Journal of Navigation and Port Research (한국항해항만학회지)

Korean Institute of Navigation and Port Research (한국항해항만학회)
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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 (Department of Naval Architecture and Ocean Engineering, Tongmyong University)
  • 양영준 (동명대학교 조선해양공학과)
  • Received : 2022.03.30
  • Accepted : 2022.10.25
  • Published : 2022.12.31
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Abstract

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.

본 논문은 X-밴드 항해용(선박용) 레이더를 이용한 파랑 계측시, 강설 및 강수에 의한 레이더 신호 변화 및 파랑 계측 저해 요소를 분석한다. 사용된 자료는 속초해수욕장 행정지원센터에 설치된 레이더를 활용하였으며, 비교 검증에 필요한 기상자료는 기상청과 국립해양조사원의 공공자료를 사용하였다. 기상청 공공자료는 레이더로부터 약 7km 떨어진 속초기상대에서 측정한 자료이며, 국립해양조사원 공공자료는 레이더로부터 약 3km 떨어진 해양관측부이에서 계측된다. 지금까지 강우나 강설에 의한 레이더 신호 변화는 경험적으로 전해졌을 뿐, 실제 기상데이터와 비교하여 분석한 사례는 전무하다. 이에 본 논문에서는 기상청의 강수, 강설 자료, CCTV, 레이더 신호를 시계열에서 종합적으로 분석하였다. 그 결과 강설 및 강우에 따라 레이더에서 계측된 파고의 경우 실제 파고 대비 감소되는 것을 확인하였으며, 거리에 따른 레이더 신호강도의 감소 현상도 확인되었다. 본 논문은 강설 및 강우에 따라 레이더의 신호강도 감소 현상을 다각적으로 분석한 것에 그 의의가 있다.

Keywords

Acknowledgement

본 연구는 중소벤처기업부의 기술혁신개발사업의 일환으로 수행하였음(S2950374, 원격계측기술 기반 해수욕장 안전관리 통합 솔루션 개발). 또한 해양경찰청 재원으로 해양수산과학기술진흥원의 지원을 받아 수행된 연구임(클라우드 기반 차세대 VTS 통합 플랫폼 개발). 끝으로 연구를 수행할 수 있도록 지원해주신 강원도 속초시청 관계자분께 감사 말씀드립니다.

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