Smoothly Modulated Frequency-Bounded Impulse Signals for Tomography

Abstract

A group of amplitude and frequency modulated signals which generate narrow synthesized pulses and which also have smoothly varying phase are described. The frequency-sweep (chirp) signals have exactly-defined frequency content and differentiable phase. These signals can be used with efficient resonant transducers, if the resonant frequency is adjustable, and they have adequate Doppler response for use with drifting apparatus.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1991
Accession Number
ADA239103

Entities

People

  • James F. Lynch
  • Timothy F Duda

Organizations

  • Woods Hole Oceanographic Institution

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplitude Modulation
  • Doppler Effect
  • Filters
  • Frequency
  • Frequency Shift
  • Matched Filters
  • Modulation
  • Oceanography
  • Oceans
  • Phase
  • Power Spectra
  • Pulse Compression
  • Resonant Frequency
  • Signal Processing
  • Spectra
  • Tomography
  • United States

Fields of Study

  • Engineering

Readers

  • Acoustical Oceanography.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Radar Systems Engineering.