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    Wyświetlanie 1-7 z 7
    Tytuł:
    Comparative analyses of manoeuvring patterns in real and virtual atoN environment
    Autorzy:
    Mraković, I.
    Bošnjak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/24201422.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    aids to navigation
    situational awareness at sea
    ECDIS training
    human error
    ship manoeuvring simulation
    V-AtoN environment
    irtual AtoN
    nautical simulator
    Opis:
    This paper presents a comparative analysis of manoeuvring patterns through the fairway which is marked with physical and virtual Aids to Navigation (AtoN). The impact of V-AtoN environment on decision-making and on consequent manoeuvres has never been studied in such a way. The results published in this paper were obtained using TRANSAS Navi Trainer 5000 and TRANSAS ECDIS 4000 simulators where 12 deck officers with at least 5 years of sea service participated. The results of the study indicate that there is a significant difference in manoeuvring patterns between the two environments. In case of virtual environment, more intense drift angles, ROTs as well as XTDs are observed. The paper demonstrates significant impact of virtual environment on behaviour of OOW.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 3; 617--623
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Correlation of Virtual Aids to Navigation to the Physical Environment
    Autorzy:
    Wright, R.G.
    Baldauf, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/116999.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Aids to Navigation (AtoN)
    Virtual Aids to Navigation
    physical environment
    AIS Data
    Electronic Chart Display and Information System (ECDIS) Landmarks
    marine navigation
    electronic navigation
    Opis:
    Virtual electronic aids to navigation are being introduced into the present short range aids to navigation system in the form of Automated Information System radio-based aids. Research is also underway into the development of their equivalents for use in regions that feature hostile environments, are poorly charted and lack any infrastructure whatsoever to support traditional or radio navigation aids. Such aids are entirely virtual in nature and exist only as a digital data object that resides within an electronic navigation chart for display to mariners through an Electronic Chart Display and Information System. They are at present experimental in nature, and are not intended to replace existing physical or radio-based aids to navigation. Results of research are described in terms of fulfilling traditional navigation aid functions and the development of new functions that are only possible using virtual aids. Their advantages in design and implementation are highlighted, as are their limitations and shortcomings as compared to present methodologies. Notable, however, is the approach used to overcome limitations and shortcomings by considering attributes of the physical environment to ensure their proper location and display of correct characteristics. Such an approach is unique in the modern world, yet it emulates ancient methods of navigation using known landmarks and terrain features.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 2; 287-299
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Navigation infrastructure of the Northern Sea Route
    Autorzy:
    Pastusiak, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/135311.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    Northern Sea Route
    navigation infrastructure
    voyage planning
    Aids to Navigation
    quality assessment
    radio-navigational systems
    Opis:
    The reduction of sea ice area in the Arctic has increased the availability of the Russian Arctic seas for navigation by vessels of relatively low ice class. The signing of the Act on the Northern Sea Route (NSR) by the President of the Russian Federation has created the possibility for ships from countries other than Russia to use the NSR. However, the NSR is very poorly recognized in terms of navigation by countries other than Russia. The author of the paper analyzed the NSR navigation infrastructure components in terms of the reliability of the information provided by the main producers of nautical publications for initial voyage planning. For the purpose of this analysis an indicator of the quality of the navigation infrastructure was developed. The value of this indicator, obtained on the basis of the above analysis, is low. Navigators that collect information during the initial stage of voyage planning may be misled if they use nautical publications originating from only one global producer of charts and publications. If the navigators act in accordance with good seamanship and familiarize themselves with information from two or three global producers of nautical publications, they may be disoriented due to the receipt of divergent information. It seems that before the voyage begins and preferably before planning a trip, the master or owner of the vessel intending to carry out a voyage by the NSR should first use the most current local knowledge in the possession of the Northern Sea Route Administration. This is also where information can be found as to where to obtain the most current and reliable information for initial voyage planning.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2015, 44 (116); 74-82
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Protected AIS: a demonstration of capability scheme to provide authentication and message integrity
    Autorzy:
    Kessler, G. C.
    Powiązania:
    https://bibliotekanauki.pl/articles/116876.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    cyber security
    Automatic Identification System (AIS)
    Protected AIS (pAIS)
    message integrity
    authentication
    virtual aids to navigation
    Pretty Good Privacy (PGP)
    cryptography
    Opis:
    The Automatic Identification System (AIS) provides situational awareness for vessels at sea. AIS has a number of known security vulnerabilities that can lead to a several types of attacks on AIS, including the ability to create ghost vessels, false warning or meteorological messages, or bogus virtual aids-to-navigation (AtoN). A number of methods, with varying levels of complexity, have been proposed to better secure AIS and, indeed, emerging AIS protocols will implement some of these mechanisms. Nevertheless, little has been done to secure the current standards, which will remain in use for some time. This paper presents Protected AIS (pAIS), a demonstration of capability implementation using public-key cryptography methods to address several AIS security vulnerabilities, maintain backward compatibility, and be able to interoperate with non-pAIS devices.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2020, 14, 2; 279-286
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Real-time Risk Assessment for Aids to Navigation Using Fuzzy-FSA on Three-Dimensional Simulation System
    Autorzy:
    Chen, J.
