Uncertainty estimates in DGV systems due to pixel location and velocity gradients

被引：11
|
作者：
Morrison, GL [1 ]
Gaharan, CA
机构：
[1] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA
[2] Lockheed Martin Skunk Works, Palmdale, CA USA
来源：
MEASUREMENT SCIENCE AND TECHNOLOGY | 2001年 / 12卷 / 04期
关键词：
fluid flow velocity; laser Doppler anemometer;
D O I：
10.1088/0957-0233/12/4/302
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The accuracy of Doppler global velocimeter systems is dependent upon many parameters. The ability to obtain accurate values of the light intensity at specified locations in space can easily be the largest contributor to uncertainty in the resultant velocity measurement. The effects of light intensity spatial gradients and the accuracy of spatial locations of the individual measurements are analysed to provide estimates of the magnitude of these uncertainties and to determine how these uncertainties can be reduced.
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页码：369 / 377
页数：9
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