Laser Doppler velocimeter using phase shift method for discrimination of the motion direction

Jiaqi Suo; Jian Zhou; Bin Zhang

doi:10.1117/12.2691566

24 November 2023 Laser Doppler velocimeter using phase shift method for discrimination of the motion direction

Jiaqi Suo, Jian Zhou, Bin Zhang

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 1293503 (2023) https://doi.org/10.1117/12.2691566
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

In order to discriminate the sense of velocity, this paper proposes a laser Doppler velocimetry system based on the phase shift method. First, the expression for the light intensity of the interference field is derived, and the relationship between the interference fringes in time is obtained. Then two signal reception channels are generated by means of optical methods with a phase difference of π/2 between them. Finally, the direction of velocity is identified according to the change in phase between the two signals caused by the change in the direction of movement of the object. The experimental results show that the direction of velocity can be effectively determined by using the phase discrimination method.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jiaqi Suo, Jian Zhou, and Bin Zhang "Laser Doppler velocimeter using phase shift method for discrimination of the motion direction", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 1293503 (24 November 2023); https://doi.org/10.1117/12.2691566

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
9 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Signal detection

Doppler effect

Laser Doppler velocimetry

Laser frequency

Beam path

Phase shifts

Beam splitters

Show All Keywords

Keywords/Phrases

Search In:

Publication Years