Quadrature demodulation technique used in laser Doppler velocimetry

Access Full Text

Quadrature demodulation technique used in laser Doppler velocimetry

For access to this article, please select a purchase option:

Buy article PDF
£12.50
(plus tax if applicable)
Add to cart
Buy Knowledge Pack
10 articles for £75.00
(plus taxes if applicable)
Add to cart

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Your details
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:
 
 
 
 
 
Electronics Letters — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

© IEE
Published

The authors present a technique for applying quadrature demodulation to determine the frequency of Doppler signals. This technique enables low-frequency signals with less than one signal period to be measured. The dependence of measurement error on signal-to-noise-ratio and measurement time is also investigated.

Inspec keywords: Doppler measurement; measurement errors; demodulation; laser velocimetry

Other keywords: low-frequency signal; measurement error; signal-to-noise ratio; laser Doppler velocimetry; measurement time; quadrature demodulation

Subjects: Measurement instrumentation and techniques for fluid dynamics; Level, flow and volume measurement; Velocity, acceleration and rotation measurement; Laser beam applications; Velocity, acceleration and rotation measurement; Modulation and coding methods; Laser applications

References

    1. 1)
      • J. Czarske . (1996) Verfahren zur Messung und Auswertung der Interferenzphase in der Laser-Doppler-Velocimetrie.
    2. 2)
      • J. Czarske . Method for analysis of the fundamental measuring uncertainty of laserDopplervelocimeters. Opt. Lett. , 522 - 524
    3. 3)
      • Müller, H., Többen, H., Strunck, V., Arndt, V., Dopheide, D.: `Quadrature demodulation in novelfrequency shift LDV systems as an alternative to fringe biasing', Proc. Conf. Laser Anemometry, 1995, Hilton Head, SC, USA, p. 455–458FED–Vol. 229, .
    4. 4)
      • Boashash, B., O'Shea, P., Arnold, M.: `Algorithms for instantaneous frequency estimation: acomparative study', Proc. Advanced signal processing algorithms, architectures andimplementations, SPIE, 1990, 1348, p. 126–148.
http://iet.metastore.ingenta.com/content/journals/10.1049/el_19980389
Loading

Related content

content/journals/10.1049/el_19980389
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading