Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "avoidance" wg kryterium: Temat


Tytuł:
The Machine Learning Method of PIDVCA
Autorzy:
Li, L.
Wang, X.
Chen, G.
Tematy:
learning methods
personified intelligence
collision avoidance
dynamic collision avoidance
static collision avoidance
Pokaż więcej
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:
https://bibliotekanauki.pl/articles/1841618.pdf  Link otwiera się w nowym oknie
Opis:
Building a dynamic collision knowledge base of self-learning is one of the core contents of implementing "personified intelligence" in Personifying Intelligent Decision-making for Vessel Collision Avoidance (short for PIDVCA). In the paper, the machine learning method of PIDVCA combined with offline artificial learning and online machine learning is proposed. The static collision avoidance knowledge is acquired through offline artificial learning, and the isomeric knowledge representation integration method with process knowledge as the carrier is established, and the Dynamic collision avoidance knowledge is acquired through online machine learning guided by inference engine. A large number of simulation results show that the dynamic collision avoidance knowledge base constructed by machine learning can achieve the effect of anthropomorphic intelligent collision avoidance. It is verified by examples that the machine learning method of PIDVCA can realize target perception, target cognition and finally obtain an effective collision avoidance decision-making.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of Possible Avoidance of the Collision Between M/V Gotland Carilina and M/V Conti Harmony
Autorzy:
Wołejsza, P.
Magaj, J.
Tematy:
collision avoidance
Pokaż więcej
Wydawca:
Polskie Forum Nawigacyjne
Powiązania:
https://bibliotekanauki.pl/articles/320855.pdf  Link otwiera się w nowym oknie
Opis:
The paper presents the results of collision situation simulations concerning the m/v Gotland Carolina and the m/v Conti Harmony. The simulation aimed at analyzing the causes of the collision and generating manoeuvres that would have resulted in the two ships passing each other. The analysis was made with the use of a Navigational Decision Support System (NDSS). The data to be supplied to NDSS are collected from a variety of sources of navigational information. Then they are processed by specialized computing algorithms and presented to the operator on a display in the alphanumeric and graphic forms. The data on the specific navigational situation from the Danish Maritime Administration (DMA) were used for the generation of signals transmitted to NDSS.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on Double Collision Avoidance Mechanism of Ships at Sea
Autorzy:
Bi, X.
Liu, X. J.
Tematy:
safety of navigation
collision avoidance
collision avoidance mechanism
close quarter situation
immediate danger
mathematical model
collision risk
double collision avoidance
Pokaż więcej
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:
https://bibliotekanauki.pl/articles/117085.pdf  Link otwiera się w nowym oknie
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.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Information unfitness as a factor constraining Automatic Identification System (AIS) application to anti-collision manoeuvring
Autorzy:
Felski, A.
Jaskólski, K.
Tematy:
AIS
collision avoidance
Pokaż więcej
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Powiązania:
https://bibliotekanauki.pl/articles/259139.pdf  Link otwiera się w nowym oknie
Opis:
Common use of shipboard AIS creates conditions for the use of a new kind of dynamic data in the situation of the risk of collision. AIS position report is a source of supplementary information derived from error leveraged radar measurement. However, in view of the results of the studies there are opinions with regard to inconsistent AIS dynamic data in the process of decision-making by the officer of the watch. By taking into consideration the recordings of the studies and technical specification of AIS it can be concluded that the results of inconsistent data have significant role in collision avoidance manoeuvring.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Navigation Decision Supporting System (NAVDEC) - testing on full mission simulator
Autorzy:
Wołejsza, P.
Magaj, J.
Gralak, R.
Tematy:
supporting system
collision avoidance
simulation
Pokaż więcej
Wydawca:
Polskie Forum Nawigacyjne
Powiązania:
https://bibliotekanauki.pl/articles/320635.pdf  Link otwiera się w nowym oknie
Opis:
The known navigational systems in use and methods of navigational decision support perform information functions and as such are helpful in the process of safe conduct of a vessel. However, none of these known systems provides a navigator with ready solutions of collision situations taking account of all the vessels in the proximity of own ship, where the Collision Regulations apply. Another shortcoming of these systems is that they do not explain the assessment of a navigational situation and proposed manoeuvre parameters. Results of testing in simulation condition of NAVDEC — new Navigational Decision Supporting System developed by research team of prof. Pietrzykowski [Pietrzykowski et al., 2012a], [Pietrzykowski et al., 2012b] — were presented in this paper.
Znane, będące obecnie w użyciu systemy nawigacyjne, jak również metody nawigacyjnego wspomagania decyzji pełnią funkcje informacji i jako takie są pomocne w procesie bezpiecznego prowadzenia statku. Żaden z tych znanych systemów nie dostarcza jednak nawigatorowi gotowych rozwiązań sytuacji kolizyjnej z uwzględnieniem wszystkich statków znajdujących się w pobliżu oraz odpowiednich przepisów międzynarodowych. Inna wadą istniejących systemów jest to, że nie podają one oceny sytuacji nawigacyjnej i proponowanych parametrów manewru. W artykule przedstawiono wyniki testowania w warunkach symulowanych systemu NAVDEC — nowego nawigacyjnego systemu wspomagania decyzji tworzonego przez zespół badawczy prof. Pietrzykowskiego.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A COLREGs-compliant decision support tool to prevent collisions at sea
Autorzy:
Martelli, M.
