Characterization of laser propagation through turbulent media by quantifiers based on the wavelet transform

The propagation of a laser beam through turbulent media is modeled as a fractional Brownian motion (fBm). Time series corresponding to the center position of the laser spot (coordinates x and y) after traveling across air in turbulent motion, with different strength, are analyzed by the wavelet theo...

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Detalles Bibliográficos
Autores principales: Zunino, L., Pérez, D.G., Garavaglia, M., Rosso, O.A.
Formato: JOUR
Materias:
Fractional Brownian Motion
Hurst Exponent
Laser Propagation
Signal Entropy
Time-Frequency Signal Analysis
Turbulence
Wavelet Analysis
Characterization
Entropy
Fractals
Time series analysis
Turbulent flow
Wavelet transforms
Fractional brownian motion
Hurst exponent
Laser propagation
Signal entropy
Time-frquency signal analysis
Wavelet analysis
Lasers
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_0218348X_v12_n2_p223_Zunino
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:The propagation of a laser beam through turbulent media is modeled as a fractional Brownian motion (fBm). Time series corresponding to the center position of the laser spot (coordinates x and y) after traveling across air in turbulent motion, with different strength, are analyzed by the wavelet theory. Two quantifiers are calculated, the Hurst exponent, H, and the mean Normalized Total Wavelet Entropy, S̃WT. It is verified that both quantifiers give complementary information about the turbulence.

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