Abstract
A diffraction intensity correlation with a holographic filter recorded with a random phase mask is considered. The linearity of processing in intensity is achieved by averaging the coherent light in the output plane. As compared to amplitude coherent correlators, in this correlator there is no influence of the input image phase structure and pulse response, the requirements for adjustment accuracy are allowed, parallelism and multichannelity of high resolution processing being preserved in this case. The random phase mask application for filter recording made it possible to reduce the required dynamic range of a hologram and refuse the use of continuous scanning deflectors. Comparative analysis of this correlator with the diffraction intensity correlator, in which spatial radiation coherence is distorted immediately before the filtering process, is made. The results of investigations on such characteristics as SNR, light loss coefficient, the degree of spatial invariance of processing are presented.
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