Abstract

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 optically. We present results in which the FT’s are reduced to binary phase-only filters (BPOF’s); the required multiplication of the input and the reference FT’s (performed optically in the VLC) is performed electronically simply by use of a single xor logic gate. The problematic zero order and symmetric correlation peak are shown to be removed by use of a chirp-encoded BPOF.

© 2000 Optical Society of America

Design elements of binary phase-only correlation filters

David L. Flannery, John S. Loomis, and Mary E. Milkovich
Appl. Opt. 27(20) 4231-4235 (1988)

Bandwidth considerations for binary phase-only filters

Fred M. Dickey, K. Terry Stalker, and J. Jeff Mason
Appl. Opt. 27(18) 3811-3818 (1988)

Optical binary phase-only filters for circular harmonic correlations

Luc Leclerc, Yunlong Sheng, and Henry H. Arsenault
Appl. Opt. 30(32) 4643-4649 (1991)

Amplitude encoded phase-only filters

Mary A. Flavin and Joseph L. Horner
Appl. Opt. 28(9) 1692-1696 (1989)

Reduction of false correlations with binary phase-only filters

Thomas H. Barnes, Kiyofumi Matsuda, and Naotake Ooyama
Appl. Opt. 27(18) 3785-3790 (1988)