• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2011.06a
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• pp.98-100
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• 2011

울산항은 입출항 선박의 항행안전을 위해 1996년 9월부터 해상교통관제실(VTS)을 설치운영하고 있으나 많은 물동량으로 빈번한 선박통항과 액화가스, 케미컬 등의 위험화물운송선박의 통항 등의 여러 가지 위험요소가 상존하고 있는 개항장이다. 특히 현대 미포조선소와 인근에 산재해 있는 중소 조선소 등에서 발생되고 있는 선박 조립용 블록을 운송하는 예 부선들의 빈번한 운항은 울산항의 안전한 물류유통에 많은 어려움을 야기하고 있는 실정이다. 한편 울산항 해상교통관제실에서는 레이더사이트의 운항선박에 대한 데이터, PORT-MIS의 선박관련 데이터 및 최근 선박자동식별장치(AIS)의 데이터 등 많은 정보들에 의해 운항 선박들의 항행 안전을 도모하고 있다. 따라서 본 연구에서는 선박 조립용 블록을 주로 운송하는 울산항의 (주)보성해상개발에서 TRS를 이용한 자체 운항관리실을 운용하여 운송효율과 안전운항을 노력하고 있는 상황과 그 결과 울산항 해상교통관제에 미치는 효과에 대해 분석하여 그 효율성을 나타내었다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2004.04a
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• pp.299-303
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• 2004

In this paper, it is presented a level sensor for measuring a level of the contents of cargo tank using frequency modulated continuous wave(FMCW). The frequency range is 10∼11 GHz, the radar cross section(RCS) of target is 0.8 ㎡ of metal plate. the experiment is performed in laboratory and open ground, the sweep time of the signal is 100 ms, the pyramidal horn antenna of about 20 dBi gain is used, and input power of antenna is about 5 dBm. the beat frequency according to the target moving to 40 m is measured. There is a good agreement between measured and calculated results. But the resolution of the FMCW radar is measured about 10 cm due to nonlinear of voltage controlled oscillator(VCO).

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2000.05a
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• pp.59-64
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• 2000

Active radar reflector may be less familiar, since their uses have been limited to military applications, especially the enhancement of the effective radar cross-sections of missile test range in the drone aircraft and missiles. Perhaps the most widely-blown applications of radar transponders are Identification Friend or Foe(IFF) and its civilian counterpart, secondary surveilliance radar for Air Traffic Control(ATC), and most recently, as Search And Rescue Transponder(SART) in the Global Maritime Distress and Safety System(GMDSS). Since it happens frequently accidents on the sea, the problems of the contamination more seriously considered. The conventional navigation buoy and utilities are not sufficient to maintain the safety of the sea and thus new structured concept must be considered. Therefore, this paper propose and implement the active radar reflector with a enhanced structure. The results are shown that the performance of the system is significantly improved comparing with the conventional utilities.

• Journal of Korea Society of Industrial Information Systems
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• v.5 no.3
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• pp.38-43
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• 2000

Active radar reflector may be less familiar, since their uses have been limited to military applications, especially the enhancement of the effective radar cross-sections of missile test range in the drone aircraft and missiles. Perhaps the most widely-Down applications of radar transponders are Identification Friend or Foe(IFF) and its civilian counterpart secondary surveilliance radar for Air Traffic Control(ATC), and most recently, as Search And Rescue Transponder(SART) in the Global Maritime Distress and Safety System(GMDSS). Since it happens frequently accidents on the sea, the problems of the contamination more seriously considered. The conventional navigation buoy and utilities are not sufficient to maintain the safety of the sea and thus new structured concept must be considered. Therefore, this paper propose and implement the active radar reflector with a enhanced function. The results are shown that the performance of the system is significantly improved comparing with the conventional utilities.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2006.06b
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• pp.241-246
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• 2006

This paper describes two kinds of personal hand-held electronic devices to support marine leisure safety. The one is Radar response-type safety device triggering by the pulse signal from a commercial 9GHz-band Radar to provide quick search and rescue with combined civilian-government-military fleets. The other one is M-RFID (Marine Radio Frequency IDentification) based safety electronic device using 900MHz Tx/Rx with spread spectrum frequency hopping and GPS. Through the field tests at sea using Korea Coast Guard's warship the operating performances are verified. Further plan for practical use of each device was also discussed.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2016.05a
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• pp.202-203
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• 2016

