Research Catalog

Time-frequency analysis of a moving human Doppler signature

Title
Time-frequency analysis of a moving human Doppler signature [electronic resource] / by Traian Dogaru, Calvin Le, and Getachew Kirose.
Author
Dogaru, Traian.
Publication
Adelphi, MD : Army Research Laboratory, [2009]

Available Online

http://purl.access.gpo.gov/GPO/LPS114007

Details

Additional Authors
  • Le, Calvin.
  • Kirose, Getachew.
  • U.S. Army Research Laboratory.
Description
vi, 26 p. : digital, PDF file.
Summary
In this report we analyze the Doppler signature of a moving human with the purpose of finding temporal change patterns that would allow detection and classification of movers. The analysis is based on computer models that simulate the operation of a pulse-Doppler radar. We start with an animated human mesh in walking motion and compute the frame-by-frame radar return using electromagnetic solvers such as the Finite Difference Time Domain (FDTD). The results are processed in the time-frequency domain via Short-Time Fourier Transforms (STFT) and displayed as spectrograms. In the end, we try to distinguish patterns in these spectrograms that are characteristic to a certain human motion type. The analysis emphasizes the phenomenological aspects of the Doppler signature, by looking at the relative contribution of various body parts and the effect of frequency, aspect angle, polarization and other radar parameters.
Series Statement
ARL-TR-4728
Uniform Title
ARL/TR ; 4728.
Subject
  • Doppler effect > Computer simulation
  • Human mechanics > Effect of radiation on > Computer simulation
  • Active and passive radar detection & equipment
  • Doppler radar
  • Pattern recognition
  • Humans
  • Walking
  • Finite difference time domain
  • Motion
  • Signatures
  • Aspect angle
  • Fourier transformation
  • Computerized simulation
  • STFT(SHORT-TIME FOURIER TRANSFORM)
  • SPECTROGRAMS
Note
  • Final rept. 2007-2008.
  • Title from PDF title screen (viewed June 23, 2009).
  • "February 2009."
Bibliography (note)
  • Includes bibliographical references (p. 24).
Access (note)
  • APPROVED FOR PUBLIC RELEASE.
System Details (note)
  • Mode of access: Internet from the ARL web site. Address as of 6/23/09: http://www.arl.army.mil/arlreports/2009/ARL-TR-4728.pdf ; current access available via PURL.
Call Number
GPO Internet D 101.133:4728
OCLC
320412805
Author
Dogaru, Traian.
Title
Time-frequency analysis of a moving human Doppler signature [electronic resource] / by Traian Dogaru, Calvin Le, and Getachew Kirose.
Imprint
Adelphi, MD : Army Research Laboratory, [2009]
Series
ARL-TR-4728
ARL/TR ; 4728.
Access
APPROVED FOR PUBLIC RELEASE.
System Details
Mode of access: Internet from the ARL web site. Address as of 6/23/09: http://www.arl.army.mil/arlreports/2009/ARL-TR-4728.pdf ; current access available via PURL.
Bibliography
Includes bibliographical references (p. 24).
Connect to:
http://purl.access.gpo.gov/GPO/LPS114007
Indexed Term
STFT(SHORT-TIME FOURIER TRANSFORM)
SPECTROGRAMS
Added Author
Le, Calvin.
Kirose, Getachew.
U.S. Army Research Laboratory.
Gpo Item No.
0324-A-01 (online)
Sudoc No.
D 101.133:4728
Research Call Number
GPO Internet D 101.133:4728
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