ship encounter situations. In general, the method combines some of the assumptions of game theory with evolutionary programming and aims to find optimal set of cooperating trajectories of all ships involved in an encounter situation. The improvement presented here is a new way of modelling some of the COLREGS rules. Due to this change, the method is now able to find solutions, which are more compliant with COLREGS, more intuitive and consequently – safer from the navigator’s point of view.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Modelling of ship’s trajectory planning in collision situations by hybrid genetic algorithm
Autorzy:: Ni, S.
Liu, Z.
Cai, Y.
Wang, X.
Tematy:: trajectory planning
Multiple Genetic Algorithm
ship collision avoidance
nonlinear programming
COLREGs; Pokaż więcej
Data publikacji:: 2018
Powiązania:: https://bibliotekanauki.pl/articles/259640.pdf Link otwiera się w nowym oknie
Źródło:: Polish Maritime Research; 2018, 3; 14-25
1233-2585
Pojawia się w:: Polish Maritime Research
Opis:: Ship collision-avoidance trajectory planning aims at searching for a theoretical safe-critical trajectory in accordance with COLREGs and good seamanship. In this paper, a novel optimal trajectory planning based on hybrid genetic algorithm is presented for ship collision avoidance in the open sea. The proposed formulation is established based on the theory of the Multiple Genetic Algorithm (MPGA) and Nonlinear Programming, which not only overcomes the inherent deficiency of the Genetic Algorithm (GA) for premature convergence, but also guarantees the practicality and consistency of the optimal trajectory. Meanwhile, the encounter type as well as the obligation of collision avoidance is determined according to COLREGs, which is then considered as the restricted condition for the operation of population initialization. Finally, this trajectory planning model is evaluated with a set of test cases simulating various traffic scenarios to demonstrate the feasibility and superiority of the optimal trajectory.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The Display Mode for Choosing the Manoeuvre for Collision Avoidance
Autorzy:: Vagushchenko, L.
Vagushchenko, A.
Tematy:: anticollision
Manoeuvring
Collision Avoidance
ECDIS
ARPA
Planned Route
B-Manoeuvre
COLREGs; Pokaż więcej
Data publikacji:: 2009
Powiązania:: https://bibliotekanauki.pl/articles/117270.pdf Link otwiera się w nowym oknie
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 3; 327-329
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Opis:: The display mode is intended for facilitation of building strategies for collision avoidance by so-called B-manoeuvres. It can be used in ECDIS, ARPA and the simulator systems. B-manoeuvre includes the segment of deviation at a certain angle from the initial course and at the end of it the segment parallel to the initial way’s line (planned route). The offered mode is based on the use of forbidden domains for B-manoeuvres. These domains allow choosing parameters and beginning moment of B-manoeuvre for collision avoidance with one or a few vessels. The account of presence of navigation hazards at the choice of B-manoeuvre is produced by setting the borders of maximum lateral shifting from planned route. The offered mode enables visual drafting of strategies for collision avoidance with vessels by successive B-manoeuvres. It is possible to use this mode as basis of computer search of strategies for collisions avoidance with a few targets.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 6.

