LDA SYSTEM WITH BOTH TRACKING AND COUNTING

Authors
LI EB WANG SK
Citation
Eb. Li et Sk. Wang, LDA SYSTEM WITH BOTH TRACKING AND COUNTING, FLOW MEASUREMENT AND INSTRUMENTATION, 5(1), 1994, pp. 59-60
Citations number
NO
Categorie Soggetti
Instument & Instrumentation","Engineering, Mechanical
Journal title
FLOW MEASUREMENT AND INSTRUMENTATION → ACNP
ISSN journal
09555986
Volume
5
Issue
1
Year of publication
1994
Pages
59 - 60
Database
ISI
SICI code
0955-5986(1994)5:1<59:LSWBTA>2.0.ZU;2-A
Abstract
A laser Doppler anemometer (LDA) which uses both frequency tracking an d Doppler burst counting techniques is developed and applied to measur ements of a turbulent oscillating flow within a duct. It is shown that by introducing controlled frequency shifts in the counter-based LDA s ystem, large fluctuations in flows can be tracked. The limitations of tracker- or counter-based LDA systems can thus be overcome and the per formance is improved.