A new incoherent optical approach to an important digital signal processing problem in radio astronomy is presented. It greatly simplifies the many thousands of 1-bit digital cross-correlations that can be required by using a digitally controlled light panel and photodiode array.
© 1980 Optical Society of America
T. W. Cole, "Incoherent optical 1-bit cross-correlators for radio antenna arrays," Appl. Opt. 19, 2169-2173 (1980)