Tytuł:: Determination of the right-of-way of sailing ships for use in a navigational decision support system
Określenie pierwszeństwa drogi statków żaglowych dla potrzeb nawigacyjnego systemu wspomagania decyzji
Autorzy:: Wołejsza, P.
Magaj, J.
Tematy:: algorytmizacja MPDM
statki żaglowe
wspomaganie decyzji
algorithmization of Colregs
sailing ships
decision support; Pokaż więcej
Data publikacji:: 2012
Powiązania:: https://bibliotekanauki.pl/articles/359696.pdf Link otwiera się w nowym oknie
Źródło:: Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 30 (102); 170-173
1733-8670
2392-0378
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Szczecinie
Opis:: The determination of sailing ship’s behavior accounting for the Collision Regulations plays an essential part in the choice of a decision procedure and the verification of its effect in navigational decision support systems. One of the basic aims of such systems is to provide procedures defining the direction of course alterations and/or speed accounting for the regulations in force. There are a number of publications on the subject. Based on the performed analysis of the collision regulations and on navigators’ and sailors’ knowledge the authors have developed an anti-collision algorithm for close quarters situations in the open sea in good visibility.
Określenie sposobu zachowania się statku żaglowego z uwagi na przepisy prawa drogi odgrywa istotną rolę przy wyborze procedury decyzyjnej oraz weryfikacji wyniku jej działania w nawigacyjnych systemach wspomagania decyzji. Zasadniczym celem jest opracowanie procedur określających kierunek zmian kursu lub/i prędkości z uwzględnieniem obowiązujących przepisów. Istnieje szereg publikacji dotyczących tego zagadnienia. Na podstawie przeprowadzonej analizy przepisów MPDM oraz w oparciu o wiedzę nawigatorów i żeglarzy opracowano algorytm manewru antykolizyjnego dla sytuacji spotkań statków żaglowych na akwenach otwartych w warunkach dobrej widzialności.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Trajectory Planning with Negotiation for Maritime Collision Avoidance
Autorzy:: Hornauer, S.
Hahn, A.
Blaich, M.
Reuter, J.
Tematy:: Trajectory Planning
Negotiation
route planning
Collision Avoidance
vessel traffic service (VTS)
Expert Knowledge
COLREGs; Pokaż więcej
Data publikacji:: 2015
Powiązania:: https://bibliotekanauki.pl/articles/116268.pdf Link otwiera się w nowym oknie
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2015, 9, 3; 335-341
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Opis:: The problem of vessel collisions or near-collision situations on sea, often caused by human error due to incomplete or overwhelming information, is becoming more and more important with rising maritime traffic. Approaches to supply navigators and Vessel Traffic Services with expert knowledge and suggest trajectories for all vessels to avoid collisions, are often aimed at situations where a single planner guides all vessels with perfect information. In contrast, we suggest a two-part procedure which plans trajectories using a specialised A* and negotiates trajectories until a solution is found, which is acceptable for all vessels. The solution obeys collision avoidance rules, includes a dynamic model of all vessels and negotiates trajectories to optimise globally without a global planner and extensive information disclosure. The procedure combines all components necessary to solve a multi-vessel encounter and is tested currently in simulation and on several test beds. The first results show a fast converging optimisation process which after a few negotiation rounds already produce feasible, collision free trajectories.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 8.

Tytuł:: Behaviour Patterns in Crossing Situations
Autorzy:: Kempa, J.
Tematy:: anticollision
Crossing Situation
Collision Situation
COLREGs
e-Navigation
Collision Avoidance
Radar Simulator
Behaviour Patterns; Pokaż więcej
Data publikacji:: 2009
Powiązania:: https://bibliotekanauki.pl/articles/116754.pdf Link otwiera się w nowym oknie
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
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.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 9.

Tytuł:: Difficulties in understanding the COLREGs among the students from different systems of education for seafarers
Autorzy:: Ivanišević, D.
Gundić, A.
Mohović, D.
Tematy:: Maritime Education and Training (MET)
colregs
understanding the colregs
International Regulations for Preventing Collisions at Sea
STCW Convention
System of Education for Seafarers
IMO Model Course
MET System in Croatia; Pokaż więcej
Data publikacji:: 2019
Powiązania:: https://bibliotekanauki.pl/articles/116360.pdf Link otwiera się w nowym oknie
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 4; 869-873
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Opis:: The paper shows the results of the research conducted in order to analyse the differences in understanding the International Regulations for Preventing Collisions at Sea among the students in countries practising two different systems of education for seafarers: the so-called “sandwich system” and the continuing system. Methods of learning as well as their effect on understanding the International Regulations for Preventing Collisions at Sea and students’ opinions on efficient methods of learning have also been analysed. Furthermore, the problems the teachers are facing have been identified. Measures for the improvement of the system have been proposed as well.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: A Simulative Comparison of Ship Domains and Their Polygonal Approximations
Autorzy:: Szłapczyński, R.
Szłapczyńska, J.
Tematy:: safety at sea
Ship Domain
Collision Avoidance
COLREGs
ECDIS
Simulative Comparison
Fuzzy Domain
Simulation Experiment; Pokaż więcej
Data publikacji:: 2015
Powiązania:: https://bibliotekanauki.pl/articles/116310.pdf Link otwiera się w nowym oknie
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2015, 9, 1; 135-141
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Opis:: The paper investigates the impact of a precise ship domain shape on the size of collision avoidance manoeuvres. The considered collision avoidance manoeuvres include both course and speed alterations. Various ship domains are compared with their polygonal approximations, which vary in the number of points of a domain contour and placement of these points. The best of all considered approximations is determined in the course of simulation experiments performed for head-on, crossing and overtaking situations. The chosen number and placement of contour points combine precision of domain approximation with reasonable computational time.
Dostawca treści:: Biblioteka Nauki

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