A nonconventional joint-transform correlator (NJTC) is discussed. We show that the shift-invariant property of the usual joint-transform arrangement can be preserved. The advantages of the NJTC are the efficient use of the light source, the use of smaller transform lenses, higher correlation peaks, and a higher carrier fringe frequency.
© 1989 Optical Society of America
Francis T. S. Yu, Chenhua Zhang, Yong Jin, and Don A. Gregory, "Nonconventional joint-transform correlator," Opt. Lett. 14, 922-924 (1989)