False spectra formation in the differential two-channel scheme of the laser Doppler flowmeter.

Denis LapitanDmitry RogatkinSaydulla PersheyevKonstantin E Kotliar

Published in: Biomedizinische Technik. Biomedical engineering (2018)

Noise in the differential two-channel scheme of a classic laser Doppler flowmetry (LDF) instrument was studied. Formation of false spectral components in the output signal due to beating of electrical signals in the differential amplifier was found out. The improved block-diagram of the flowmeter was developed allowing to reduce the noise.

Keyphrases

air pollution
blood flow
optical coherence tomography
high speed
magnetic resonance imaging
magnetic resonance
density functional theory
computed tomography
mass spectrometry
visible light
dual energy
solid state