• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2011.06a
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• pp.120-122
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• 2011

2010년 7월 1일부터 5톤 이상의 어선에 VHF(DSC) 무선설비 설치가 의무화됨에 따라 어선의 VHF 통신을 위한 육상통신망 구축이 필요하게 되었다. 또한 어선의 VHF 무선설비 설치에 따라 VHF 통신량이 급증할 것으로 예상되고 있다. 본 연구에서는 어선의 VHF 무선설비 설치 현황 및 문제점, 어선의 VHF 교신을 위한 육상통신망 구축 방안, 어선의 VHF 교신을 위한 통신채널 확보 방안 및 VHF DSC 활용 방안에 대하여 분석하였다.

• The Journal of the Korea institute of electronic communication sciences
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• v.9 no.5
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• pp.567-574
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• 2014

In this paper, a VHF antenna with monopole structure is designed and fabricated for marine wireless communication applications. The proposed antenna is based on a monopole design, and composed of circular ring and meander structure for VHF operation which cover VHF frequency bands. To obtain the optimized parameters, we used the simulator, Ansoft's High Frequency Structure Simulator(HFSS) and found the parameters that greatly effect antenna characteristics. Using the obtained parameters, the antenna is fabricated. The experiment results demonstrated that the proposed antenna satisfied the -10 dB impedance bandwidth requirement while covering the VHF bands. And measured characteristics of gain and radiation patterns are obtained for operating bands.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2010.10a
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• pp.593-596
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• 2010

Currently, maritime information service is provided by a variety of equipments such as satellites, radar and VHF devices with independent standards and protocols. However, the increase of vessel traffic and development of global marine industries need an infrastructure providing seamless information transfer for the safety, security and protection of the marine environment. Therefore, we propose features and requirements of future VHF data systems and equipments as a component of e-Navigation.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.05a
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• pp.142-147
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• 2003

A study has designing on the structure of new radio relay for maritime safety communications system with economical and practical useful, that purpose be capable to exceedingly minimum the accident of small ship in sea, that is system. As Receive the urgency frequency from the SSB transceiver in a small fishery that transmit to convert VHF transceiver frequency. Otherwise, the VHF transmitter frequency is converting to the SSB receiver frequency. It has modeling of the bi-directional relay system, that is proposing the methode on the capability to mutual urgency communication between a SSB transceiver ship and VHF transceiver ship by new maritime safety communications system.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.7 no.8
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• pp.1638-1643
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• 2003

A shay has designing on the structure of new radio repeater for maritime safety communications system with economical and practical useful, that purpose be capable to exceedingly minimum the accident of small ship in sea, that is system. As Receive the urgency frequency from the SSB transceiver in a small fishery that transmit to convert VHF transceiver frequency. Otherwise, the VHF transmitter frequency is converting to the SSB receiver frequency. It has modeling of the hi­directional relay system, that is proposing the methode m the capability to mutual urgency communication between a SSB transceiver ship and VHF transceiver ship by new maritime safety communications system.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2011.11a
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• pp.83-85
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• 2011

최근 국제적으로 e-Navigation 구현을 위한 논의가 활발히 이루어지면서 VHF 대역에서 해상 디지털 통신 시스템 도입을 위한 표준 및 권고 개정이 진행되고 있다. 본 논문에서는 ITU-R M.1842-1기반 디지털 VHF 구축을 위하여 국제적으로 진행되고 있는 디지털 VHF 시스템 구현에 대하여 고찰하고 ITU-R 권고에 입각한 해상 디지털 VHF 구축 방안에 대하여 기술하였다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.38C no.4
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• pp.371-377
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• 2013

Fishing boats more than 5 tons is obliged to VHF DSC by Fishing Vessels Act and Vessel Safety Act. The owner of the fishing vessel is equipped to the automatic position reporting device in accordance with the Notice of the Minister of Land, Transport and Maritime Affairs to regulations, shall be ensure to navigations safety and in order to respond quickly in the event of maritime accidents on fishing vessels. East sea set up to start in 2012, which is now underway the annual install plain to the yellow sea and the south sea for VHF coast stations. It is web-based remote operation of DSC on the remote control and monitoring in Fishery Information Communication Station for the coastal VMS construction project. All fishing vessels is VHF DSC in conjunction with the GPS that location information transmitted to the coast station. automatically by the DSC call. This paper has been studied on the communications coverage set up and traffic operation for realization a roaming service by navigation route tracking and RSSI techniques in parallel algorithm refer to VHF DSC coast stations in east sea.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.9 no.4
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• pp.839-843
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• 2005

In this paper, wish to improve reception performance of general receiver manufacturing maritime broadband reception amplifier that can thread easily in VHF transmit-receive equipment into downsize, light weight, low-coat. Manufactured reception amplifier expressed Characteristic that improve reception sensitive 3dBm in $140MHz\~170MHz$ frequency band. Therefore, may use communications equipment that utilize VHF wide-band more efficiently. Also, practical use degree is considered to be very high because telecommunication of good quality is available.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.10a
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• pp.159-162
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• 2007

최근 통신 기술의 발달로 육상이동통신 기술을 해상 및 항공에 확대하려는 시도가 꾸준히 진행되고 있다. 해상 및 항공 통신은 인명 안전을 위한 통신으로 국제 기구에 의해서 최우선적인 보호를 받아 왔다. 그러나 통신 기술의 급속한 발전으로 해상 및 항공 통신망은 기존 음성 위주의 통신망에서 멀티미디어를 처리할 수 있는 디지틀망으로의 전환이 시급히 필요하게 되었다. 해상통신의 경우에는 디지틀 통신 방식을 이용하는 DSC(Digital Selective Calling), AIS(Automatic Identification System) 등을 이미 도입해서 운용 중에 있으며 다른 시스템으로의 확대가 진행 중에 있다. SOLAS 선박뿐 만 아니라 비 SOLAS(Safety Of Life At Sea) 선박들도 디지틀 통신을 활용하면 항행 안전에 매우 도움이 될 것이다. 최근에 ITU-R에서는 VHF(Very High Frequency) 대역에서 데이터 및 이메일 등을 송수신하기 위한 데이터 통신시스템 기술에 대한 논의가 진행 중에 있다. 본고에서는 이 VHF대역 데이터시스템에 대한 기술적 특성을 분석하고 향후 해상통신에서의 디지틀 기술이 도입된 후 전개될 해상통신망에 대해서 기술하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2016.05a
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• pp.276-278
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• 2016

해상교통관제는 RADAR, AIS, CCTV 등 수많은 장비로부터 얻을 수 있는 정보들을 관찰, 판단, 해석하는 상황인식 과정을 거쳐 이를 바탕으로 선박 안전운항에 필요한 '정보제공, 조언 권고, 지시'를 무선통신기기(VHF무선전화)를 통해 전달하는 일련의 과정이다. 선박과의 최종적인 정보교환체계인 무선통신기술은 과학기술의 발전에 힘입어 꾸준히 발전되고 개선돼 오고 있지만, 여전히 많은 한계점들을 내재하고 있다. 이 글을 통해 VHF를 통한 해상교통관제의 한계점들에 대해 알아봄으로써 관제사들의 VHF에 대한 특성 및 한계점에 대한 이해를 돕고 이를 극복하기 위한 방안들을 제시하고자 한다.