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KMID : 1024520160250020267
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Journal of the Environmental Sciences
2016 Volume.25 No. 2 p.267 ~ p.280
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Improvement in Wind Vector from UHF Wind Profiler Radar through Removing Ground Echo
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Kim Kwang-Ho
Kim Park-Sa
Kim Min-Seong
Kang Dong-Hwan
Kwon Byung-Hyuk
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Abstract
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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.
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KEYWORD
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Wind profiler radar, Doppler spectra, DC removal, Ground echo
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