Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Airspeed Calibration Services: Laser Doppler Anemometer Calibration and Its Uncertainty



Iosif I. Shinder, Michael R. Moldover, J. M. Hall, Mike Duncan, Joe Keck


The National Institute of Standards and Technology (NIST) and the Oak Ridge National Laboratory (ORNL) are improving their airspeed calibration services. Both laboratories use spinning disks to generate linear velocities that are traceable to NIST’s length and time standards. We compared their spinning disks using NIST’s laser Doppler anemometer (LDA) as a transfer standard. At 10 m/s, the disks differed by (0.11 ± 0.26) %, where the uncertainty is two standard deviations. We discuss the techniques used to calibrate LDAs with spinning disks and their uncertainties.
Proceedings Title
8th International Symposium on Fluid Flow Measurement
Conference Dates
June 18-22, 2012
Conference Location
Colorado Springs, CO


laser doppler calibration, spinning disk calibration, primary standard
Created June 20, 2012, Updated February 19, 2017