• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.06a
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• pp.267-268
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• 2022

Jeju coastal waters are limited to high-risk areas due to the passage of international cruise ships, passenger ships, with a large number of people and fishing boats, or to the jeju port and the jeju civilian-military combined port and near by seas, so a VTS system will be established along jeju and seogwipo coast. There is no accurate standard for determining the number of people required by the maritime traffic control center. Therefore, this study calculated the required operating personnel for control seats on the coast of jeju and seogwipo by using VTS big data to efficiently calculate the workload of maritime traffic control. It is judged that this study can be used basic data for research that sets the standard for calculating the control workload.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.05a
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• pp.98-99
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• 2023

In the maritime digital forensic part, it is very important and difficult process that analysis of data and information with vessel navigation system's binary log data for situation awareness of maritime accident. In recent years, analysis of vessel's navigation system's trajectory information is an essential element of maritime accident investigation. So, we made an experiment about corruption with various memory device in navigation system. The analysis of corruption test in seawater give us important information about the valid pulling time of sunken ship for acquirement useful trajectory information.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.11a
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• pp.746-749
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• 2012

2012년을 마지막으로 국제 해사 기구인 IMO에서는 e-Navigation의 국제적인 프로젝트의 도입여부는 결정이 된다. 특히 e-Navigation의 여러 분야의 기술 중 하나인 IVEF의 표준화도 완료가 된다. 하지만 국내에서의 IVEF 관련 연구는 매우 드물기 때문에 발 빠른 서비스 도입과 취약점 연구에 대한 연구가 시급한 것이 현실이다. 게다가 IVEF 서비스는 shore-based e-Navigation 시스템 내에 포함되기 때문에 VTS간 안전한 해상 정보 교환을 위하여 기본적인 IVEF 기술 분석은 물론이며 내부적, 물리적인 안전한 서비스 제공방안에 대해서도 활발히 연구가 진행되어야 한다. 본 논문에서는 e-Navigation 선박항법 체계에서 데이터 통신 프로토콜로 표준화가 진행 중인 IVEF(Inter-system VTS Exchange Format)를 기반으로 하여 해상교통관제시스템(VTS)과 선박간의 데이터 송수신을 위한 프로토콜의 이용방안 및 그 구현에 관해 설명한다. 구현은 실제 운항중인 선박의 에뮬레이션을 위해 안드로이드 플랫폼이 탑재된 스마트 폰을 이용하였고, VTS 서비스 센터의 에뮬레이션을 위해 데스크톱을 이용하였다.

• Journal of Navigation and Port Research
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• v.40 no.1
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• pp.35-41
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• 2016

Port congestion has been recognized as one of the critical factors for port service competitiveness and port selection criteria. However, congestion ratio, the congestion index currently used by Korea, plays a very limited role in shipping companies' and shippers' selection of port and port authorities' decision making regarding port management and development. This is mainly due to the fact that this ratio is only calculated as the ratio of the number of vessels by each port. Therefore, this study aims to measure service level related to vessel entry and departure in Korea ports by evaluating waiting ratio(WR) according to terminals and vessel types. The results demonstrate that the waiting ratio of containerships and non-containerships is less than 4% and 15% respectively, which satisfies the reasonable level suggested by the UNCTAD and OECD. Port of Pohang is revealed to have the highest WR of 57% and among the terminals, No. 1 Terminal of the Shinhang area has the highest WR. In terms of ship types, WR of Steel Product Carrier is highest, followed by General Cargo Ship and Bulk Carrier at the Pohang Shinhang area. In addition to WR, berth occupancy ratio as well as the number and time of waiting vessels can be utilized to evaluate service level by ports and terminals from port users' perspective, and furthermore, to improve the port management and development policy for port managers or authorities.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2015.10a
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• pp.61-63
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• 2015

본 연구는 모선-자선 구조와 관제센터 지역의 특정 소형어선(선박)에게 클라우드 기반으로 항해에 필요한 전자해도, AIS, RADAR 정보를 제공한다. 현존하는 상용 통신망(3G, 4G 및 RF 네트워크)을 이용하여 시스템을 구축하였고, 실선 테스트를 통하여 본 연구를 통해 개발된 시스템이 정상 동작함을 확인하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.06a
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• pp.475-476
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• 2012

