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

Korea Institute of Electronic Communication Science (한국전자통신학회)
권호 표지
DOI QR코드

DOI QR Code

Rainfall Estimation by X-band Marine Radar

X밴드 선박용 레이더를 이용한 강우 추정

  • 김광호 (기상레이더센터) ;
  • 권병혁 (부경대학교 환경대기과학과) ;
  • 김민성 (부경대학교 지구과학연구소) ;
  • 김박사 (부경대학교 지구과학연구소) ;
  • 윤홍주 (부경대학교 공간정보시스템공학과)
  • Received : 2018.04.20
  • Accepted : 2018.08.15
  • Published : 2018.08.31
Download PDF
⟨ Previous Next ⟩

Abstract

The rainfall cases were identified by rainfall estimation techniques which were developed by using X - band marine radar. A digital signal converter was used to convert the signal received from the marine radar into digital reflectivity information. The ground clutter signal was removed and the errors caused by beam attenuation and beam volume changes were corrected. The reflectivity showed a linear relationship with the rain gauge rainfall. Quantitative rainfall was estimated by converting the radar signal into an cartesian coordinate system. When the rainfall was recorded more than $5mm\;hr^{-1}$ at three automatic weather stations, the rain cell distribution on the marine radar was consistent with that of the weather radar operated by Korea meteorological Adminstration.

X밴드 선박용 레이더를 이용하여 개발한 강우 추정 기술로 강우 사례를 검증하였다. 디지털 신호 변환기를 사용하여 선박용 레이더로부터 수신된 신호를 디지털 반사 정보로 변환하였다. 반사도 정보에서 지형클러터 신호를 제거하고, 빔 감쇠와 빔 부피의 변화에 의해 발생하는 오류를 보정 처리하였다. 처리된 반사 정보는 우량계 강우량과 선형적인 관계를 보였다. 레이더 신호를 직교좌표계로 변환하여 정량적 강우를 추정하였다. 자동기상관측소 세 지점에서 $5mm\;hr^{-1}$ 이상의 강우가 기록된 사례에서 선박용 레이더의 강우 분포는 기상청 운용 기상 레이더의 결과와 일치하였다.

Keywords

References

  1. S. Jung and G. Lee, "Statistical characteristics of atmospheric conditions related to radar beam propagation using radiosonde data in 2005-2006," J. of the Korean Earth Science Society, vol. 31, no. 6, 2010, pp. 584-599. https://doi.org/10.5467/JKESS.2010.31.6.584
  2. K. Kim, M. Kim, G. Lee, D. Kang, and B. Kwon, "The adjustment of radar precipitation estimation based on the kriging method," J. of the Korean Earth Science Society, vol. 34, no. 1, 2013, pp. 13-27. https://doi.org/10.5467/JKESS.2013.34.1.13
  3. R. Gill, S. Overgaard, and T. Bovith, "The Danish weather radar network," In Proc. European Radar Conf. 2006, Barcelona, Spain, Sept. 2006.
  4. M. Kim, B. Kwon, and H. Yoon, "Estimation of surface layer heat flux using the UHF sensor installed on UAV," J. of Korea Institute of Electronic Communication Sciences, vol. 13, no. 1, 2018, pp. 265-276. https://doi.org/10.13067/JKIECS.2018.13.1.265
  5. S. Thorndahl and M. Rasmussen, "Marine X-band weather radar data calibration," Atmospheric Research, vol. 103, 2012, pp. 33-44. https://doi.org/10.1016/j.atmosres.2011.04.023
  6. S. Lee, E. Im, and Y. Lee, "High power X-band SSPA Design using Gysel Power Combiner," J. of Korea Institute of Electronic Communication Sciences, vol. 9, no. 4, 2014, pp. 425-431. https://doi.org/10.13067/JKIECS.2014.9.4.425
  7. P. Kim, B. Kwon, M. Kim, and H. Yoon, "Converting Analog to Digital Signals on the X-band Radar," J. of Korea Institute of Electronic Communication Sciences, vol. 13, no. 3, 2018, pp. 497-502. https://doi.org/10.13067/JKIECS.2018.13.3.497
  8. L. Pedersen, "Identification and Quantification of Uncertainties Related to Using Distributed X-band Radar Estimated Precipitation as input in Urban Drainage Models," PhD Thesis, DHI & Institute for Informatics and Mathematical Modelling (IMM), Technical University Denmark (DTU), 2009.
  9. L. Pedersen, N. Jensen, and H. Madsen, "Calibration of Local Area Weather Radar-Identifying significant factors affecting the calibration," Atmospheric Research, vol. 97, no. 1-2, 2010, pp. 129-143. https://doi.org/10.1016/j.atmosres.2010.03.016
  10. J. Bech, B. Codina, J. Lorente, and D. Bebbington, "The sensitivity of single polarization weather radar beam blockage correction to variability in the vertical refractivity gradient," J. of Atmospheric and Oceanic Technology, vol. 20, no. 6, 2003, pp. 845-855. https://doi.org/10.1175/1520-0426(2003)020<0845:TSOSPW>2.0.CO;2
  11. D. McLaughlin and Coauthors, "Short-wavelength technology and the potential for distributed networks of small radar systems," Bulletin of American Meteorological Society, vol. 90, no. 12, 2009, pp. 1797-1817. https://doi.org/10.1175/2009BAMS2507.1