PL
 |
EN
Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 9

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
Wyszukiwano:
w słowach kluczowych:  maritime communication
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
1
Content available Standardization of interface for VHF, MF/HF communication using DSC within Itsintegration with INS in the framework of e-Navigation concept
Koshevyy V., Shishkin O.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
|
2019
|
Vol. 13, no. 3
593--596
EN
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.
2
Content available remote Postęp prac nad projektem e-Navigation
Korcz K.
Zeszyty Naukowe Akademii Morskiej w Gdyni
|
2015
|
nr 90
111--121
PL
W artykule przedstawiono podstawowe założenia oraz elementy projektu Międzynarodowej Organizacji Morskiej (IMO) pod nazwą Strategia e-Navigation oraz zaprezentowano obecny status i przyszłość prac nad tym projektem.
EN
The article presents the basic assumptions and elements of International Maritime Organization (IMO) project “e-Navigation strategy”. The current status and future work on this project have been described as well.
3
Content available Maritime Communications in RIS System for Inland Navigation
Lisaj A.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
|
2015
|
Vol. 9, no. 2
287--291
EN
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.
4
Content available ESABALT Improvement of Situational Awareness in the Baltic with the Use of Crowdsourcing
Thombre S., Guinness R., Chen L., Ruotsalainen P., Kuusniemi H., Uriasz J., Pietrzykowski Z., Laukkanen J., Ghawi P.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
|
2015
|
Vol. 9, no. 2
183--189
EN
This paper presents the key assumptions and preliminary research on an integrated system called ESABALT, for enhancing maritime safety, which incorporates the latest technological advances in positioning, e-Navigation, Earth observation systems and multi-channel cooperative communications. The most novel part of the ESABALT concept, however, is a focus on user-driven crowdsourcing techniques for information gathering and integration. The system will consist of a situational awareness solution for real-time maritime traffic monitoring via utilizing various positioning technologies; an observation system of the marine environment relevant to transportation and accidents including assessing the sea ice, oil spread, waves, wind etc.; and a methodology for context-aware maritime communication with cooperative, multi-channel capabilities. The paper presents the intelligent, novel, user-driven solution and associated services developed in ESABALT for enhancing the maritime safety in the whole Baltic area.
5
Content available remote Maritime Communication, Navigation and Surveillance (CNS)
Ilcev S.D.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
|
2011
|
Vol. 5, no. 1
39--50
EN
This paper introduces development and implementation of Maritime Satellite Communications, Navigation and Surveillance (CNS) of GPS or GLONASS for enhancement of safety and emergency systems including security and control of vessels, logistic and freight at sea, on inland waters and the security of crew and passengers on board ships, cruisers, boats, rigs and hovercrafts. These improvements include many appli-cations for the better management and operation of vessels and they are needed more than ever because of world merchant fleet expansion. Just the top 20 world ships registers have more than 40,000 units under their national flags. Above all, the biggest problem today is that merchant ships and their crews are targets of the types of crime traditionally associated with the maritime industries, such as piracy, robbery and recently, a target for terrorist attacks. Thus, International Maritime Organization (IMO) and flag states will have a vital role in developing International Ship and Port Security (ISPS). The best way to implement ISPS is to design an Approaching and Port Control System (APCS) by special code augmentation satellite CNS for all ships in-cluding tracking and monitoring of all vehicle circulation in and out of the seaport area. The establishment of Maritime CNS is discussed as a part of Global Satellite Augmentation Systems (GSAS) of the US GPS and Russian GLONASS for integration of the existing Regional Satellite Augmentation Systems (RSAS) such as the US WAAS, European EGNOS and Japanese MSAS, and for development new RSAS such as the Russian SDMC, Chinese SNAS, Indian GAGAN and African ASAS. This research has also to include RSAS for Aus-tralia and South America, to meet all requirements for GSAS and to complement the services already provid-ed by Differential GPS (DGPS) for Maritime application of the US Coast Guard by development Local Satel-lite Augmentation System (LSAS) in seaports areas.
