Time-integrating acousto-optic correlation in Gaussian noise

Author

Kiruluta, A.M. ; Ristic, V.M. ; Lee, J.P.Y.

Author_Institution

Acousto-Opt. Res. Lab., Toronto Univ., Ont., Canada

Volume

2

fYear

1997

fDate

25-28 May 1997

Firstpage

666

Abstract

An acousto-optic time-integrating correlator with center frequency of 80 MHz, bandwidth of 40 MHz, a time aperture of 10 μs and a signal bandwidth of 20 MHz was designed and assembled. The influence of additive Gaussian noise on the correlation peak was measured and analyzed for varying SNR levels. A novel electronic method for estimating the overall optical misalignment in the processor was devised and tested. It represents a simple and robust alternative to purely optical procedures. The resolution accuracy of the method is shown to be limited by the CCD pixel dimensions. As a side result, the scaling law that apply to the output signal when using CCD detection is also derived. The correlator is particularly useful for radar signal processing

Keywords

Gaussian noise; acousto-optical correlation; radar interference; radar signal processing; signal resolution; 10 mus; 20 MHz; 40 MHz; 80 MHz; CCD detection; CCD pixel dimensions; Gaussian noise; SNR level; acousto-optic time-integrating correlator; additive Gaussian noise; assembly; correlation peak; design; electronic method; optical misalignment; output signal; resolution accuracy; scaling law; time-integrating acousto-optic correlation; Apertures; Assembly; Bandwidth; Charge coupled devices; Correlators; Frequency; Gaussian noise; Optical noise; Optical signal processing; Signal design;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 1997. Engineering Innovation: Voyage of Discovery. IEEE 1997 Canadian Conference on

Conference_Location

St. Johns, Nfld.

ISSN

0840-7789

Print_ISBN

0-7803-3716-6

Type

conf

DOI

10.1109/CCECE.1997.608325

Filename

608325