Title :
Spectral Analysis for Velocity Measurement Through Self-Mixing Interferometry
Author :
Magnani, A. ; Norgia, Michele
Author_Institution :
Dipt. di Elettron., Inf. e Bioingegneria, Politec. di Milano, Milan, Italy
Abstract :
A novel elaboration technique for a self-mixing interferometer is presented. It enables the measurement of speed and direction for a remote target, without using heterodyne detection. The elaboration employs the signal non-linearity for recovering the speed sign directly in the frequency domain. The target speed is measured by the signal frequency, whereas the speed sign is evaluated by the phases of the signal.
Keywords :
frequency-domain analysis; velocity measurement; elaboration technique; frequency domain; heterodyne detection; remote target; self-mixing interferometry; signal frequency; signal phases; spectral analysis; speed measurement; target speed; velocity measurement; Adaptive optics; Frequency measurement; Harmonic analysis; Measurement by laser beam; Optical interferometry; Optical variables measurement; Phase measurement; Velocity measurement; frequency measurement; optical interferometry; optical sensors; optoelectronic devices;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2013.2273562
