Measurement errors and correction of the UAT-2 ultrasonic anemometer  

作　　者：CHENG Xue Ling PENG Zhen HU Fei ZENG Qing Cun LUO Wei Dong ZHAO Yi Jun HONG Zhong Xiang 

机构地区：[1]State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics,Chinese Academy of Sciences [2]Department of Atmospheric Science, Nanjing University

出　　处：《Science China(Technological Sciences)》2015年第4期677-686,共10页中国科学（技术科学英文版）

基　　金：The National Basic Research Program of China(Grant No.2010CB951804);The Strategy Guide for the Specific Task of the Chinese Academy of Sciences(Grant No.XDA10010403);The National Natural Science Foundation of China(Grant No.41375018);Special finance from the China Meteorological Administration(Grant No.GYHY200706034);The National Science and Technology Pillar Program(Grant No.2008BAC37B02)

摘　　要：Two kinds of measurement errors have been observed in the recently developed UAT-2 ultrasonic anemometer.One is the flow distortion produced by a"blocking effect",and the other is the angle of attack caused by the vertical misalignment of the instrument.Here,we study these errors and discuss the possible correction methods.Via a wind tunnel experiment and numerical simulation,a 3D calibration matrix was developed to correct the"blocking effect".In the field test,the angle of attack was detected by an inclinometer settled on the reference plane of the anemometer,and the instrumental misalignment or tilt was corrected by a coordinate transformation.The combined use of an inclinometer and the proposed correction method may help find a new approach for vertical velocity correction.

关 键 词：ultrasonic anemometer transducer array blocking effect attack angle INCLINOMETER 

分 类 号：TH765.4[机械工程—仪器科学与技术]