%0 Journal Article
%T Analysis on Effect of Beam Quality on Measurements of Scintillation Intensity and Flow Velocity<br>光束质量对闪烁和流速测量的影响分析
%A ZENG Zong-yong
%A LIU He-lai
%A JIANG Yu
%A LIU Wen-qing
%A LIU Jian-guo
%A <br>曾宗泳
%A 刘和来
%A 江宇
%A 刘文清
%A 刘建国
%J 光子学报
%D 2007
%I 
%X The expression of ideal far field feature of LED (Light Emission Diode) source for the measurements of scintillation intensity and flow velocity was derived.Wave front destortion of LED source can be divided into incline and curvature variance of wave front.The incline of wave front is equivalent with the receivers at abaxial location,and the measurement errors of scintillation intensity and flow velocity can be ignored.But the measurement errors of scintillation intensity and flow velocity can not be ignored when the curvature radius of wave front influenced by beam twisted does not equal to the distance to the light source.At the same time,the symmetry of path weighting function would be changed.The experiment was taken and the measurement results agree with the theoretical calculation well.
%K Optical scintillation
%K Velocity measurement
%K Theoretical analyses
%K Measurement precision<br>光闪烁
%K 流速测量
%K 理论分析
%K 测量准确度
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=9F6139E34DAA109F9C104697BF49FC39&aid=E7658AFBBC7378177C0DD955C433EC69&yid=A732AF04DDA03BB3&vid=933658645952ED9F&iid=F3090AE9B60B7ED1&sid=B9F3FA78581E475F&eid=3A61856D91CF5877&journal_id=1004-4213&journal_name=光子学报&referenced_num=0&reference_num=8