선박에서 AIS 탑재가 확대는 해상에서의 전산 시스템 기술 발전에 큰 영향을 미치고 있다. AIS는 VTS가 선박의 식별, 트랙킹, 모니터링과 같은 일반적으로 알려진 기능을 제공하는 것뿐만 아니라 해상 교통 연구, 통계 분석, 학술 연구에 유용한 실시간 정보를 제공하기도 한다. 그러나 AIS 관측 자료의 신속한 축적은 이루어지고 있지만 VTS 플랫폼 측면에서 선박 위치 자료를 수집하고 분석하는데 한계가 있다. 이러한 관점에서 본 연구는 데이터 마이닝 기술과 GIS기술을 적용하여 AIS 자료를 분석하고자 한다. 이것은 해상 교통 관리 분야에 GIS 분석, 데이터베이스 관리 체계, 데이터 웨어하우징, 데이터 마이닝과 같은 잠재된 가치 정보를 도출하는 기술과 통합하는 시도이다. 현재 몇가지 제약사항이 있지만, 향후 VTS 관제 업무에 유용한 자원을 제공하는 새로운 방안이 될 것이다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2011.06a
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• pp.101-103
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• 2011

해상교통관제 시스템(VTS)는 선박 통항의 안전과 효율을 증진시키고 해상 환경을 보호하는 매우 중요한 역할을 하는 시스템으로서, 최근 국제적으로 e-Navigation을 지향한 최신 IT기술을 반영한 새로운 패러다임 형태로 활발하게 진행되고 있다. 이러한 국제적 변화와 더불어 국내에서도 차세대 VTS 개발이 진행되고 있으며, 물표 추적 및 융합 알고리즘의 국내 환경을 고려한 기술개발 필요성이 제기되어 왔다. 따라서 국내 환경에서 차세대 VTS를 개발하기 위한 추적 및 융합 알고리즘을 설계하고 이를 적용하기 위한 시뮬레이터를 통하여 국내 VTS 센터로부터 추적 및 융합 요구사항을 검증하고자 한다. 따라서 본 논문에서는 차세대 VTS인 u-VTS의 추적 및 융합 요구사항을 검증하기 위하여 시뮬레이터를 구성하고, 이를 통하여 추적 및 융합 성능을 분석하였다.

• Journal of Navigation and Port Research
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• v.37 no.4
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• pp.337-343
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• 2013

To ensure the safety for vessels anchored in stormy weather, duty officer and VTS operator have to frequently check whether their anchors are dragging. To judge dragging of the anchored vessel, it is important for VTS operator to recognize the turning circle and its center of the anchored vessel. The judgement for the anchored vessel dragging can be made by using Radar and AIS. If it is available, CCTV or eye-sighting can be used to know the center of turing circle. However, the VTS system collects individual ship's dynamic information from AIS and ARPA radar and monitors of the anchored vessels, it is difficult for VTS operator not only to get the detailed status information of the vessels, but also to know the center of turning circle. In this study, we propose an efficient algorithm to estimate the center of turning circle of anchored vessel by using the ship's heading and position data, which were from AIS. To verify the effectiveness of the proposed algorithm, the experimental study was made for the anchored vessel under real environments.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.22 no.9
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• pp.1228-1236
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• 2018

Recently, the maritime environment contaminated by the abandoned fishing gears. To solve this problem, there requires systematic management techniques for the fishing gears based on ICT technologies. The existed systems are optionally used by owners, but the systems need to adopt the monitoring and control architecture for integrated national surveillance. To do this, we designed an architecture for effective monitoring and management which collects position and state information using automatic identification buoy (AIB) device, to send the fishing ship, administrator ship, and shore side control center based on the IoT networks. Especially, in this paper, we developed the ENC-based integrated control system for efficient management which provides functions for position indication, state information display and loss alarm of fishing gears. Also, we conduct performance tests for data processing and visualization functions of the system to use a virtual buoy generation module.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.39C no.6
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• pp.466-475
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• 2014

The IVEF service is the draft standard designed for exchange of information on sea traffic between the vessel traffic systems and between the vessels. Standardization of this service is under way as a part of the next-generation navigation system, called e-Navigation. The International Association of Lighthouse Authorities (IALA) suggests, on its recommendation V-145, the IVEF service model and the protocol for provisioning of this service. But the detailed configuration of this service must be designed by the users. This study suggests, based on the basic service model and protocol provided in the recommendation V-145, the implementation of the J-VTS middleware which will facilitate exchange of information on sea traffic. The J-VTS middleware consists of various components for providing the IVEF service and for processing the IVEF message protocols. The vessel traffic systems and the vessels corresponding to upper-layer applications may use the IVEF service with the functions provided by the J-VTS middleware, and the services are designed to be accessed according to the security level of users.