Reduced Interference Time-Frequency Distributions: Applications to Acoustic Transients

Abstract

A new conceptualization of time-frequency (t-f) energy distributions is discussed in this paper. Many new t-f distributions with desirable properties may now be designed with relative ease by approaching the problem in terms of the ambiguity plane representation of the kernel. Careful attention to the design principles yields kernels which result in high resolution t-f distributions with a considerable reduction of the sometimes troublesome cross terms observed when using other distributions such as the Wigner Distribution (WD). When these new t-f distributions are applied to some common signals, fascinating new details emerge. Examples are provided for joint sounds and marine mammal sounds.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1990
Accession Number
ADA241104

Entities

People

  • William J. Williams

Organizations

  • University of Michigan

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Ambiguity
  • Calorific Value
  • Computations
  • Computer Science
  • Computers
  • Detection
  • Electrical Engineering
  • Engineering
  • Frequency
  • High Resolution
  • Low Pass Filters
  • Marine Mammals
  • Signal Detection
  • Time Domain
  • Two Dimensional
  • Underwater Sound

Readers

  • Radar Systems Engineering.
  • Statistical inference.
  • Theoretical Analysis.