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Improvement in Wind Vector from UHF Wind Profiler Radar through Removing Ground Echo

지형에코 제거를 통한 UHF 윈드프로파일러의 바람벡터 개선

  • Kim, Kwang-Ho (Geo-Sciences Institute, Pukyong National University) ;
  • Kim, Park-Sa (Geo-Sciences Institute, Pukyong National University) ;
  • Kim, Min-Seong (Department of Environmental Atmospheric Sciences, Pukyong National University) ;
  • Kang, Dong-Hwan (Geo-Sciences Institute, Pukyong National University) ;
  • Kwon, Byung Hyuk (Department of Environmental Atmospheric Sciences, Pukyong National University)
  • 김광호 (부경대학교 지구과학연구소) ;
  • 김박사 (부경대학교 지구과학연구소) ;
  • 김민성 (부경대학교 환경대기과학과) ;
  • 강동환 (부경대학교 지구과학연구소) ;
  • 권병혁 (부경대학교 환경대기과학과)
  • Received : 2015.10.07
  • Accepted : 2016.01.07
  • Published : 2016.02.29

Abstract

Ground echo is radar return from stationary targets such as buildings and trees. Wind vectors from the wind profile radar in Gangneung are affected by ground echoes due to the complex mountainous terrain located to the west and the south. These ground echoes make a spurious peak close to the direct current (DC) line signal in Doppler spectra. Wind vectors polluted by ground clutters were determined from spectra of oblique beams. After eliminated the terrain echoes, the accuracy of wind vector compared with radiosonde was improved about 68.4% and its relative coefficient was increased from 0.58 to 0.97.

Keywords

Wind profiler radar;Doppler spectra;DC removal;Ground echo

Acknowledgement

Supported by : 기상청

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