• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2021.11a
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• pp.37-38
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• 2021

해상에서의 통신은 파도의 움직임에 의해 내륙에서의 통신에 비해 어려움이 있다. 본 논문에서는 Bretschneider 스펙트럼 모델을 이용하여 Open-Ocean에서의 파도의 움직임을 모델링다. 내륙에 위치한 기지국과 내륙으로부터 일정 거리 떨어진 해상에 위치한 부표와의 해상통신 환경을 고려하였으며, 모델링한 파도의 움직임을 바탕으로 부표부터 기지국까지의 거리에 대한 각도와 기지국부터 Block되어 Non-Line of Site(NLoS)된 지점까지의 거리에 대한 각도를 비교함으로써 Continuous-LoS(CLoS)구간을 확보하기 위해 파고 대비 안테나의 높이를 변경하며 비교했다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2010.04a
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• pp.135-138
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• 2010

IMO adopt the revision of SOLAS convention on requirement systems for ECDIS and considered an ECDIS as the major system for E-Navigation strategy on marine transportation safety and environment protection. ENC(Electronic Navigational Chart) as base map of ECDIS is considered as a principal information infrastructure that is essential for navigation tasks. But ENCs are not easy to utilize because they are encoded according to ISO/IEC 8211 file format, and ENCs is required to utilize in parts of Marine GIS and various marine application because they are used for navigational purpose mainly. Meanwhile Google earth is satellite map that Google company service, is utilized in all kinds of industry generally providing local information including satellite image, map, topography, 3D building information, etc. In this paper, we developed KML conversion technology for ENC application. details of development contents consist of ENC loading module and KML conversion module. Also, we applied this conversion technology to Korea ENC and evaluated the results.

• Journal of Satellite, Information and Communications
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• v.10 no.1
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• pp.83-87
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• 2015

LED navigation light installed on the ship performs a important role to ensure safety and prevent collisions with other ships. LED navigation light is mainly used in the night and within the limited visibility by smoke, rainfall. In particular, LED navigation light installed with a clear understanding. LED navigation light is consist of LED module, a control board, a converter, a Fresnel lens, such as enclosure. Russian Society of LED navigation light (RMRS) of the ship to be delivered by drying at Daewoo Shipbuilding & Marine Engineering requires guaranteed reliable products at below $-52^{\circ}C$. conventional LED navigation light has to ensure quality at $-25{\sim}40^{\circ}C$. So, LED navigation light should ensure a problems of random failure or long time operation. In this paper, we present the current status and future plans of reliability so far.

• Journal of Navigation and Port Research
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• v.42 no.6
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• pp.371-377
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• 2018

Navigational equipment standardization mode is a function which is used to standardize key functions, screen display and operation method of major navigation equipment. This is aimed towards to quickly and accurately checking information relevant for safe navigation. Currently, the International Maritime Organization is working on the development of guidelines for the application of navigational equipment in the standardized mode to the task of NCSR Sub-Committee. This study was conducted to investigate users' opinions and preferences in the application of standardization modes and to reflect them in the development of guidelines. In addition, the test program was designed to investigate user preferences for ECDIS among the navigational equipment, such as the types of information and functions that are necessary or preferentially required to perform navigational duties, and the screen configuration. In the study, 333 preference surveys were conducted in 35 countries using a web - based test program. ECDIS users confirmed the content and screen layout of their preferred ECDIS information when conducting navigation duty. The results of the study are significant as they contribute to the development of effective guidelines by presenting user requirements to be considered in the standardization mode.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2019.05a
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• pp.197-199
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• 2019

4차 산업혁명 시대에서 정보는 점점 전자화되고 전자화된 정보의 중요성은 더욱 높아져 가고 있다. 해양분야에서도 이네비게이션을 통하여 전자화된 정보들을 생산하고 효율적으로 관리하기 위해 노력하고 있다. 국제항로표지협회(IALA)는 항로표지와 관련된 전자정보들의 효율적인 관리와 상호교환을 위한 국제 공통의 규격을 S-200으로 제안하고 개발 중에 있다. S-200 중 항로표지와 관련된 정보교환 표준은 S-201로 지정하여 개발 중에 있으며, 해양 PNT 정보와 관련된 전파표지는 S-240(DGNSS 기준국 정보)과 S-245, 246, 247(eLoran 관련 정보)로 지정하여 개발 중에 있다. 본 논문에서는 IALA 주도로 개발 중인 국제 해양 PNT와 관련된 전파표지의 정보교환 표준 현황에 대해 소개한다. 그리고 연구팀에서 제안한 eLoran 관련 정보교환 표준의 개발 결과와 맵 기반 S-200 테스트베드 적용 시험을 통한 검증 결과를 제시한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.11a
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• pp.321-322
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• 2022

