Оцінка інтерференційного шуму при кореляційному аналізі випадкових бінарних фазових масок в оптичній інформаційній системі

Abstract

It is considered the models of an interference noise producing as a result of a cross-correlation of two random binary phase masks consisted of phase elements with binomial spatial distribution. The process of an interference noise producing on the first diffraction order of the joint transform correlator is analyzed. It is shown, that the signal-to-noise ratio on the correlator’s output is increased, if a quantity of phase elements in two masks is enlarged.