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    Wyświetlanie 1-7 z 7
    Tytuł:
    Maritime Communications in RIS System for Inland Navigation
    Autorzy:
    Lisaj, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/116297.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Inland Navigation
    maritime communication
    river information service (RIS)
    Odra River
    GMDSS
    VHF Communication
    Inland Shipping
    Radiocommunication
    Opis:
    The article presents the VHF communications system architecture for inland navigation within the area of operation of the RIS-PL Centre. The author has described the communication system modules used in the RIS on the Lower Oder stretch and presented the relevant equipment specification. The present condition of the system has been described, taking into consideration the location of its components, both in the field and in the environment, of key importance for VHF communication. The feasibility of implementation of GMDSS subsystems for integrated navigational data transmission in maritime and inland navigation at the RIS-PL Centre has been discussed.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2015, 9, 2; 287-291
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    ECDIS Modernization for Enhancing Addressed VHF Communication
    Autorzy:
    Koshevoy, V. M.
    Shyshkin, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/116226.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Navigation with ECDIS
    VHF
    communication
    ECDIS Modernization
    Digital Selective Calling (DSC)
    ECDIS
    watchkeeping
    VHF/DSC
    Opis:
    Standard ECDIS configuration doesn’t foresee interaction with Digital Selective Calling (DSC) device. We propose a reasonable way to eliminate the drawbacks of existing VHF radiotelephony using DSC and obtain new advantages in communication and navigation in the frame of existing conventional installations. The proposed innovation is based on ECDIS software updating and the interconnection to DSC equipment. ECDIS modernization would get rid a navigator of the routine procedures and handling with abstract data replacing them by understandable actions on ECDIS display. The proposed integration gives new abilities for smart addressed VHF/DSC communication by estimating the current navigational situation around the ship that is especially important in congested ports, waterways and poor visibility regarding human factor. The proposed modernization retains in operation all standard DSC and ECDIS functions and provides full compatibility with commonly used non-integrated equipment. Financial expenses to its implementation for ship-owner are minimal due to only software updating and standard cabling.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2015, 9, 3; 327-331
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ adaptacyjnego doboru wielkości przeplotu i parametrów kodu na jakość transmisji w kanale UKF
    Influence of adaptive estimation of interleaver parameters and coding redundancy on transmission quality in VHF channel
    Autorzy:
    Jackowski, S.
    Urban, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/210384.pdf
    Data publikacji:
    2009
    Wydawca:
    Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
    Tematy:
    łączność bezprzewodowa
    kanał radiowy UKF
    przeplot
    kody LDPC
    wireless communication
    VHF channel
    interleaver
    LDPC codes
    Opis:
    W artykule omówiono zagadnienie związane z wpływem przeplotu na rozkład błędów i efektywność kodów korekcyjnych podczas transmisji danych w kanale radiowym UKF. W tym celu wykorzystano kompleksową metodę poprawy jakości transmisji obejmującą bieżącą analizę kanału oraz adaptacyjny dobór wielkości tablicy przeplotu i parametrów kodu korekcyjnego. Do badań symulacyjnych wykorzystano kody LDPC (Low Density Parity Check), które należą do grupy najefektywniejszych kodów i zapewniają bardzo dobre wyniki korekcji błędów dla kanałów o błędach rozproszonych. Uzyskane rezultaty porównano z analogicznymi wynikami otrzymanymi dla rozwiązania firmowego zaimplementowanego w wykorzystywanych w radiostacjach z rodziny PR4G (typu RRC 9200 i RRC 9500), opartego na kodach RS i BCH.
    The problem of interleaver influence on error distributions and effectiveness of error correcting coding during data transmission via VHF channels was discussed in the article. A special method based on analysis of current channel state, adaptive estimation of interleaver parameters and coding redundancy was proposed. LDPC (Low Density Parity Check) codes were applied in research and computer simulation. These codes are considered as the most effective for memoryless channels in which dispersed errors occur. Final simulation results were used to compare with measurement results obtained for PR4G radio (type RRC 9200 and RRC 9500) based on RS and BCH codes.
    Źródło:
    Biuletyn Wojskowej Akademii Technicznej; 2009, 58, 2; 201-215
    1234-5865
    Pojawia się w:
    Biuletyn Wojskowej Akademii Technicznej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Developments of Interface for VHF, MF/HF Communication Using DSC in GMDSS Services in the Framework of E-navigation Concept
    Autorzy:
    Koshevyy, V. M.