In this study, the marine environment is measured and analyzed in real time through the X-band radar installed on the rooftop of the Sokcho Beach administrative Welfare Center and Ulleungdo. Afterwards, the goal is to transmit the analysis results to the client PC. Using electronic maps and electronic navigational charts, the measurement results are overlaid on GIS (spatial information system), real-time data are shared through a website, and information is displayed through a web server. Currently, CCTV information and marine environment information are displayed on the website, but various application studies such as the use of Open AP I will be conducted in the future.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2021.11a
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• pp.23-24
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• 2021

Among the failure cases of the existing navigation aids, the SW and operating system errors of the RTU, the embedded computer for navigation aids, account for about 10%. The causes of SW errors have an infinite number of cases, and it is impossible to correct them all. In this paper, we proposed a paravirtualized multi-OS Docker container utilization technique as a stable operation technique for smart navigational aids, which have recently increased the amount of computation and complexity of SW services that need to be managed. It is proposed to divide containers according to service type, expected load, and error frequency and load the service.

• 한국IT서비스학회:학술대회논문집
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• 2006.11a
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• pp.565-569
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• 2006

E-Navigation은 IMO(국제해사기구, International Maritime Organization)에서 최근 큰 이슈로 떠오르는 선박의 전자항법에 관한 주제로 국내외 선도적 해운 및 선박업체에서 큰 관심을 갖고 있다. 기존의 전자항법은 선박 내의 항해관련 부품 간의 유선통신을 기반으로 한다. 본 연구에서는 한국해양대학교에서 연구하는 유비쿼터스 컴퓨팅을 도입하여 보다 진보적이고 다양한 서비스를 제공할 수 있는 U-Ship의 분야 중 진보된 전자항법서비스 구현을 위한 개념과 표준을 소개한다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.8 no.1
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• pp.200-212
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• 2004

Electronic Navigational Chart is a sophisticated digital chart which contains navigational information such as coastline, depth of water, and nautical mark. It contains high levels of textual, spatial and graphical data, and rapidly replaces traditional paper charts. Although Electronic Navigational Chart has been successfully applied to the navigation of ships, the specific data format, S-57, requires some specialized systems. Furthermore its usage may be limited to specific domains and experts with restrictions. To overcome these limitations resulting from the specific data format, S-57, of Electronic Navigational Chart, more general data format such as XML will be preferred. If Electronic Navigational Chart is transformed into the form of XML, it can be easily accessed and exchanged on the internet. Therefore it may be used for more users and applications. In this paper, we propose an XML. Schema to equivalently represent XML for the S-57 format of Electronic Navigational Chart and develop a program translating the S-57 Electronic Navigational chart to XML document according to the proposed XML schema.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2016.05a
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• pp.312-313
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• 2016

S-100은 다양한 제품사양을 개발하기 위한 범용 지리정보 표준이다. 제품사양은 데이터 산출이나 서비스에 대한 기술적 설명으로 S-100을 기반으로 다양한 제품사양을 개발하는 것은 제품사양 간에 데이터 교환 및 호환성을 보장하여 체계적인 관리를 위함이다. S-100은 묘화절차도 표준 내에 정의하고 있다. 묘화절차는 다수의 묘화계층을 정의하고 최소 묘화 단위 개체마다 묘화계층을 지정하여 화면에 묘화하는 방식이다. 본 연구에서는 표준에서 정의하는 묘화절차를 준수하여 S-100 기반 복수 제품표준 뷰어를 개발하였다. 본 연구의 결과물은 S-100을 준수하는 S-100 기반 복수 제품표준 뷰어로써, S-101 전자해도를 기반으로 S-412 Weather 등의 정보를 묘화절차에 따라 복수 제품 간에 묘화 계층구조를 공유하여 조화롭게 묘화할 수 있도록 구현하였다.