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    Wyświetlanie 1-14 z 14
    Tytuł:
    Iskrobezpieczeństwo systemu łączności radiowej z kablem promieniującym
    Intrinsic safety of radio-communication system with radiating cable
    Autorzy:
    Miśkiewicz, K.
    Wojaczek, A.
    Skórka, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/187704.pdf
    Data publikacji:
    2010
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Technik Innowacyjnych EMAG
    Tematy:
    iskrobezpeiczeństwo
    system łączności radiowej
    zagrożenia górnicze
    intrinsic safety
    mining hazards
    radiocommunication system
    Opis:
    W referacie zwrócono uwagę na systemy łączności z wykorzystujące specjalnie instalowane tory przewodowe (wraz ze wzmacniaczami aktywnymi) dla propagacji kierunkowej fal elektromagnetycznych w wyrobiskach. Omówiono problem iskrobezpieczeństwa systemu radiokomunikacyjnego, wykorzystującego przewód promieniujący. Przedstawiono sposób podejścia do tego zagadnienia dla przykładowej struktury takiego systemu eksploatowanego w kopalni metanowej. O iskrobezpieczeństwie całego systemu decydują przede wszystkim parametry zasilacza iskrobezpiecznego zastosowanego dla zasilania wzmacniaczy liniowych systemu telekomunikacyjnego.
    There has been paid attention in the paper to communication systems using specially installed cable circuits (including active amplifiers) for directional electromagnetic wave propagation in mine workings. The problem of intrinsic safety of a radio-communication system using a radiating cable has been discussed. A manner of approach to this problem has been presented for an example of such system which operates in a methane mine. The parameters of an intrinsically safe supply unit for line amplifiers of the telecommunication system decide mainly about intrinsic safety of the whole system.
    Źródło:
    Mechanizacja i Automatyzacja Górnictwa; 2010, R. 48, nr 1, 1; 36-41
    0208-7448
    Pojawia się w:
    Mechanizacja i Automatyzacja Górnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A simulation model of Radiocommunication Events Management
    Autorzy:
    Majzner, P.
    Mąka, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/360545.pdf
    Data publikacji:
    2014
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    radiocommunication
    GMDSS
    Radiocommunication Events Management System
    Opis:
    The presented simulation model of radiocommunication events management allows to investigate problems occurring in marine radiocommunications. Based on a variety of research methods, we focus on the method of computer-based simulation, and describe the stages of construction and structure of the simulation model. Finally, we discuss possible applications of the developed model.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2014, 37 (109); 61-65
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analytical - diffraction model of V-band propagation for the Radiocommunication Events Management System (REMS)
    Autorzy:
    Mąka, Marcin
    Majzner, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/320542.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Forum Nawigacyjne
    Tematy:
    radiocommunication
    Radiocommunication Events Management System
    GMDSS
    propagation
    Opis:
    The paper presents an analytical-diffraction propagation model for the needs of the Radiocommunication Events Management System, for coast and ship radio stations in sea area A1. The V-wave propagation in sea area 1 has been analyzed as part of an analysis of ranges of particular radio stations and their ability to establish radio contact. The theoretical basis and assumptions on which the model structure design process is based have been presented. Methods of modelling and presentation of dislocation of particular radio stations and their ranges have been discussed.
    Źródło:
    Annual of Navigation; 2019, 26; 127-135
    1640-8632
    Pojawia się w:
    Annual of Navigation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Radiocommunication event allocation model for a selected sea area
    Autorzy:
    Mąka, M.
    Majzner, P.
    Lisaj, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/135561.pdf
    Data publikacji:
    2017
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    radiocommunication
    Radiocommunication Events Management System
    GMDSS
    allocation model
    Opis:
    This article presents the structure of a model of the allocation of radiocommunication events at coastal radio stations, land-based satellite stations and on vessels in sea area A3. The propagation of radio waves in the HF band has been analyzed to examine the range of various radio stations and their capabilities of establishing communication between each other. We also present methods of modeling and displaying the deployment of individual stations, of presenting radiocommunication events as a function of time using time diagrams, as well as the manner of the chronological presentation of radiocommunication events and related decisions. It has been shown that there is a relationship between the effectiveness of communication and propagation conditions that is strongly dependent on the time-of-day. We present the need to develop a decision support system for the radio operator on the bridge.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2017, 50 (122); 52-58
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The radio operator decision support system model
    Autorzy:
    Mąka, M.
