Accession Number : ADA180307

Title :   Acousto-Optic Spectrum Analyzer: Temporal Response and Detection of Pulsed Signals.

Descriptive Note : Technical note,

Corporate Author : DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)

Personal Author(s) : Lee,Jim P

PDF Url : ADA180307

Report Date : Dec 1986

Pagination or Media Count : 30

Abstract : This report describes the temporal response of an acoustooptic spectrum analyzer to pulse modulated continuous wave signals. The detected waveforms from the outputs of a real time photodetector array are analyzed as a function of pulse width, weighting function parameters, and relative photodetector to spectral centroid location. The input pulse envelope is modified in the forms of signal duration stretching, the appearance of a flattop, multiple humps, and longer rise and fall times. Various schemes are discussed on the determination of the pulse width from the detected waveform. Keywords: ACOUSTOOPTIC SPECTRUM ANALYZER; PULSEWIDTH DETERMINATION; ACOUSTOOPTIC RECEIVER; BRAGG CELLS; CANADA.

Descriptors :   *ARRAYS, *PHOTODETECTORS, *ACOUSTOOPTICS, *SPECTRUM ANALYZERS, BRAGG ANGLE, CANADA, CELLS, CENTER OF GRAVITY, ENVELOPE(SPACE), INPUT, REAL TIME, RECEIVERS, SIGNAL PROCESSING, SPECTRA, SPECTRUM ANALYZERS, WEIGHTING FUNCTIONS, WIDTH, PULSE MODULATION, BRAGG SCATTERING

Subject Categories : Acoustooptic and Optoacoustic Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE