항공 우주 해상 : 해상 데이터 통합 관리 및 상호교환을 위한 선박 통신 시스템 개발

강남선 ( Nam Seon Kang ),김지구 ( Ji Goo Kim ),이선호 ( Seon Ho Lee ) 한국항행학회 2015 韓國航行學會論文誌 Vol.19 No.5

본 논문에서는 선박운항에서 생성되는 데이터와 육상에서 안전운항, 선박관리 등을 위한 데이터를 통합 관리하고 상호 교환을 위하여 고효율의 압축 기술, 최소비용 알고리즘과 FBB 위성통신 자동접속 모듈을 적용하여 효율적인 해사통신 서비스를 위한 선박 통신 시스템을 설계하고 모듈별 기능을 구현하였다. 개발된 모듈을 KTsat 금산위성지구국에서 성능시험 한 결과 평균 전송속도가 7 kB/S로 기존 상용제품 5 kB/S에 비해 개선되었으며 현재 해상업무에서 가장 많이 사용되는 오피스 파일의 압축률과 전송성능이 기존대비 약 2배정도 개선됨을 확인하였다. In this study, for integrated management and inter-exchange of operational data generated by ships and land-side information on safe and business, a vessel communication system with modular functions was designed that applied high efficiency compression, least-cost algorithms and Inmarsat FBB connection automation system. Performance test at the KTsat Kumsan satellite earth station; system was found to delivered an average transfer speed of 7 kB/S, which was significant improvement from the existing commercial product’s average speed of 5 kB/S. It also delivered twice the efficiency of the existing product in terms of compression rate and transfer of the most widely used office files in maritime businesses.

AIS Implementation and Experiment with the Korean Satellite

Han-Jin Lee,Changmin Lee,Chang-Gu Kang 한국항해항만학회 2000 한국항해항만학회 학술대회논문집 Vol.6 No.-

In this paper, authors introduce about Wide Range Vessel Traffic Service (VTS) system using Automatic Identification System (AIS). In order to develop the prototype of Wide Range VTS system, Korean satellite is used for data communication system for AIS. In this system, ship position obtained by using GPS is reported automatically to VTS center through Korean satellite. By using this system, VTS center can cover more wide area than the case using radar only. And the uncertainty of information is decrease. The results of test show the good possibility of VTS using satellite and AIS.

식공간의 구조적 이해 I

신항식(Hang-Sik Shin) 한국식공간학회 2007 식공간연구 Vol.2 No.1

The foods and drinks and dietary life spaces are not only material things but mental or spiritual ones. The foods and drinks are not freely distributed on the table but associated each other following the rule which an anthropological society has made for its dietary culture. I investigate this dietary life space rule of Korean home table menu. Firstly, I explain my scientific point of view and structuralist method. Like language, man grows up with foods and dies with. We cannot accumulate sufficiently such kind of data because of its deductive character which make us to give firstly a perspective and criteria for finding its structure. I reduce dietary life to home table and its foods and driks. In this reduction, home table menu is regarded as a sociolect on which Roland Barthes has already explained in his System de la Mode. The Korean home table menu compose of boiled rice, soup, side dishes, stew, fried or baked foods and drinking water. These dietary elements of Korean table make together binary system of /dried/ vs /watery/ and /hot/ vs /cold/. The boiled rice is dried and hot, the soup is watery and hot, the side dishes are dried and cold. The stew and the fried or baked foods are mediators for these elements. The stew is less watery than soup and neutralizes some roles of side dishes and soup. For the other hand, the fried or baked foods which have a character of dried but hot neutralize some roles of side dishes. That is to say, they neutralize the elementary-binary system of boiled rice, soup and side dishes. Korean domestic dietary life space is a system where all the elements have its function each other. If some foods or drinks penetrate in this system and continue to resist to some function of the system, Korean dietary life space could change. On the other hand, the vessels are more sensible to the change than foods and drinks. Korean vessels (and bowls) have for a long time represented their psychological power with dimension(height and width). Korean traditional rice and soup's bowl were higher than others. But today, their dimension became small as opposed to those of side dishes. These side dishes' vessels became wider than before in the same manner of the stew's and the fried foods'. It seems that this phenomenon represent a democratic aspect of Korean eating culture today. The Korean system of domestic dietary vessels is characterized by its width. I deduce this conclusion, with the structural perspective and my inference, from inductive cases' data. These would be corroborated and corrected by a posteriori studies.