    Majzner, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/134989.pdf
    Data publikacji:
    2017
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    radiocommunication
    Radiocommunication Events Management System
    GMDSS
    decision model
    graph theory
    signals
    Opis:
    The article proposes a model of the system supporting the decision-making process relating to the radio operator on board a ship after a distress alert is received by a Digital Selective Calling (DSC) controller working on VHF channel 70. The model is aimed at the implementation into the system of radiocommunication event management. The system takes into account the existing Radio Regulations. The model makes use of Petri nets, which are elements of graph theory. The time domain is comprised in the developed graph, and the states (places) and transitions capable of autonomous functioning are separated, as are those places and transitions requiring direct operator action based on empirical knowledge.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2017, 52 (124); 120-127
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Propagation models for the Radiocommunication Event Management System (REMS) in the V-band
    Autorzy:
    Mąka, Marcin
    Majzner, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/135635.pdf
    Data publikacji:
    2019
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    radiocommunication
    Radiocommunication Events Management System (REMS)
    Global Maritime Distress and Safety System (GMDSS)
    propagation
    model
    ranges of v-band
    Opis:
    This paper presents an analytical method for determining marine VHF communication bands based on the propagation model included in the International Telecommunication Union (ITU) recommendations. The developed method to determine communication bands was compared with the model recommended by the International Maritime Organization (IMO). The usefulness of the method developed by the authors has been demonstrated for the needs of the Radiocommunication Events Management System (REMS).
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2019, 58 (130); 55-60
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Możliwości realizacji systemów radiowych w kopalniach podziemnych
    Possible solutions of underground radiocommunication systems
    Autorzy:
    Wojaczek, A.
    Kołodziejczyk, P.
    Miśkiewicz, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/113283.pdf
    Data publikacji:
    2018
    Wydawca:
    STE GROUP
    Tematy:
    radiokomunikacja w kopalniach podziemnych
    system TTE
    TTW
    TTA
    radiocommunication in underground mines
    TTE system
    Opis:
    Przedstawiono ograniczenia i możliwości realizacji systemów radiokomunikacyjnych w kopalniach podziemnych. Opisano systemy TTE, TTW, TTA oraz systemy hybrydowe. Pokazano możliwe do zastosowania zakresy częstotliwości oraz protokoły transmisyjne.
    This paper presents the limitations and possibilities of implementing radiocommunication systems in underground mines. The TTE, TTW, TTA systems and hybrid systems have also been described in details. Moreover, the issues of possible frequency ranges and transmission protocols were presented.
    Źródło:
    Systemy Wspomagania w Inżynierii Produkcji; 2018, 7, 1; 256-268
    2391-9361
    Pojawia się w:
    Systemy Wspomagania w Inżynierii Produkcji
    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:
    Key points of the modernized GMDSS system
    Autorzy:
    Korcz, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/24201457.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    e-navigation solutions
    GMDSS modernization
    GMDSS equipment
    navigational data
    VHF data exchange system
    IRIDIUM satellite system
    world radiocommunication conference
    Opis:
    The article presents the reasons and the entire process of work on the modernization of the GMDSS system. The main legal and technical aspects of the modernization of the GMDSS system were discussed as well. New devices and systems of the modernized GMDSS system were described. On the basis of the key points of the modernized GMDSS, an attempt was made to evaluate the entire project.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 1; 139--146
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    SMART digital selective calling user interface on the base of Integration maritime navigation and radiocommunication equipment
    Autorzy:
    Koshevyy, V. M.
    Konovets, V. I.
