• Journal of Navigation and Port Research
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• v.34 no.5
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• pp.337-342
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• 2010

As AIS AtoN has worked an essential role for aids to navigation, the World-wide IALA-Net has announced plans to build the system. Systematic beacon network may offer opportunities to make an infrastructure for information service and upgrade AtoN service performance. This paper proposes Aids to Navigation information service network for e-NAV. Network based on AIS is consist of AIS AtoN channels as Real, Synthetic or Virtual AIS AtoN. And inner network is consist of Wireless networks as AIS, WCDMA, WIFI, WIBRO, USN or VSAT. Introducing of various network systems can lead to combine and design aomong land, beacon and service network infrastructures.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.11a
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• pp.339-340
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• 2018

한국형 e-Navigation 서비스 개발 중 최적 안전항로 지원서비스는 육상에서 연안여객선과 같은 사고취약 선박이나 서비스 요청 선박에 한해 실시간 선박 교통, 해역 환경, 기상 정보 등 해사 안전정보를 활용한 최적의 안전항로를 지원하는 서비스이다. 본 발표에서 현재 개발 중인 선상지원시스템과 육상지원시스템의 개발 내용을 소개하고, 사용자 만족도 조사결과를 소개하고자 한다.

• Journal of Navigation and Port Research
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• v.47 no.4
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• pp.220-230
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• 2023

Aids to Navigation (AtoN) is an important tool for safe navigation, and the variety of information provided by AtoN is invaluable. The demand for standardized AtoN information for efficient utilization is gradually increasing, and for this purpose, the International Association of Lighthouse Authorities (IALA) has developed S-201, a standard for the management of AtoN information, and recommends its application to member countries. Notably, since Korea defines AtoNs and manages the information according to the Aids to Navigation Act, the need for definition and information management according to the S-201 standard, an international standard, is even greater. Therefore, in this study, according to the recommendation of IALA, we aimed to suggest a way to manage AtoN information by applying the S-201 standard. To this end, after comparing the classification criteria of the AtoN information of the IALA, and that of Korea's classification standards, Korea's AtoN information management plan applying the S-201 standard was presented. The results of this study provide important basic data for managing standardized digital AtoN information that is easy to use worldwide.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2021.11a
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• pp.29-30
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• 2021

시스템 고장 진단은 장비의 상태를 실시간으로 파악하고, 잔여 수명을 예측할 수 있기 때문에 다양한 분야에서 그 중요성이 강조되고 있다. 장비나 센서의 고장을 진단하고 예측할 경우 유지보수를 용이하게 하여 막대한 손실을 막을 수 있고, 기대 수명 또한 연장될 수 있다. 항로표지는 육지와 멀리 떨어진 해상이라는 특수한 작업환경으로 인해 항로표지 유지보수를 위한 많은 시간과 비용이 발생하게 된다. 따라서 본 연구에서는 효율적인 항로표지 유지보수를 위해 항로표지 센서의 고장 유무를 판단할 수 있는 항로표지 센서 고장 진단 프로세스를 위한 후보 기술군에 대해 제안한다.

• Journal of the Korean Society of Marine Environment & Safety
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• v.24 no.6
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• pp.670-678
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• 2018

In coastal waters where the traffic volume of the ship is high, there is a high possibility of a collision accident because complicated encounter situations frequently occurs between ships. To reduce the collision accidents at sea, a quantitative collision risk assessment is required in addition to the navigator's compliance with COLREG. In this study, a new collision risk assessment system was developed to evaluate the collision risk on ship's planned sailing routes. The appropriate collision risk assessment method was proposed on the basis of reviewing existing collision risk assessment models. The system was developed using MATLAB and it consists of three parts: Map, Bumper and Assessment. The developed system was applied to the test sea area with simple computational conditions for testing and to actual sea areas with real computational conditions for validation. The results show the length of own ship, ship's sailing time and sailing routes affect collision risks. The developed system is expected to be helpful for navigators to choose the optimum safe route before sailing.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.11a
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• pp.23-26
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• 2023

In the past, in observing the sea fog on the major sea route and providing real-time information for the safe operation of ships, a visibility sensor or a fog detector with similar operating principles was installed to observe local fog near the place where it was installed. However, it was somewhat unreasonable to immediately provide sea fog observation information to ships and users because the reliability of real-time observation information was somewhat low due to pollution caused by dust, salt, and pollen, or malfunctions of detection sensors by organisms such as spider webs. From 2019 to 2022, the Korea Meteorological Administration and the Ministry of Oceans and Fisheries collaborated to build a more reliable real-time image-based sea fog observation system in 100 regions of the Lighthouse on major sea routes across the country to collect reliable sea fog observation information every 10 minutes and perform real-time public service(webpage).

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.05a
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• pp.295-297
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• 2023

우리나라는 항로표지 배치의 적합성 평가를 주기적으로 실시하고 있다. 항로표지의 배치는 전문가의 주관적 경험에 의존하고 배치있으며 검증에 필요한 전처리 작업은 수작업으로 처리한다. 이 연구에서는 데이터 필터링, 항적 HDG설정 및 입출항분리 작업을 부분적으로 자동화 하면서 HTTP로 연동되는 전처리 시스템을 개발하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2014.10a
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• pp.39-41
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• 2014

최근 유가인상, 운임하락, 온실가스규제 등의 복합적인 요인으로 선박의 운항 효율 관리를 위한 직 간접적인 방법이 개발되고 있으며, 실제로 이를 지원하는 시스템의 탑재사례가 늘고 있다. 본 논문에서는 이러한 경제운항지원시스템들 중에서 실시간 기상정보와 그에 기초한 선박의 부가저항을 고려한 최적의 추천경로를 제공하는 최적 항로 지원 시스템에 대해 기술하고자 한다. 본 시스템은 주어진 ETA (Estimated Time of Arrival) 범위 내에서, 기상예보를 바탕으로 연비관점에서의 최적의 경로 및 엔진출력을 제안하며, 추천경로 및 실제운항경로 사이의 효율비교와 함께 항해정보분석까지 가능한 것을 특징으로 한다. 이러한 시스템은 선박의 연료절감과 함께 운항경로 전반에 대한 포괄적인 이해에 도움을 줄 것으로 기대한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2021.11a
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• pp.27-28
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• 2021

항로표지는 무인으로 운영이 되며 즉각적인 유지 보수등이 어려워 전력 관리 및 안전 운영이 중요한 요소가 된다. 기존 2차 전지관리 시스템의 단점을 보완할 수 있는 기술을 확보 하여 안전한 자율 운영이 가능한 방법을 제시 하고자 한다.

• Journal of Navigation and Port Research
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• v.37 no.5
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• pp.447-452
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• 2013

Vessel traffic system uses multiple sea surveillance radars as a primary sensor to obtain maritime traffic information like as ship's position, speed, course. The systematic errors such as the range bias and the azimuth bias of the two-dimensional radar system can significantly degrade the accuracy of the radar image and target tracking information. Therefore, the systematic errors of the radar system should be corrected precisely in order to provide the accurate target information in the vessel traffic system. In this paper, it is proposed that the method compensates the range bias and the azimuth bias using AtoN information installed at VTS coverage. The radar measurement residual error model is derived from the standard error model of two-dimensional radar measurements and the position information of AtoN, and then the linear Kalman filter is designed for estimation of the systematic errors of the radar system. The proposed method is validated via Monte-Carlo runs. Also, the convergence characteristics of the designed filter and the accuracy of the systematic error estimates according to the number of AtoN information are analyzed.