Impact of vibration on performance of Doppler velocimeter

Ivan Popov

doi:10.1117/12.693083

21 June 2006 Impact of vibration on performance of Doppler velocimeter

Ivan Popov

Proceedings Volume 6345, Seventh International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; 63451H (2006) https://doi.org/10.1117/12.693083
Event: Seventh International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 2006, Ancona, Italy

Abstract

The changes in the spectrum of photocurrent in two-beam Doppler velocimeter caused by different types of vibration are analyzed. It is shown that, under certain conditions, periodical laser beam scan and surface vibration are producing identical changes in the spectrum of photocurrent. The changes might be quite considerable even with relatively small amplitude of laser beam scan of several arc seconds while monitoring slowly moving surface. The vibrational structure of Doppler and "pedestal" component in photocurrent are studied; it is shown that with vibrational velocity exceeding half of translational velocity the vibrational bands correspondent to "pedestal" and Doppler component are overlapping. The use of short acquisition time, which allows avoiding formation of broadband line structure in the spectrum, is also studied. The impact of bending vibration of translationally moving surface is also considered; due to averaging action of detector receiving aperture the impact of bending vibration is much less pronounced than that of laser beam scan or surface vibration.

Citation Download Citation

Ivan Popov "Impact of vibration on performance of Doppler velocimeter", Proc. SPIE 6345, Seventh International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 63451H (21 June 2006); https://doi.org/10.1117/12.693083

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available