Title :
Spectral modes estimation using Whittle-type criterion. Application to stellar speckle interferometry
Author :
Cavallin, Y. ; Ferrari, A. ; Lanteri, H.
Author_Institution :
Lab. d´Astrophys., Univ. de Nice Sophia-Antipolis, Nice, France
Abstract :
This communication adresses the parameter estimation problem using the minimization of a Whittle-type criterion when the spectrum parametrization is linear versus the unknown parameters. In this case, the global convergence of a particular iterative minimization algorithm is proved. This estimation method applies to stellar speckle interferometry for the visibility estimation problem. Simulations show the efficiency of the proposed method.
Keywords :
astronomical techniques; convergence of numerical methods; iterative methods; light interferometry; minimisation; parameter estimation; speckle; stellar radiation; Whittle type criterion minimization; estimation method; global iterative minimization convergence; iterative minimization algorithm; parameter estimation problem; spectral mode estimation; spectrum parametrization; stellar speckle interferometry; visibility estimation problem; Abstracts; Photonics; Speckle;
Conference_Titel :
Signal Processing Conference, 2002 11th European
Conference_Location :
Toulouse
