Wyniki wyszukiwania - BazTech

1

Propagation models for the Radiocommunication Event Management System (REMS) in the V-band

Mąka Marcin, Majzner Piotr

Zeszyty Naukowe Akademii Morskiej w Szczecinie

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2019

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nr 58 (130)

55--60

EN

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).

2

Ways to improve radiotelephone procedures training for the navy

Nikolov Zh.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2017

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Vol. 11, no. 1

181--183

EN

Every type of training can be improved. Trying to find ways to do so is a continuous process. The identification and implementation of the most effective of those can only be adequate to the changing environment in case of objective review, comparison and analysis. This paper discusses some approaches whose adoption can lead to the enhancement of the training for radio operators for working in tactical net-works for the Navy. It also shares some experience from the implementation of such methods when training cadets at the Bulgarian Naval Academy.

3

Some aspects of the modernization plan for the GMDSS

Korcz K.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2017

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Vol. 11, no. 1

167--174

EN

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.

4

New learning methods for marine oil spill response training

Halonen J., Lanki A., Rantavuo E.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2017

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Vol. 11, no. 2

339--345

EN

In Finland the Regional Fire and Rescue Services (RFRS) are responsible for near shore oil spill response and shoreline cleanup operations. In addition, they assist in other types of maritime incidents, such as search and rescue operations and fire-fighting on board. These statutory assignments require the RFRS to have capability to act both on land and at sea. As maritime incidents occur infrequently, little routine has been established. In order to improve their performance in maritime operations, the RFRS are participating in a new oil spill training programme to be launched by South-Eastern Finland University of Applied Sciences. This training programme aims to utilize new educational methods; e-learning and simulator based training. In addition to fully exploiting the existing navigational bridge simulator, radio communication simulator and crisis management simulator, an entirely new simulator is developed. This simulator is designed to model the oil recovery process; recovery method, rate and volume in various conditions with different oil types. New simulator enables creation of a comprehensive training programme covering training tasks from a distress call to the completion of an oil spill response operation. Structure of the training programme, as well as the training objectives, are based on the findings from competence and education surveys conducted in spring 2016. In these results, a need for vessel maneuvering and navigation exercises together with actual response measures training were emphasized. Also additional training for maritime radio communication, GMDSS-emergency protocols and collaboration with maritime authorities were seemed important. This paper describes new approach to the maritime operations training designed for rescue authorities, a way of learning by doing, without mobilising the vessels at sea.

5

Development of telexistence on a ship by using satellite communication

Sasaki S., Okazaki T.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2017

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Vol. 11, no. 1

175--180

EN

Nowadays shipping industry has problems such as reduction of mariners, aging of mariners, and labor expenses. To solve the problems, One Person Bridge Operation was developed as navigation supporting system. However, One Person Bridge Operation remained technological problems and one man error. Therefore, in this study, telexistence on a ship was proposed by using satellite communication. Telexistence on a ship is a concept of maneuvering between land and ship with at least two mariners such as navigation officer and helmsman. Navigation officer works on ship as usual and helmsman supports ship from land. In this paper, remote maneuvering system was developed as the first step of telexistence on a ship. For evaluating the effectiveness, ship experiment was carried out. From the result, navigation officer and helmsman could alter ship’s course to 20 degrees within 60 seconds and less than 5% overshoot in the proposed remote maneuvering system.

6

Przygotowania do Światowej Konferencji Radiokomunikacyjnej (WRC-15) w zakresie radiokomunikacji morskiej

Czajkowski J., Korcz K.

Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

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2014

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nr 10

1357--1361

PL

Scharakteryzowano proces przygotowań do Światowej Konferencji Radiokomunikacyjnej WRC-15 na poziomie światowym oraz europejskim. Przedstawiono punkty porządku obrad WRC-15 dotyczące radiokomunikacji morskiej i stanowisko Międzynarodowej Organizacji Morskiej IMO w odniesieniu do tych punktów, które dotyczyły wykorzystania widma radiowego do zapewnienia bezpieczeństwa nawigacji oraz radiokomunikacji morskiej.