Žuškin, S.
Zaccone, R.
Rudan, I.
Tematy:
analysis of ship collision
collision avoidance
collision avoidance decision making
collision avoidance system
anti-collision maneuvering
autonomous control unit
autonomous ship
autonomous navigation system
Pokaż więcej
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:
https://bibliotekanauki.pl/articles/24201449.pdf  Link otwiera się w nowym oknie
Opis:
Groundings and collisions still represent the highest percentage of marine accidents despite the current attention on Maritime Education and Training and the improvement of sensor capability. Most of the time, a collision is caused by a human error with consequences ranging from moderate to severe, with a substantial impact on both environment and life safeguarded at sea. In this paper, a brief statistical data regarding human element as a root cause of marine incidents together with collision regulations misunderstanding is presented as a background chapter. Furthermore, the present work discusses a decision support system architecture to suggest an appropriate action when the risk of a potential collision is detected. The proposed architecture system is based on various modules integrated with proper sensor input data regarding the surrounding navigation area. As a result, the tool can support the Officers of Watch in the decision-making process providing an early suggestion in compliance with the COLlision REGulations. The proposed system is intended to be used onboard independently from the degree of automation of the ship, and it is based on AIS, which is mandatory, making it widely applicable. The proper use of the system can considerably reduce the number of collisions, as demonstrated by the obtained results.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Automatic collision avoidance in PowerINSPECT
Autorzy:
Dickin, P.
Tematy:
CAM
collision avoidance
inspection
Pokaż więcej
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Powiązania:
https://bibliotekanauki.pl/articles/132132.pdf  Link otwiera się w nowym oknie
Opis:
The 2015 version of PowerINSPECT, the world’s leading hardware-independent metrology software, includes automatic collision avoidance, faster import of large CAD files, quicker preparation of longer inspection reports, and improved display of results from point-cloud data, plus many other customer-requested enhancements.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of automatic collision avoidance system and quantitative evaluation of the manoeuvring results
Autorzy:
Nakamura, S.
Okada, N.
Tematy:
collision avoidance
automatic collision avoidance system
quantitative evaluation
manoeuvring
congested waters
colregs
collision risk
anti-collision
Pokaż więcej
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:
https://bibliotekanauki.pl/articles/116438.pdf  Link otwiera się w nowym oknie
Opis:
The automatic collision avoidance system introduced in this paper is a system constantly calculating optimal manoeuvring method from the risk and economic preference in the ship manoeuvring space where the course change and the deceleration are performed. The authors also propose a system that quantitatively evaluates the collision avoidance manoeuvring results. Based on the evaluation results of this system, the authors are setting parameters so that ship manoeuvring that does not give anxiety to target ships to be avoided is also realized in automatic collision avoidance manoeuvring. In addition, comparison between the manoeuvring results of the automatic collision avoidance system and the veteran captain's manoeuvring results was quantitatively compared by the proposed evaluation system. Verification experiments were successfully conducted to verify the effectiveness of the proposed automatic collision avoidance system on the actual ship navigating in congested waters.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evolutionary Ship Track Planning within Traffic Separation Schemes – Evaluation of Individuals
Autorzy:
Szłapczyński, R.
Tematy:
collision avoidance
Track Planning
ship trajectory
Pokaż więcej
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:
https://bibliotekanauki.pl/articles/116089.pdf  Link otwiera się w nowym oknie
Opis:
The paper presents an extended version of the author’s Evolutionary Sets of Safe Ship Trajectories method. The method plans safe tracks of all ships involved in an encounter including speed reduction maneuvers, if necessary, and taking into account Rule 10 of COLREGS, which specifies ships’ behavior within Traffic Separation Schemes governed by IMO. The paper focuses on the evaluation phase of the evolutionary process and shows how fitness function is designed to compare various possible tracks as well as to assess the quality of a final solution. The impact of the fitness function on the method’s results is illustrated by examples.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation environment in Python for ship encounter situations
Autorzy:
Stolzmann, Ł.
Szłapczyńska, J.
Tematy:
collision avoidance manoeuvre
collision avoidance
simulation study
marine navigational simulators
software design
maritime simulator
ship safety domain
Python
Pokaż więcej
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:
https://bibliotekanauki.pl/articles/59123398.pdf  Link otwiera się w nowym oknie
Opis:
To assess the risk of collision in radar navigation distance-based safety measures such as Distance at the Closest Point of Approach and Time to the Closest Point of Approach are most commonly used. Also Bow Crossing Range and Bow Crossing Time measures are good complement to the picture of the meeting situation. When ship safety domain is considered then Degree of Domain Violation and Time to Domain Violation can be applied. This manuscript provides a description of a ship encounter simulation software tool written in Python accompanied by a case study, implementing all the measures mentioned above. It offers a radar-like Graphical User Interface (GUI), is able to track AIS-based traffic or encounter scenarios stored in local files. The tool features several additional functions e.g. Variable Range Marker (VRM) or Electronic Bearing Line (EBL). The simulator might be a test sandbox for advanced collision avoidance algorithms.
Dostawca treści:
Biblioteka Nauki
Artykuł

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies