Digital electronics meets its match (acoustooptic devices)

Author

Goutzoulis, Anastasios P. ; Abramovitz, Irwin J.

Author_Institution

Westinghouse Res. & Dev. Center, Pittsburgh, PA, USA

Volume

25

Issue

8

fYear

1988

Firstpage

21

Lastpage

25

Abstract

The promise shown by acoustooptic (AO) spectrum analyzers and correlators in field-test prototypes for radar, communications and electronic-warfare surveillance is discussed. The principle of operation of AO devices is explained, and its use for correlation and convolution is examined. Two types of Bragg cell (the basic AO component) are described: surface-acoustic-wave (SAW) and bulk cells. The use of a 2-D AO correlator (i.e. one that moves its output beam over an array of photodetectors rather than a single line) in a spread-spectrum receiver is presented to exemplify the use of AO devices.<>

Keywords

acousto-optical devices; correlators; electronic warfare; radar; spectral analysers; spread spectrum communication; telecommunication; Bragg cell; SAW; acoustooptic devices; acoustooptic spectrum analysers; bulk cells; communications; convolution; correlators; electronic-warfare surveillance; photodetectors; radar; spread-spectrum receiver; surface-acoustic-wave; Acoustic beams; Acoustical engineering; Acoustooptic devices; Aerospace electronics; Frequency; Laser beams; Prototypes; Radar; Signal processing; Spectral analysis;

fLanguage

English

Journal_Title

Spectrum, IEEE

Publisher

ieee

ISSN

0018-9235

Type

jour

DOI

10.1109/6.7159

Filename

7159