heterodyne measurement

heterodyne measurement

[′hed·ə·rə‚dīn ′mezh·ər·mənt]
(electronics)
A measurement carried out by a type of harmonic analyzer which employs a highly selective filter, at a frequency well above the highest frequency to be measured, and a heterodyning oscillator.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Interfering the laser pump light and returned SBS light can provide a heterodyne measurement of the frequency shift, which makes it possible to compare images, monitoring different mechanical properties.
Statistical methods will be developed to evaluate the overall uncertainty of the estimated power and phase spectrum of the oscilloscope and photodiode impulse response functions, and time domain measurements will be compared to heterodyne measurements.