Digital Adaptation Algorithms of Adaptive Optics Corrected Images

摘要

The technology is considered of space object image obtainment with high angular resolutin,based on the adaptive tuning of image spatial spectra (digital adaption), corrected by adaptive optics. As the basis of the technology, the algorithm is taken of the integral equation of the I-st kind of convolution type with unknown core and unprecizely given right part. It's shown the procedure of the inverse operator construction for this equation solution is connected with minimization of nonlinear regularizing multiextremeal functionals and could be realized on the base of global optimization methods. The structure of multiextremel functionals is analysed, and the main global extremum search methods are researched. It is shown, that as the basis of the optimal construction of the channel for the obtainment of images with high resolution, the principle must be taken of the sequential reduction of the global extremum search space ddimensionality, and what's more, the predetector processing of the wavefront by the adaptive optics is the first stage of this reduction. The results are given of numericla modelling including the examples of the distorted and restorated images of model objects under different signal-to-noise ratios.