• 한국정보통신학회논문지
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• 제13권2호
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• pp.330-340
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• 2009

함정은 해상 운용 시 파도 및 바람의 영향으로 인하여 Pitch Roll 방향으로 운동이 불가피하다. 따라서 함정은 전 후 좌우로 연속적으로 회전 운동을 한다. 그리고 함정은 내부 장비들의 가진에 의한 다양한 주파수의 진동과 강한 파도, 폭발에 의한 충격 등의 외란 신호에 항상 노출되어 있다. 본 논문에서는 실제 시스템과 유사한 전산해석 모델을 작성한 후 외란 신호를 포함한 함정의 연속적인 거동에 대하여 2축 안정화 장치 의 동적 거동 및 위치 제어 전산해석을 수행한다.

• 대한조선학회논문집
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• 제52권4호
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• pp.298-304
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• 2015

Shipboard equipment in naval ships should be designed to be safe under the shock load. Very high stress due to the shock load can be effectively reduced by the resilient mounts considering the mount capacity and dynamic characteristics. An optimum arrangement of resilient mount installed to absorb the shock energy is addressed to assess the safety of ship structure and shipboard equipment subjected to the shock load. Structural responses are analyzed for both frame structure supporting the shipboard equipment subject to the shock load with and without the resilient mounts. The shock absorbability of the resilient mount is evaluated by the results of structural response analysis; meanwhile, several types of shock analyses considering the arrangement of resilient mounts are carried out and the shock responses are compared to verify the effect of the arrangement. Thereafter, optimum arrangements are obtained by means of Genetic algorithm (GA) considering the different capacities of resilient mount. Stress, deformation and dynamic feature at the frame structure supporting the shipboard equipment under the shock load are also discussed in order to meet the capacity of resilient mount.

• 한국정보통신학회논문지
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• 제17권1호
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• pp.101-109
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• 2013

e-Navigation 환경에서는 선박에서 발생하는 다양한 정보를 통합 관리할 수 있는 시스템이 요구되고 있다. 이러한 시스템에 적용할 수 있는 표준으로 IEC 61162-450이 있다. 본 논문에서는 IEC 61162-450 표준을 기반으로 선행 연구된 여러 요소기술을 적용하여 선박 통합 정보시스템의 아키텍처를 설계하고 구현하였다. 이러한 요소기술에는 NMEA 2000 게이트웨이, 무선 센서 게이트웨이, 데이터베이스, 모니터링 어플리케이션 등이 있다. 또한 본 논문에서는 시험 및 검증을 통하여 구현한 시스템의 유용성을 확인하였다.

• 한국항해학회지
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• 제25권4호
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• pp.361-369
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• 2001

This thesis describes the design of a stabilized algorithm for shipboard satellite antenna systems which can enhance the tracking performance. In order to overcome some drawbacks of the conventional step tracking algorithm, the proposed algorithm searches for the best tracking angles using gradient-based formulae and signal intensities measured according to a search pattern. The effectiveness of the proposed algorithm is demonstrated through simulation using real-world data.

• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 2001년도 춘계 학술대회 논문집
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• pp.135-140
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• 2001

In the last years there have been some severe accidents with passenger vessels. So, International Maritime Organization(IMO) has recognized that computer stimulation of the evacuation may be required for passenger vessels. Human elements is a key issues of escape analysis on shipboard. There are technical requirements to simulate of escape analysis for human elements. Technical requirements include model of ship structure, evacuation algorithm, human behaviour analysis and influence of ship listing/motion. This paper provides the key issues and technologies of simulation for human escape on shipboard.

• 한국마린엔지니어링학회:학술대회논문집
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• 한국마린엔지니어링학회 2001년도 춘계학술대회 논문집
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• pp.219-224
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• 2001

This paper presents the development of a tracking algorithm for shipboard satellite antenna systems which can enhance the tracking performance. In order to overcome some drawbacks of the conventional step tracking algorithm, the proposed algorithm searches for the best tracking angles using gradient-based formulae and signal intensities measured according to a search pattern. The effectiveness of the proposed algorithm is demonstrated through simulation using real-world data.

• 한국항해학회지
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• 제15권4호
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• pp.79-99
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• 1991

The purpose of this study was to explore the nature and progressional change in consciousness of KMU students about the shipboard-life which appeared through regimental dormitory life. An empirical study was carried out to examine the perceptual differences not only on seafaring as a job but also on preliminary shipboard-life among each grades. The data analyzing perceptual differences on seafaring and preli inary shipboard-life of KMU students were collected from 450 students selected from 3 different kinds of populations -(1) senior students, (2) sophomore students, (3) freshmen-by the use of questionnaire method. The pearson's test for goodness of fit and factor analysis were used to analyze the data.

• 한국정보통신학회논문지
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• 제18권1호
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• pp.233-237
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• 2014

레이더 기술의 발전 추세 및 나날이 증가하는 대공 위협에 대한 대응시간의 단축을 위해 함정에 3차원 탐색레이더의 탑재가 선호되고 있다. 본 논문에서는 3차원 탐색레이더가 2차원 탐색레이더 대비 대응시간이 얼마나 단축되는지 실험을 통해 확인하였고 함정의 임무, 성능, 주변국 위협 현황, 경제적 여건 등 최적의 레이더 선택을 위한 고려 요소에 대해 제안하였다.

• 한국항해학회지
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• 제22권1호
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• pp.91-106
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• 1998

Traditionally, in the education for the trainees of marine officier, the emphasis is laid on the practical training on board to prepare them for the future position on board and to fit them for the shipboard life. Though the education has been carried out in various ways according to each country's social tradition, culture and educational system, in these days it is done normally by the combined way of school education and training on board to get the competence for the marine officer. Thus the shipboard training course is compulsively required to the candidates for certification as merchant marine officers by the IMO STCW convention 1978 and also it is believed that the education for the dacet officers is to be completed through the shipboard training. In spite of the various earlier studies to improve the training education system, there are few studies for the matters and problems form the standing point of cadet.

• International Journal of Internet, Broadcasting and Communication
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• 제8권4호
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• pp.1-10
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• 2016

This paper considers WiMedia UWB network based wireless ship area network (WSAN) so as to support high-quality multimedia video data services and important shipboard control data. In this paper, prioritized contention access (PCA) and distributed reservation protocol (DRP) based on WiMedia UWB (ECMA-368) MAC protocols are combined and proposed to support mixed high-quality video traffic and shipboard control data traffic applying varying DRP and PCA data periods according to channel condition and link parameter ptimization. It is shown that the proposed dynmaic channel allocation of WiMedia UWB MAC protocol can provide reliable mixed video and shipboard control data traffic as well.