The use of segmented phase-only filters improves the performance of optical correlators. In
contrast to conventional filters that compare the scene image to a single reference, a …

Theoretical studies of the performance capabilities of binary phase-only filters (BPOFs),
constructed using both Fourier and Hartley transforms, are presented. A thorough analysis of …

The scaling and rotation sensitivity of a bianary phase-only correlator is studied and
compared to that of continuous phase-only correlator, classical correlator, and edge …

The performance of phase-only optical correlators is usually reduced if the filter-plane phase
differs from that prescribed for the classical matched filter. Current spatial light modulators …

An iterative technique has been used to improve the design and performance of the binary
phase version of a tandem-component correlation filter. The results are compared to a …

This article presents a survey of the literature dealing with spatial filter designs that have
found application in coherent optical correlator systems. Its purpose is to assist in one's …

A novel correlator architecture is described that is similar to the VanderLugt correlator (VLC)
but differs because the input Fourier transform (FT) is performed electronically rather than …

Extended coherent optical correlator architecture, described earlier,[1] has been used to
develop a technique called quasiphase-only filtering for obtaining matched spatial filters …

A nonlinear matched filter based image correlator is investigated. The linear matched filter is
expressed as a bandpass function containing the amplitude and phase of the Fourier …

A simple optoelectronic system for high-speed determination of binary phase-only filters for
use in an optical correlator is described. Filters determined using the system were …