    Chen, T.
    Shi, C.
    Jia, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/117294.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    risk assessment
    Real-Time Risk Assessment
    Formal Safety Assessment (FSA)
    Fuzzy-FSA
    Aids to Navigation (AtoN)
    Three-Dimensional Simulation System
    Quantitative Standard
    Yangtze River Estuary
    Opis:
    The risk level of the Aids to Navigation (AtoNs) can reflect the ship navigation safety level in the channel to some extent. In order to appreciate the risk level of the aids to navigation (AtoNs) in a navigation channel and to provide some decision‐making suggestions for the AtoNs Maintenance and Management Department, the risk assessment index system of the AtoNs was built considering the advanced experience of IALA. Under the Formal Safety Assessment frame, taking the advantages of the fuzzy comprehensive evaluation method, the fuzzy‐FSA model of risk assessment for aids to navigation was established. The model was implemented for the assessment of aids to navigation in Shanghai area based on the aids to navigation three‐dimensional simulation system. The real‐time data were extracted from the existing information system of aids to navigation, and the real‐time risk assessment for aids to navigation of the chosen channel was performed on platform of the three‐dimensional simulation system, with the risk assessment software. Specifically, the deep‐water channel of the Yangtze River estuary was taken as an example to illustrate the general assessment procedure. The method proposed presents practical significance and application prospect on the maintenance and management of the aids to navigation.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 2; 197-203
    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 effect of space weather on maritime aids-to-navigation service provision
    Autorzy:
    Grant, A.
    Shaw, G.
    Ward, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/320917.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Forum Nawigacyjne
    Tematy:
    marine aids to navigation
    space weather
    solar activity
    Opis:
    The General Lighthouse Authorities of the United Kingdom and Ireland (GLA) provide marine Aids-to-Navigation (AtoNs) for the benefit and safety of all mariners within their waters. These AtoNs include traditional lighthouses, buoys and various radionavigation systems. It is recognised that GPS, or more generally Global Navigation Satellite Systems (GNSS), have become the primary means of obtaining Position, Navigation and Timing (PNT) information at sea. Mariners may have come to believe that GPS is infallible, yet it is known to be vulnerable to solar activity, interference and system failures. The Sun continuously releases random bursts of energy and highly charged particles. The impact of these emissions on the Earth is known as space weather. Bursts of electromagnetic energy can result in radio blackouts; bursts of high energy particles can increase ionising radiation and affect space craft performance; and bursts of magnetised plasma can result in the degradation and potential loss of radionavigation signals on Earth. The amount of solar activity is linked with the natural sunspot cycle, which shows the number of sunspots peak approximately every 11 years, with the next peak due in 2013. Sunspots occur almost continuously, but normally give rise to weak solar events that generally go by unnoticed. However significant storms can occur at any time and as we approach peak activity, the number of space weather events will increase. AtoNs generally report their position using radio systems, whether through the Automatic Identification System (AIS), public networks or dedicated links; and often use GNSS to calculate their position and to obtain timing information. Mariners use GNSS for PNT information; with this information integrated into many different bridge systems. Powerful solar storms can affect GNSS performance and the reception of their signals, which may lead to different correlated events, both on and off the ship. During very extreme and very rare storms, national power systems may be switched off to protect the infrastructure which would clearly affect those services relying on mains power without backup. This paper reports the output of a study into the potential effects of space weather on GLA AtoN service provision and presents mitigating actions, where appropriate. The outcome of this study will help the GLA to continue to provide the highest level of AtoN availability, helping to ensure the safety of all mariners.
    Źródło:
    Annual of Navigation; 2012, No. 19, part 1; 49-66
    1640-8632
    Pojawia się w:
    Annual of Navigation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Using elements of integral calculus in the process of optimising the configuration of navigation positioning systems
    Autorzy:
    Czaplewski, K.
    Świerczyński, S.
    Zwolan, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/135468.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    marine navigation
    integral calculus
    aids to navigation
    land radio-navigation system
    navigation– hydrographic support
    accuracy of navigation
    criteria for evaluating navigation systems
    Opis:
    This paper presents the authors’ reflections on using integral calculus when preparing the process of locating single ground-based chains of positioning systems in marine navigation. These reflections are purely theoretical and presented research results apply to a hypothetical navigation system that operates based on the ratio of distances, which is regarded as a navigation parameter.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 45 (117); 37-43
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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