Three & Four Product Surface-Wave Acousto-Optic Time Integrating Correlators.
Abstract
This abstract discloses a method and device for processing spread-spectrum and other wideband communications and radar signals to obtain three and four product correlated signals. A laser beam is split and shaped into first and second sheet beams. The first beam is directed to a first acousto-optic medium where it is doubly diffracted by first and second signals. The second beam is directed to a second acousto-optic medium which is spatially rotated 90 degs relative to the first acousto-optic medium where the second sheet beam is either singly diffracted by a third signal or doubly diffracted by a third signal and a fourth signal. The diffracted sheet beams are shaped into square beams, combined and directed to a photodiode area array.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 02, 1981
- Accession Number
- ADD008988
Entities
People
- Irwin J. Abramovitz
- Michael W. Casseday
- Norman J. Berg
Organizations
- United States Army