Ms. Qiao Xie Profile

Qiao Xie

at Central South University

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 10 May 2023 Paper

Rotational speed measurement under misalignment conditions based on rotational Doppler effect

Qiao Xie, Tao Yu, Zhiguo Tan, Wenke Xie, Guangwei Qin

Proceedings Volume 12554, 125540J (2023) https://doi.org/10.1117/12.2652842

KEYWORDS: Doppler effect, Target detection, Remote sensing, Light scattering, Light sources, Optical simulations, Bessel functions, Velocity measurements, Superposition, Reflection

Read Abstract +

The rotational Doppler effect (RDE) occurs when a vortex beam carrying orbital angular momentum (OAM) is normally incident on the center of a rotating target, which is widely applied for the angular velocity measurement of the rotating target and OAM detection. The combined vortex beam based on coherent beam combining technology has many unique advantages, such as high power and excellent quality. In this paper, the combined vortex beam is used as the detection source to measure the rotating target at a distance of 1 kilometer, we prove the feasibility of the combined vortex beam can be used to measure the rotational speed. However, there are some misaligned incidence conditions such as lateral displacement and oblique angle between the optical axis and the rotation axis. We analyze the change of the OAM spectrum and characteristic peak’s intensity with the increase of misalignment. The results show the OAM mode of the probing beam will expand to the adjacent modes, resulting in a series of discrete frequency-shifted signals including the characteristic peaks, when the optical axis does not coincide with the rotation axis. When deviation exceeds a certain value, the dispersion is too large to cause the frequency characteristic peaks are gradually submerged in the scattering signals. These analyses provide a reference for the practical detection of rotational speed in remote sensing.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

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:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years