WAVE 통신을 활용한 소형선박의 충돌예방 알고리즘 구축에 관한 연구

이명기,박영수,강원식 해양환경안전학회 2019 해양환경안전학회지 Vol.25 No.1

In December 2017, many collision accidents of small vessels, such as those between oil refineries and fishing boats, occurred near Yeonghung-do in Incheon. In order to prevent marine casualties from small vessels, the government is striving to improve the safety capabilities of ship operators by strengthening education and improving the working environment. They are providing education and refining training regulations for fishermen operating vessels under 5 tons. However, the situation includes certain vulnerabilities. In this study, we propose a collision prevention algorithm for small vessels using the Wireless Access in Vehicular Environments (WAVE) communication system, which is a new communication technique to prevent collisions with small ships. The collision avoidance algorithm used is based on DCPA/TCPA. Research analyses, simulation experiments and questionnaires have been conducted to define the criteria of DCPA/TCPA. As a result, the standard for DCPA was 8(La+Lb) and for TCPA was 2.5 min. Three different accident cases were selected, and this algorithm was applied to confirm alarm responses at certain times. This algorithm can provide information to the operators of small ships in advance to help them recognize potential collision situations. 2017년 12월 인천의 영흥도에서 발생한 급유선과 낚시어선의 충돌사고를 비롯하여 소형 어선의 충돌 사고가 잇따라 발생하고 있다. 해양수산부에서 이러한 소형 어선의 해양사고를 예방하기 위하여 5톤 미만의 어선원에 대한 교육·훈련 규정 마련 등 교육 강화 및 근로환경 개선 등 선박종사자의 안전역량 제고를 위해 노력하고 있으나, 여전히 소형 선박은 해양사고에 매우 취약한 실정이다. 본 연구에서는 소형선박의 충돌 사고를 예방하기 위하여 새로운 통신 기법인 차량용 무선통신(WAVE 통신)을 활용한 소형 선박을 위한 충돌 예방 알고리즘을 구축하고자 하였다. 충돌 예방 알고리즘은 DCPA/TCPA를 기반으로 구성되었으며, DCPA/TCPA의 기준 설정을 위하여 선행 연구 분석, 시뮬레이션 실험 및 설문조사를 실시하였다. 그 결과 DCPA , TCPA 2.5min의 기준을 적용하였다. 각각 다른 조우 상황의 3가지 사고 사례를 선별한 후 구성된 알고리즘을 적용하여 어느 시기에 경보가 발생하는지 확인하였다. 추후에 실선 적용을 통하여 문제점을 식별하고 알고리즘을 고도화한다면 소형 선박의 운항자가 충돌 상황을 사전에 인지하는데 정보를 제공할 수 있다.

세월호 참사 당시 재난통신 행위자-네트워크 구성의 실패

김성원(Sung-Won KIM) 한국과학기술학회 2021 과학기술학연구 Vol.21 No.2

2014년 4월 16일 발생한 세월호 참사 당시 재난 통신 행위자-네트워크의 구성 실패는 구조실패의 중요한 요인으로 작용하였다. 그렇지만 세월호 참사 당시 재난 통신 행위자-네트워크 구성 실패를 본격적으로 규명한 연구는 찾아보기 쉽지 않다. 이 글에서는 행위자-네트워크 이론(actor-network theory)를 활용하여 세월호 참사 당시 나타난 재난 통신 행위자-네트워크의 구성 실패를 살펴보고 그 함의를 규명한다. 이를 통해 전 세계 해상조난 및 안전제도(GMDSS) 도입 이후 해상 통신 행위자-네트워크에 초단파(VHF) 통신망, 중단파(SSB) 통신망, INMARSAT, KOSNET 등 위성통신망, 극초단파 대역 주파수공용통신(TRS) 등 다양한 역사적 배경을 지닌 비동질적인 네트워크가 혼재되고 중첩되었다는 점을 주목한다. 또한 참사 당시 세월호와 구조세력은 비동질적이고 국소적인 통신 네트워크를 통해 부분적으로만 연결되면서 재난 상황 정보의 완전한 공유를 통해 효율적인 구조 활동을 펼치지 못했다는 점도 조명한다. 이를 통해 진도 VTS가 세월호 참사 당시 다양하고 비동질적이며 국소적인 통신 행위자-네트워크를 매개하는 의무통과점으로 기능하지 못하고 해경이 세월호 구조를 적절하게 지휘할 계산의 중심을 형성하지 못한 것이 세월호 참사 당시 재난 통신 행위자-네트워크의 구성이 실패하는 큰 요인이 되었음을 입증한다. The failure of the construction of communication actor-network in the sinking of MV Sewol disaster was one of the most influential reasons for the failed rescue on April 16, 2014. However, it is difficult to find previous studies that have concretely analyzed the failure of the construction of communication actor-network in the sinking of MV Sewol. In this paper, I’ll analyze the failure of the construction of communication actor-network for MV Sewol disaster by applying actor-network theory and illuminating its implications. I’ll show that the maritime communication actor-network has become a mixture and superposition of non-homogeneous networks, such as VHF, SSB, INMARSAT, KOSNET, and TRS, which have had diverse historical backgrounds since the introduction of the Global Maritime Distress and Safety System (GMDSS) in the early 1990s. I’ll also illuminate that connections through non-homogeneous and local communication networks between the MV Sewol and rescue forces are partly to blame for the failure of an effective rescue, because they could not share enough information during the emergency. In doing so, I’ll show that the most important causes of the failure of the construction of communication actor-network in the disaster were that the Jindo coastal VTS was not operated as an obligatory passage points, which mediated between the MV Sewol and their rescue forces, and the Korea Coast Guard did not shape the ‘center of calculation’ that properly commanded the rescue for the MV Sewol.

NMEA2000을 이용한 임베디드 선박 모니터링 시스템의 개발

이창의(Chang-Ui Lee),김달용(Dal-Yong Kim),유영호(Yung-Ho Yu),신옥근(Ok-Keun Shin) 한국마린엔지니어링학회 2009 한국마린엔지니어링학회지 Vol.33 No.5

위험물 부두 안전설비 강화에 관한 연구

윤귀호,이윤석,김종성,김대해 해양환경안전학회 2016 해양환경안전학회 학술발표대회 논문집 Vol.2016 No.04