• Title/Summary/Keyword: 항해용 레이더

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항해용 레이더 펄스변화와 파랑계측의 연관성

  • Yang, Yeong-Jun;Park, Dong-U;Gwon, Su-Yeon;Lee, Gyeong-Hun;Lee, Yeong-U
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2018.05a
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    • pp.175-177
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    • 2018
  • 항해용 X-band 레이더는 물표탐지를 통한 안전한 항해를 목적으로 널리 사용되고 있다. 해당 목적을 위해서는 노이즈로 간주되는 해면반사파(sea clutter)신호는 제거하여 사용하지만, 본 연구에서는 노이즈로 간주되는 해면반사파 신호를 활용하여 파랑에 대한 정보(파고, 파주기, 파향 등)를 파악하는데 활용하였다. 레이더에서 방출되는 전자기파는 펄스의 길이에 의해 탐지할 수 있는 영역이 제한되어 있다. 펄스의 길이가 짧을수록 짧은 주기의 파랑을 계측할 수 있다는 장점이 있지만, 거리의 제약으로 인하여 대형선박의 실 운항시에는 활용하기 어려운 현실적인 딜레마가 있다. 본 연구에서는 삼성중공업, 오션알앤디가 개발한 WaveFinder 시스템을 이용하여 기존 short pulse 모드 뿐만아니라 midium pulse 에서의 활용 가능성을 실제 시운전을 통해 확인하였다.

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해상 및 상공의 3차원 감시를 위한 해상 레이더의 스테레오 기능 구현에 관한 연구

  • Choe, Beom-Gyu;Song, Jae-Uk
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2011.11a
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    • pp.80-82
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    • 2011
  • 한정된 영공의 감시 및 해상의 효율적인 관리를 위하여 범용화되어 있는 선박용 레이더의 조합을 이용한 연안의 선박 및 항공기를 감시하는 시스템 개발을 위한 것이다. 범용 레이더의 조합을 통해 기존 대공 감시용 레이더에 비해 시스템의 소형화 제작 및 경제적 비용 절감이 가능하고, 범용 장비의 적용에 따른 용이한 유지보수 및 검증된 상용 장비의 운용을 통한 신뢰성을 확보함은 물론, 레이더 신호처리 기술의 도입으로 관련 주요 기반기술을 국산화 시키는 것을 목적으로 한다.

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A Comparative Study of Wave Height around Ulleungdo using the Radar (레이더식 파랑계를 이용한 울릉도 주변해역 파고 비교분석)

  • Kim, Chang-Su;Kim, Hyun-Soo;Park, Dong-Woo;Yang, Young-Jun
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2019.05a
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    • pp.119-120
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    • 2019
  • In order to verify the accuracy of wave measurement of the wave instrumentation system using X-band navigation radar, The validity of the results was obtained by analyzing the significant wave height around Ulleungdo. Especially, The correlations between the radar, wave height buoy and marine buoy for wave measurements were analyzed in season.

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해양교통안전 확보를 위한 무지향성 전파발신기 개발

  • Kim, Jeong-Wan;Jin, Seong-Hyeon;Yang, Gyeong-Seong;Kim, Jong-Uk
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2018.11a
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    • pp.114-116
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    • 2018
  • 선박용 레이더 주파수 대역에서 운영되고 어떤 레이더 물표의 탐지와 식별을 향상시키기 위한 송수신 겸용 장치(일종의 마이크로파 송수신기)로 해상의 선박에서 발사된 레이더 펄스를 수신한 후, 이 신호를 분석하여 분석된 신호에 대응되는 인식신호를 수신된 신호와 동일한 주파수의 전파에 변조시켜 응답하는 장치를 국산화 개발하였다.

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A Study on the Dynamic Response Analysis of the Fishery Barge Type Offshore Structure for Fitting Radar Reflector (레이더 리프렉터 장착을 위한 어업용 바지선의 동적 응답해석에 관한 연구)

  • Park Sung-Hyeon;Jeong Jung-Sik
    • Journal of Navigation and Port Research
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    • v.29 no.5 s.101
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    • pp.383-388
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    • 2005
  • To install a radar reflector on small ships, such as a small fishing vessel, a fishery buoy, and a barge ship for fishery, it is very important to develop the optimal system which may determine a proper installation location. For this, the response characteristics how waves have an effect on the small ships should be accurately analyzed. In this paper, we analyze the dynamic behaviors of small ships, which may be caused by irregular waves. To do this, we investigate how a barge ship responses to wavelength, water depth, and directions of incoming waves. The analyzed results shall be utilized to evaluate an effect on a radar cross section when we install an radar reflector on a barge ship for fishery and a small ship.

A Study on the Relationship between Meteorological Condition and Wave Measurement using X-band Radar (X-밴드 레이더 파랑 계측과 기상 상태 연관성 고찰)

  • Youngjun, Yang
    • Journal of Navigation and Port Research
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    • v.46 no.6
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    • pp.517-524
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    • 2022
  • This paper analyzes wave measurement using X-band navigation (ship) radar, changes in radar signal due to snowfall and precipitation, and factors that obstruct wave measurement. Data obtained from the radar installed at Sokcho Beach were used, and data from the Korea Meteorological Administration and the Korea Hydrographic and Oceanographic Agency were used for the meteorological data needed for comparative verification. Data from the Korea Meteorological Administration are measured at Sokcho Meteorological Observatory, which is about 7km away from the radar, and data from the Korea Hydrographic and Oceanographic Agency are measured at a buoy about 3km away from the radar. To this point, changes in radar signals due to rainfall or snowfall have been transmitted empirically, and there is no case of an analysis comparing the results to actual weather data. Therefore, in this paper, precipitation, snowfall data, CCTV, and radar signals from the Korea Meteorological Administration were comprehensively analyzed in time series. As a result, it was confirmed that the wave height measured by the radar according to snowfall and rainfall was reduced compared to the actual wave height, and a decrease in the radar signal strength according to the distance was also confirmed. This paper is meaningful in that it comprehensively analyzes the decrease in the signal strength of radar according to snowfall and rainfall.

Analysis of Surface Current Measurement Based on X-band Radar Image (X-밴드 레이더 이미지 기반 표층해류 계측 분석)

  • Na-Yun Kang;Yu-Kyung Lee;Young-Jun Yang
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2022.11a
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    • pp.323-324
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    • 2022
  • This paper explains the comparison results of surface current measurement using X-band Radar image through analysis. Measurements were carried out from February 2022 using the X-band Radar for marin ships installed at Sokcho Beach. Based on the Korea Hydrographic and Oceanographic Agency ocean observation buoys, the accuracy of surface current(current speed) measurement was verified through comparison and analysis of measurement data.

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Introduction of Surface Current Measurement Based on X-band Radar (X-밴드 레이더 기반 표층해류 계측 기법 소개)

  • Na-Yun Kang;Jose Carlos Nieto-Borge;Young-Jun Yang
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2022.06a
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    • pp.424-425
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    • 2022
  • This paper introduces X-band radar-based surface current measurement technique. A marine X-band radar used for navigation was installed at Sokcho Beach to collect surface current data in real time. Based on this, in order to verify the accuracy of the measurement of surface current (Current speed), the Korea Hydrographic and Oceanographic Agency Marine observation buoy compared it with the data. Data collected from January 2022 were compared and as a result the possibility of surface current(Current speed) measurement using radar confirmed.

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