선박 조우 시 레이더, ARPA, AIS, ECDIS 등 기존 항법장치는 정량적으로 충돌의 위험을 판단할 수 있도록 도와주고, 최선의 피항동작을 취할 수 있도록 도와주었다. 이러한 장비들은 대부분 DCPA와 TCPA를 반영한 것이다. 하지만, 피항을 위한 마지막 결정을 내리는 것은 사람인 해기사이기 때문에 충돌사고는 지속적으로 발생하고 있고, 이 때문에 해기사에 대한 연구가 진행되고 있다. 최근에는 선박조우 시 해기사의 심리상태를 스트레스나 생체 반응을 통해 측정하고자 하는 연구가 진행되고 있다. 해기사의 심리상태를 반영한 항법장치가 있다면 기존 항법장치의 단점을 보완하고 새로운 해양사고 예방 개념이 도출할 수 있을 것이다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• v.2
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• pp.9-11
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• 2006

우리나라에는 매년 평균 $2{\sim}3$회의 태풍이 내습하고 있다. 이러한 태풍의 내습시 우리나라 남해 근방의 항만에 정박증인 선박과 항행중인 선박의 대부분을 진해만으로 피항을 하고 있는 실정이다. 이러한 진해만 피항시 정박하고 있는 많은 선박들 사이로 정박지를 찾아 헤메는 선박들로 인하여 위험한 상황을 초래하고 있다. 이러한 정박지 선정을 레이더를 통하여 진해만 정박지를 사전에 결정할 수 있으면 좋으리라 판단된다. 이 연구는 현재 정박지에서 선박간의 최소거리를 진해만 태풍 내습시의 자료를 이용하여 모델화하고 이 모델을 통하여 선박간의 최소 정박지 거리제공으로 선박항자에게 신속하고 정확한 정박지 선정에 도움이 되고자 한다. 또한 VTS center에서 정박지를 사전에 지정하는데 도움이 되는 시스템을 구축하는 기초자료로 이용하고자 한다.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.38 no.3
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• pp.249-255
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• 2002

This paper describes on the extraction of ship's real-time movement information using a combination full-function ARPA radar and ECS system that displays radar images and an electronic chart together on a single PC screen. The radar target extractor(RTX) board, developed by Marine Electronics Corporation of Korea, receives radar video, trigger, antenna bearing pulse and heading pulse signals from a radar unit and processes these signals to extract target information. The target data extracted from each pulse repetition interval in DSPs of RTX that installed in 16 bit ISA slot of a IBM PC compatible computer is formatted into a series of radar target messages. These messages are then transmitted to the host PC and displayed on a single screen. The position data of target in range and azimuth direction are stored and used for determining the center of the distributed target by arithmetic averaging after the detection of the target end. In this system, the electronic chart or radar screens can be displayed separately or simulaneously and in radar mode all information of radar targets can be recorded and replayed In spite of a PC based radar system, all essential information required for safe and efficient navigation of ship can be provided.

• Journal of Navigation and Port Research
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• v.28 no.6
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• pp.497-501
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• 2004

In this paper, it is presented a level sensor for measuring a level of the contents of cargo tank using frequency modulated continuous wave(FMCW). The frequency range is 10∼11 GHz, the radar cross section(RCS) of test target is $0.8\textrm{m}^2$ of metal plate. The experiment is performed in laboratory and open ground, the sweep time of the signal is 100 ms, the pyramidal horn antenna of about 22 dBi gain is used, and input power of antenna is about 8 dBm The beat frequency according to the target moving to 40 m is measured. There is a good agreement between measured and calculated results. But the resolution of the FMCW radar is measured about 10 cm due to nonlinear of voltage controlled oscillator(VCO).

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• v.29 no.1
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• pp.153-161
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• 2005

Recently, The government of Korea declared to develop RFID(Radio Frequency IDentification) as one of key strategic technology to perform U-Government using Ubiquitous technology. But, most of the related technologies for RFID are mainly focused on the inlaned application excepting marine applications. The last target of this study is to implement new Marine RFID(M-RFID) that can cover all of EEZ areas as large five times as inland volume. In this paper, as a basic study for the M-RFID, we carried out an establishing the concept design of M-RFID, developing the construction method of M-RFID and, extending the idea of M-RFID. As studying results, it is known that the M-RFID can be use in many practical areas such as the protection of EEZ area and aqua culture, the safety of fisher man, the disaster control for inlander and, fisheries ligistics with real-time.