    Shyshkin, O. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/1841444.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    e-Navigation
    human-machine interface
    digital selective calling
    Automatic Identification System
    Global Maritime Distress and Safety System
    radiocommunication
    digital Interface
    Opis:
    High level solution S4 of the IMO E-navigation Strategy Implementation Plan provides integration and presentation of available information in graphical displays received via communication equipment. At the same time, the problem of the correct application of digital selective calling (DSC) operational procedures in navigation practice has existed since the introduction of the GMDSS and requires a solution. This problem may be resolved on the base of integration maritime navigation and radiocommunication equipment. The article proposes approach for practical realization of this integration by implementing a SMART (specific, measurable, assignable, realistic, and timely) DSC interface within S4. Using this approach the practical realisation integration of AIS – DSC – Information display was implemented. It makes possible implementation of user-friendly human-machine interface (HMI) for navigator. An experimental prototype of communication graphical interface is designed, which allows effective decision-making on radio communication control/monitoring. The use IEC 61162-1/2 (Maritime navigation and radiocommunication equipment – Digital interfaces) data transfer provides standard inter-module connections and eliminates the negative impact of the equipment diversity from different manufacturers by means uniform HMI implementation.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 2; 291-297
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    GPS Synchronization of Audio Watermarks in the Maritime Automatically Identified Radiotelephony
    Autorzy:
    Shyshkin, O. V.
    Koshevyy, V. M.
    Ryaboshapka, I. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/1841447.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    e-Navigation
    audio watermarking
    GPS Synchronization
    Global Positioning System
    VHF
    radiotelephony
    maritime radiocommunication
    Fast Fourier Transformation
    Opis:
    Audio watermarking (AW) technology in cooperation with GPS synchronization of watermarked frames is proposed for application in the maritime VHF communication for automatic identification of radiotelephone messages. Automatic identification ensures efficient messaging from the very beginning of a radio transmission, while eliminating the human factor inherent in voice identification. AW refers to inaudible embedding of additional data just into the post microphone signal, using standard marine installations without any additional radio channel resources. The designed algorithm is based on data embedding in the Fast Fourier Transform domain with the rate of 32 bit/s. The experimental prototype of the device is designed on the base of micro-controller development kit 32F429IDISCOVERY and GPS module NEO-6M-0-001. Designed system, applied for automatic ship’s identification, provides the full compatibility with the existing radio installation, and does not require replacement of standard VHF transceivers and operational procedures. Besides automatic identification the system may be used in the special applications, for example, by 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; 2021, 15, 2; 307-312
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Satellite-based AIS and its Comparison with LRIT
    Autorzy:
    Cheng, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/117541.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Automatic Identification System (AIS)
    Long Range Identification and Tracking (LRIT)
    Satellite-Based AIS
    Navigational Tools
    Radiocommunication
    Monitoring Coverage
    communication scheme
    Identification System
    Opis:
    The satellite-based Automatic Identification System (AIS) system has continuously been developed by the shipping industry in recent years. This paper introduces the satellite-based AIS including the concept, the system structure, the development and its new applications. The Long Range Identification and Tracking (LRIT) system, which is mandatory to be required on certain classes of ships engaged on international voyages to report their position at least every six hours using onboard communication means however, has similar kind of function of ship monitoring with the satellite-based AIS system. Based on the basic introduction of the LRIT system, this paper presents the comprehensive comparison between satellite-based AIS and LRIT in terms of the ship’s cost, the communication scheme, the monitoring coverage, the information details and the information creditability. The conclusion that the satellite-based AIS should be encouraged to effectively play a complement role to the LRIT system is advanced in the paper.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 2; 183-187
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Some aspects of the modernization plan for the GMDSS
    Autorzy:
    Korcz, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/116379.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Global Maritime Distress and Safety System (GMDSS)
    communication
    Modernization Plan for the GMDSS
    e-Navigation
    Navigational Data (NAVDAT)
    Automatic Link Establishment (ALE)
    SOLAS Convention
    Radiocommunication
    Opis:
    Preliminary Modernization Plan for the Global Maritime Distress and Safety System (GMDSS) have been presented. On the base of a current status of the GMDSS and the discussion on a modernization topic some aspects of the Modernization Plan for the GMDSS, both regulatory and technical nature, have been described. Future work on the Modernization Plan for the GMDSS have been discussed as well.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2017, 11, 1; 167-174
    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 1-14 z 14

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