6
Content available remote Novel Maritime Communications Technologies
Bekkadal F.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
|
2010
|
Vol. 4, no. 2
129--135
EN
Current maritime systems are to a large extent based on legacy analog VHF radios for ship-to-shore communications near port waters, and relatively low bandwidth digital satellite communications (Sat-Com) for long-range ship-to-ship and ship-to-shore communications. The cost of bandwidth for SatCom net-works is expected to remain high due to the cost of launching satellites into orbit and also due to the stabilizers required for presently available on-board antennas. On the other hand, the legacy VHF system compris-es low bandwidth radios incapable of supporting applications requiring high data rates. Unlike the terrestrial networks, advancement in maritime networks is severely lagging behind its land counterpart. MARINTEK is the principle investigator of the MarCom project, a joint initiative between several national and international R&D institutions, Universities and Colleges, Public Authorities and Industry, funded by the industry itself and The Norwegian Research Council’s MAROFF program, and aiming at developing a novel digital communication system platform to ensure the proliferation of innovative mobile network applications presently being widely implemented on land-based wireless systems.
7
Content available On-board Communication Challenges
Garmann-Johnsen N.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
|
2009
|
Vol. 3, no. 3
333--337
EN
The main objectives of the MarCom project (Maritime Communication, broadband at sea) are to investigate the main user needs and requirements to communication technologies within the maritime community. An important part of this is providing on board services to the crew, passengers and ship operations. In order to facilitate the MarCom project will propose a Generic Scalable Service Platform to handle the ‘nuts-and-bolts’ of communication. Development of this platform presents a series of challenges and considerations presented in this paper. In this paper we will indicate what challenges and possibilities this implicates for a solution for On Board LAN (Local Area Network), SOA (a WebService Oriented Architechture), and wireless communication.
8
Content available Maritime Communication to Support Safe Navigation
Fjortoft K. E., Kvamstad B., Bekkadal F.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
|
2009
|
Vol. 3, no. 1
87--92
EN
The main objectives of the MarCom project (‘Maritime Communications - broadband at sea’) are to investigate the main user needs and communication technologies requirements to accommodate those needs within the maritime community. The project will carry out several pilots to demonstrate the usability of terrestrial wireless technologies in combination with, and in some areas instead of satellite communication (SatCom). The major benefit to the maritime users are expected to be reduced costs, increased bandwidth, Quality-of-Service (QoS) and improved communication security and versatility. The MarCom approach is characterized by combining thorough investigations of present and future user needs through nine scenarios/user cases along with identification of cost-effective communication platforms to match the application requirements being obtained. The MarCom investigations have revealed the bandwidth needs for a set of application groups, and identified the data integrity requirements for each group. Furthermore this paper is addressing the MarCom work with the IMO/IALA e-Navigation strategic initiative in establishing the bandwidth requirements to obtain the major objectives of the e-Navigation concept.
9
Content available remote Transmisja danych przez kanały krótkofalowe
Lindner S., Kaczorek P.
Zeszyty Naukowe Akademii Morskiej w Gdyni
|
2004
|
nr 53
139-146
PL
Do niedawna zakres fal krótkich był wykorzystywany głównie w cywilnej radiokomunikacji morskiej i lotniczej, radiokomunikacji wojskowej oraz radiofonii. Obecnie rozwój metod transmisji cyfrowych w tym zakresie częstotliwości wynika głównie z wymogów łączności wojskowej. W artykule przedstawiono współczesne metody transmisji danych przez kanały HF dla różnych prędkości transmisji z zastosowaniem kodowania splotowego, przeplotu, modulacji wielowartościowych, skramblingu i wykorzystaniem ciągów treningowych w celu wyznaczenia funkcji przejścia kanału.
EN
Until recently times high frequency range was mainly used in civilian maritime and air communication, military communication and radio broadcasting. Nowadays development of methods of digital transmission in this frequency range follows needs of military communication. In this paper there are presented present-day methods of data transmission using HF channels with different speeds with using convolution coding, interleaving, multi-state modulations, scrambling and training sequences which are used to estimate channel pulse response.
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.