Spectral Analysis for Sign Recovery in a Self-Mixing Vibrometer

被引：0
|
作者：
Norgia, Michele [1 ]
Magnani, Alessandro [1 ]
Pesatori, Alessandro [1 ]
机构：
[1] Politecn Milan, Dipartimento Elettron Informaz & Bioingn, I-20133 Milan, Italy
来源：
11TH INTERNATIONAL CONFERENCE ON VIBRATION MEASUREMENTS BY LASER AND NONCONTACT TECHNIQUES - AIVELA 2014: ADVANCES AND APPLICATIONS | 2014年 / 1600卷
关键词：
Interferometers; Optical sensors; Frequency measurement; Optoelectronic devices; Velocity measurement; ABSOLUTE DISTANCE MEASUREMENT; LASER-DIODE; INTERFEROMETRIC MEASUREMENTS; DISPLACEMENT;
D O I：
10.1063/1.4879591
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
This work is about the realization of an interferometer able to measure speed, with sign, using only one optical channel without the addition of frequency modulation. The proposed approach is realized through a self-mixing technique. This work proposes a method for defining the direction of the target movement, looking at the distortion of the power modulation, but in the frequency domain, with all the advantages of this kind of elaboration in terms of strength against noise and signal fading.
引用
收藏
页码：259 / 262
页数：4
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