Accession Number : ADA332288
Title : Use of Bird Activity Modulation Waveforms in Radar Identification.
Corporate Author : BIRD STRIKE COMMITTEE EUROPE VOJENS (DENMARK)
Personal Author(s) : Houghton, E. W. ; Blackwell, F.
PDF Url : ADA332288
Report Date : 13 OCT 1972
Pagination or Media Count : 33
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.
Descriptors : *RADAR, *BIRDS, *RADAR SIGNATURES, AIRCRAFT, WAVEFORMS, TRACKING, IDENTIFICATION, FLIGHT, RADAR REFLECTIONS, AERODYNAMIC CHARACTERISTICS, ONLINE SYSTEMS, CATALOGS, WINGS, MODULATION, REST.
Subject Categories : Biology
Active & Passive Radar Detection & Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE