Use of Bird Activity Modulation Waveforms in Radar Identification.

Abstract

Positive "on-line"1' identification of any target is very difficult using primary radar. Single birds modulate radar echo signals with periodic waveforms related to their wingbeat frequency and to their wing flapping and wing rest periods. Data from these complex waveforms can be extracted by radar "signature" analysis methods and compared with corresponding data obtained from known species (by tracking them with a radar fitted with a telescope). Identification is obtained by correlating known and unknown data. Actual "on-line" identification appears feasible if a comprehensive catalogue of waveforms and other flight characteristics of known species is collected and used. These methods can immediately be put to use in investigating the, distribution of species hazardous to aircraft.

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Document Details

Document Type
Technical Report
Publication Date
Oct 13, 1972
Accession Number
ADA332288

Entities

People

  • E. W. Houghton
  • F. Blackwell

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Birds
  • Cells
  • Sine Waves
  • Square Waves

Fields of Study

  • Environmental science

Readers

  • Aerodynamics/Aeronautics.
  • Radar Systems Engineering.
  • Seismology

Technology Areas

  • Space
  • Space - Space Objects