한국전자통신학회논문지 (The Journal of the Korea institute of electronic communication sciences)

한국전자통신학회 (Korea Institute of Electronic Communication Science)
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레이더 상수를 이용한 UHF 윈드프로파일러 표준화

UHF Wind Profiler Calibration Using Radar Constant

  • 이경훈 (부경대학교 지구환경시스템과학부) ;
  • 권병혁 (부경대학교 환경대기과학과) ;
  • 윤홍주 (부경대학교 공간정보시스템공학과)
  • 투고 : 2020.08.15
  • 심사 : 2020.10.15
  • 발행 : 2020.10.31
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초록

기상청의 UHF 대역 윈드프로파일러 레이더는 바람의 연직 분포를 산출하는 장비로, 더 나은 성능을 위해 보정이 필요하다. 보정은 강수에 민감한 UHF 레이더의 특징을 이용하고, 레이더 사이트에서 우량계로 측정한 시간별 일련의 지상 강우 강도를 기준으로 한다. 장비 보정을 하지 않으면 청천에서도 바람 벡터에 오차가 발생할 수 있으므로, 레이더 상수 결정 방법에 따라 정기적으로 보정 작업이 수행되어야 한다. 레이더 산출 바람을 라디오존데로 관측한 바람과 비교하여, 최적의 레이더 상수가 바람의 정확도 향상에 이바지하는 것을 확인하였다.

The UHF band wind profiler radars of the Korea Meteorological Administration (KMA), which produces the vertical profile of the wind, need to be calibrated for better performance. The capabilities of the radar in detecting even light precipitation were used for the calibration of which reference takes the hourly series of ground rainfall rate measured by a rain gauge at the radar site. This calibration must be renewed regularly according to the methodology implemented in this work since errors occur on the wind vectors in the clear sky without reflectivity calibration. Comparing the wind by wind profiler with that by radiosonde, the optimal radar constant contributed to the improvement of wind accuracy.

키워드

참고문헌

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