Wavelet analysis of nonstationary speckle patterns

Pavel V. Zakharov; Dmitry A. Zimnyakov

doi:10.1117/12.469012

31 May 2002 Wavelet analysis of nonstationary speckle patterns

Proceedings Volume 4705, Saratov Fall Meeting 2001: Coherent Optics of Ordered and Random Media II; (2002) https://doi.org/10.1117/12.469012
Event: Saratov Fall Meeting 2001, 2001, Saratov, Russian Federation

Abstract

Wavelet analysis of scattered light intensity fluctuations was used to improve performance of speckle correlometry of porous systems. The further development of technique was proposed to study structural characteristics of such systems. The intensity fluctuations of multiple-scattered light is a non-stationary noise-like signal. Previously reported spectral analysis of such signals based on windowed Fourier transformation faces the well-known difficulties in a case of short time series. The effect of aliasing in frequency domain prevent us from determining spectral characteristics accurately. But by use of continuous wavelet analysis it can be defined with maximal time-frequency resolution.

Citation Download Citation

Pavel V. Zakharov and Dmitry A. Zimnyakov "Wavelet analysis of nonstationary speckle patterns", Proc. SPIE 4705, Saratov Fall Meeting 2001: Coherent Optics of Ordered and Random Media II, (31 May 2002); https://doi.org/10.1117/12.469012

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