просторово-частотний спектр

Optical-digital processor for thermal imaging surveillance systems image processing

This paper investigates ways to increase the efficiency of coherent optical spectrum analyzers (COSA). The increase in efficiency is achieved through usage of space-time discrete light modulator in the COSA input and through recording of the spatial spectrum with a matrix detector (MD). The matching of the parameters of the modulator, Fourier lens and MD allowed to improve the technical characteristics of COSA. The matching means the choice of parameters of COSA’s components, which allow to obtain improved characteristics of the COSA.