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- Title
Increasing the Frequency Resolution when Measuring Vibrations of Rotating Bodies with Fixed Beam Laser Vibrometry.
- Authors
Artelnyi, V. V.; Rodionov, A. A.; Stulenkov, A. V.
- Abstract
Laser Doppler vibrometry is actively used in experimental studies because of its noncontact measurement technique. When using a stationary laser to measure the vibrations of rotating bodies and Fourier transform to process the results of such measurements, a problem arises, associated with a decrease in the frequency resolution of the spectra with increasing rotation rate of the body. As a result, at sufficiently high rotation rates, closely spaced discrete components may cease to be resolved. This paper proposes a method for solving such a problem using the least squares method. The operability of this processing method has been demonstrated on experimental data.
- Subjects
ROTATIONAL motion (Rigid dynamics); LASER beams; LEAST squares; FREQUENCY spectra; MOLECULAR rotation
- Publication
Acoustical Physics, 2023, Vol 69, Issue 3, p367
- ISSN
1063-7710
- Publication type
Article
- DOI
10.1134/S1063771022700038