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

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.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1986
Accession Number
ADA180307

Entities

People

  • Jim P. Lee

Organizations

  • Defence Research and Development Canada

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Attenuation
  • Acousto-Optic Modulators
  • Analyzers
  • Bandwidth
  • Carrier Frequencies
  • Delta Functions
  • Detection
  • Detectors
  • Frequency
  • Leading Edges
  • Shape
  • Spatial Distribution
  • Spectrum Analysis
  • Spectrum Analyzers
  • Trailing Edges
  • Two Dimensional
  • Weighting Functions

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.
  • Radar Systems Engineering.