EN

The preparation process for WRC Conference on both the global and the European level have been described. The position of the International Maritime Organization on the WRC-15 agenda items concerning the safety of navigation and maritime radiocommunication have been presented as well.

7

The Propagation Characteristic of DGPS Correction Data Signal at Inland Sea - Propagation Characteristic on LF/MF Band Radio Wave

Okuda S., Toba M., Arai Y.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2013

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Vol. 7, no. 4

549--554

EN

User at the Inland Sea requires high position accuracy which is 5 m (2drms) or less. Therefore the position accuracy of standalone GPS is insufficiency. Consequently it needs to use DGPS for navigator sailing the Inland Sea. We executed numerical simulation of the propagation characteristic on the extended line of bridge pier at opposite side from DGPS station, and already confirmed that bit error in DGPS correction data signal occurs, and that correction data could not form by bit error. Furthermore, we carried out numerical simulation of the propagation characteristic of DGPS correction data signal received at sailing through center of the bridge, and solved receiving condition of DGPS correction data signal before and after passing through the bridge. In this paper, we executed to inspect mutually results of electric field intensity simulation for oversea and overland propagation on some sea area of the Inland Sea and measuring results of electric field intensity for DGPS correction data signal, and evaluated the possibility of abnormal propagation comprehensively.

8

Implementation of Multiple Access Techniques Applicable for Maritime Satellite Communications

Ilcev S. D.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2013

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Vol. 7, no. 4

529--540

EN

In this paper are introduced fundamentals, characteristics, advantages and disadvantages of Multiple Access (MA) employed as transmission techniques in the Maritime Mobile Satellite Communications (MMSC) between ships and Coast Earth Station (CES) via Geostationary Earth Orbit (GEO) or Not-GEO satellite constellations. In fixed satellite communication, as a rule, especially in MMSC many users are active at the same time. The problem of simultaneous communications between many single or multipoint mobile satellite users can be solved by using MA technique, such as Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA), Space Division Multiple Access (SDMA) and Random (Packet) Division Multiple Access (RDMA). Since the resources of the systems such as the transmitting power and the bandwidth are limited, it is advisable to use the channels with complete charge and to create a different MA to the channel. This generates a problem of summation and separation of signals in the transmission and reception parts, respectively. Deciding this problem consists in the development of orthogonal channels of transmission in order to divide signals from various users unambiguously on the reception part.

9

Radiokomunikacja morska podczas obrad 16 sesji COM-SAR

Korcz K.

Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

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2012

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nr 11

1636-1641

PL

Omówiono sprawy dotyczące morskich informacji bezpieczeństwa - MSI (Maritime Safety Information) oraz ustalenia zakresu prac związanych z potrzebą przeglądu elementów i procedur GMDSS. Przedstawiono stanowisko Międzynarodowej Organizacji Morskiej - IMO (The International Maritime Organization) dotyczące obrad Światowej Konferencji Radiokomunikacyjnej w zakresie dotyczącym radiokomunikacji morskiej. Podano wybrane zagadnienia dotyczące działania systemów Inmarsat i Cospas/Sarsat. Przedstawiono również postępy prac w przygotowaniu planu implementacji strategii e-nawigacji oraz systemu identyfikacji i śledzenia statków (LRIT).

EN

Issues concerning the Maritime Safety Information (MSC) and a Scoping exercise to establish the need for a review of the elements and procedures of the GMDSS have been described. The position of the International Maritime Organization (IMO) on the agenda items of the World Radiocommunication Conference concerning the maritime radiocommunication have been presented. Selected performance of the Inmarsat and Cospas/Sarsat systems have been given. The progress in the development of an e-navigation strategy implementation plan and Long Range Identification and Tracking System (LRIT) have been presented as well.

10

Tematyka radiokomunikacji morskiej w świetle obrad COMSAR-15

Czajkowski J., Korcz K.

Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

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2011

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nr 5

169-174

PL

Omówiono sprawy dotyczące morskich informacji bezpieczeństwa - MSI (Maritime Safety Information) oraz ustalenia zakresu prac związanych z przeglądem elementów i procedur GMDSS. Przedstawiono stanowisko Międzynarodowej Organizacji Morskiej - IMO (The International Maritime Organization) odnośnie punktów porządku obrad WRC-12 dotyczących radiokomunikacji morskiej. Podano wybrane zagadnienia dotyczące działania systemów Inmarsat i Cospas/Sarsat. Przedstawiono również postępy prac w przygotowaniu planu implementacji strategii e-nawigacji.

EN

Issues concerning the Maritime Safety Information (MSC) and a Scoping exercise to establish the need for a review of the elements and procedures of the GMDSS have been described. The position of the International Maritime Organization (IMO) on the WRC-12 agenda items concerning the maritime radiocommunication have been presented. Selected performance of the Inmarsat and Cospas/Sarsat systems have been given. The progress in the development of an e-navigation strategy implementation plan have been presented as well.

11

Radiokomunikacyjne problemy planu implementacji strategii e-nawigacji

Korcz K.

Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

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2011

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nr 7

694-698

PL

Przedstawiono ogólne założenia, priorytetowe potrzeby użytkowników i cele strategii e-nawigacji w żegludze morskiej. Omówiono kluczowe zagadnienia strategii e-nawigacji. Zaprezentowano stan prac nad wstępnym planem implementacji strategii e-nawigacji. Na koniec przedstawiono również, w kontekście e-nawigacji, przyszłość Światowego Systemu Łączności Alarmowej i Bezpieczeństwa (GMDSS).

EN

The general assumptions, the priority users needs and goals of the marine e-navigation strategy have been presented. The key issues of an e-navigation was described. The status of the preliminary plan of an e-navigation strategy implementation have been presented. At the end the future of the Global Maritime Distress and Safety System (GMDSS) in the context of an e-navigation concept have been presented as well.

12

Przygotowania do Światowej Konferencji Radiokomunikacyjnej (WRC-12) w zakresie radiokomunikacji morskiej

Czajkowski J., Korcz K.

Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

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2010

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nr 11

1691-1695

PL

Przedstawiono historię światowych konferencji radiokomunikacyjnych -WRC (World Radiocommunication Conferences). Omówiono punkty porządku obrad WRC-12 dotyczące radiokomunikacji morskiej. Scharakteryzowano proces przygotowań do WRC-12, na poziomie światowym oraz europejskim. Przedstawiono stanowisko Międzynarodowej Organizacji Morskiej - IMO (The International Maritime Organization) w odniesieniu do punktów porządku obrad WRC-12, dotyczących radiokomunikacji morskiej

EN

The history of World Radiocommunication Conferences (WRC) have been presented. The agenda items of WRC-12 concerning the maritime radiocommunication have been discussed. The preparation process for WRC-12 on both the global and the European level have been described. The position of the International Maritime Organization (IMO) on the WRC-12 agenda items concerning the maritime radiocommunication have been presented as well.

13

Strategia e-nawigacji w żegludze morskiej

Korcz K.

Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

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2009

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nr 5

172-175

PL

Przedstawiono wyniki prac nad strategią e-nawigacji prowadzonych przez Międzynarodową Organizację Morską. Zdefiniowano i przedstawiono zakres oraz cele strategii e-nawigacji. Scharakteryzowano podstawowe potrzeby użytkowników, zasadnicze elementy i proces implementacji e-nawigacji. Omówiono również wybrane aspekty radiokomunikacyjne e-nawigacji.

EN

The International Maritime Organization (IMO) results of the work on E-navigation strategy have been presented. The definition, range and tasks of the e-navigation strategy have been given. The main user needs, the key elements and the implementation process of E-navigation strategy have been described. Some aspects of Radiocommunication concerning the strategy of E-navigation have been presented as well.