A need for very high probability of detection in modern passive Electronic Combat systems has stimulated development of receivers with ever-wider bandwidths. As receiver bandwidths increase, some portions of the RF spectrum will begin to have a probability of signal overlap approaching unity. Wideband receivers, when operating in these environments with increasing signal densities and new modern modulation techniques, must incorporate computationally intensive algorithms within the receiver architecture to ensure reliable performance. Acousto-optic processing subsystems offer a real- time solution to several of the computationally intensive signal processing functions required in wideband EW systems. The status of the Electronic Warfare Channelize, an acousto-optic subsystems that is being developed by DARPA with the Naval Research Laboratory for the military will be discussed in this paper.
Mark D. Koontz, Mark D. Koontz,
"Transition of acousto-optics into electronic combat (EC) systems", Proc. SPIE 2236, Transition of Optical Processing into Systems 1994, (17 June 1994); doi: 10.1117/12.178057; https://doi.org/10.1117/12.178057