An advanced optimal spectral estimation algorithm in Fourier spectroscopy with application to remote sensing of the atmosphere

Abstract

The technique relies on the generalized cross-validation criterion and retains all the computational characteristics that are proper to the fast Fourier transform. The procedure yields adaptive apodizing functions that impove the convergence of the Fourier transform. Numerical examples are carried out using synthetic spectra computed by a high-resolution radiative transfer code. The effect of additive noise is also analyzed. The application of the technique to remote sensing of the atmosphere is discussed. -from Authors