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|Other Titles:||THE PERFORMANCE TEST OF A FIVE BEAM PHASED ARRAY DOPPLER SODAR IN ISIE(INTERNATIONAL SODAR INTERCOMPARISON EXPERIMENTS)|
|Authors:||光田, 寧 |
|Author's alias:||MITSUTA, Yasushi|
|Journal title:||京都大学防災研究所年報. B = Disaster Prevention Research Institute Annuals. B|
|Abstract:||The present study group has developed a new wind profiling sodar with a phased arrayantenna. This system is superior to usual ones with parabola reflectors in its portability.The Doppler wind measurement based on five-beam system was used to get free from acousticrefraction effect and contamination of vertical component on the horizontal wind estimation.Measurement of wind speeds, wind directions and the vertical component of turbulence fromthe sodar are compared with similar measurements from in situ sensors on a 300 m instrument-ed tower. Results indicate that the sodar measured wind direction accurately and reasonablyhigh precision. The sodar tended to underestimate the wind speed under the high windcondition. The origin of it might be the acoustic reflection from ground objects. The valueof the vertical component of turbulence indicates the fairly good agreement between the sodarmeasurements and in situ sensor masurements especially under the convective conditions.|
|Appears in Collections:||No.32 B-1|
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