    Shyshkin, O. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2063978.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    e-Navigation
    Global Maritime Distress and Safety System
    e-Navigation Concept
    DSC Communication
    Search and Rescue
    VHF/MF/HF
    Vessel Traffic Service
    Opis:
    It is proposed the description of interface for VHF/MF/HF for simplification of DSC communication for implementation in the frame of conception developments in GMDSS services, applied to Maritime Mobile Services. This interface is realized within its integration with INS by an appropriate way on the base of common communication protocol for all three DSC communication sub bands in standardized and harmonized format and significantly simplifies the DSC user interface. It is very important for application in Maritime services, including GMDSS services, VTS services and SAR service. Suggested approach for improving DSC communication is based on the three main outputs of e-navigation strategic direction development related to the integration of communication and navigation equipment/systems, including standardized mode of operation. Implementation of the standardization demands to include in this integration the satellite AIS system. The feasibility of the proposal is supported by the existence of relevant IEC standards and IMO documents.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 3; 593--600
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Standardization of interface for VHF, MF/HF communication using DSC within Itsintegration with INS in the framework of e-Navigation concept
    Autorzy:
    Koshevyy, V.
    Shishkin, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/117067.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    maritime communication
    Digital Selective Calling (DSC)
    DSC VHF
    Automatic Identification System (AIS)
    S-Mode
    e-Navigation
    AIS Messages
    Integrated Navigation System (INS)
    Opis:
    Digital selective calling (DSC) has a certain drawbacks, which have led to the fact that it is practically not used in address radio communications. Attempts to improve it only within the DSC system itself did not lead to any noticeable results due to neglecting of real user needs. The article proposes an approach to improve the user interface of DSC based on the integration of VHF MF/HF DSC equipment with the INS within the three main outputs of strategic direction of e-navigation development related to the integration of communication and navigation systems and, in particular, the S-mode. This approach allows us to significantly simplify the DSC user interface, based on the standardization of DSC integration for all three VHF MF/HF communication sub bands. For implementation such standardization an additional inclusion into the integration a satellite AIS system should be done. The feasibility of the proposal is supported by the existence of relevant IEC standards and IMO documents. The possibility of increasing the cyber security level of AIS messages in this interface is also considered.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 3; 593-596
    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 issues of maritime radiocommunication on the WRC-19
    Autorzy:
    Korcz, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/117284.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Maritime Communication
    Maritime Radiocommunication
    World Radiocommunication Conference (WRC),
    Global Maritime Distress and Safety System (GMDSS)
    Information and Communication Technology (ICT)
    Radio Regulations (RR)
    International Telecommunication Union (ITU)
    VHF Data Exchange System (VDES)
    Opis:
    The article presents maritime radio communication issues being the subject of the World Radiocommunication Conference (WRC) meeting in 2019, including issues related to the modernization of Global Maritime Distress and Safety System (GMDSS). The preparation process for WRC-19 have been presented. The discussed issues were described from the substantive side as well. Finally, the position of IMO in relation to the maritime issues have been discussed. Some aspects of the World Radiocommunication Conference meeting in 2023 (WRC-23) were also presented.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 3; 597-604
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stealthy Information Transmission in the Terrestrial GMDSS Radiotelephone Communication
    Autorzy:
    Shishkin, A. V.
    Koshevoy, V. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/116053.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Global Maritime Distress and Safety System (GMDSS) Audio Watermarking (AW)
    Automatic Radio Telephone Identification System (ARTIS) Very High Frequency (VHF)
    Terrestrial GMDSS Radiotelephone Communication Radiocommunication
    Intersymbol Interference (ISI)
    Orthogonal Frequency Division Multiplexing (OFDM)
    Opis:
    Audio watermarking (AW) technology is considered for stealthy information embedding directly into audio signal. Inherent in analog radiotelephone channel interferences against watermarks are analyzed. Robust encoding/decoding algorithms are presented and appropriate project of AW system named as Automatic Radio Telephone Identification System (ARTIS) is proposed. Experimental results for the practical VHF radio channel are presented. Relating on processing complexity the designed system enables imperceptibly transmit data on a rate up to 260 bit/sec in the standard VHF radio channel. ARTIS provides the full compatibility with the existing radio installation, and doesn’t require replacement of standard VHF transceivers and operational procedures. Besides, automatic identification the system may be used in the special applications, for example, under the threat of terrorist attack; generally contributes to navigation safety and information security.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 4; 541-548
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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