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

Luciano Zunino, DARIO GABRIEL PEREZ , Mario Garavaglia, Osvaldo A. Rosso

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)223-233
Number of pages11
JournalFractals
Volume12
Issue number2
DOIs
StatePublished - 1 Jun 2004

Keywords

  • Fractional Brownian Motion
  • Hurst Exponent
  • Laser Propagation
  • Signal Entropy
  • Time-Frequency Signal Analysis
  • Turbulence
  • Wavelet Analysis

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