Proposal for the determination of an adequate sampling rate for laser propagation through turbulent media by means of the wavelet transform

GUSTAVO FUNES; ÁNGEL FERNÁNDEZ; DARÍO G. PÉREZ; LUCIANO ZUNINO; EDUARDO SERRANO

Ciudad de Buenos Aires

Congreso; 4to Congreso de Matemática Aplicada, Computacional e Industrial (IV MACI 2013); 2013

Asociación Argentina de Matemática Aplicada, Computacional e Industrial

Sampling rate determination and frequency content for a wave propagating in a turbulent media are still unsettled experimental problems. Many papers about estimating properties of the optical turbulence seem to use an ad hoc assumption that the sampling frequency used is enough to perform a proper measurement. On the other hand, other authors estimate the optimal sampling rate via fast Fourier transform (FFT), defining a cut-off frequency with an arbitrary criterion. The aim of this paper is to propose an alternative way to determine a proper sampling rate prevent any loss of information and, at the same time, to avoid oversampling by means of the discrete wavelet transform.