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Proceedings Paper

Time-frequency analysis of radar target backscatter
Author(s): Christopher J. McCormack; Valdis V. Liepa; William J. Williams
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Paper Abstract

Studies of two orbiting spheres demonstrate the usefulness of time-frequency distributions for the analysis of radar signals. The spheres served as a simplified model for moving blades of an engine propeller or helicopter rotor. Illuminating the moving spheres with a continuous wave radar generated a backscatter signal which was difficult to interpret in either the time or the frequency domains. By applying the binomial distribution (a discrete time-frequency distribution) we could clearly associate each sphere with its corresponding doppler return. The binomial distribution provided a detailed view of the target dynamics, opening the way for target classification and identification. The structures and details available in the time- frequency domain were not readily exploited in the original signal representation.

Paper Details

Date Published: 7 June 1995
PDF: 12 pages
Proc. SPIE 2563, Advanced Signal Processing Algorithms, (7 June 1995); doi: 10.1117/12.211391
Show Author Affiliations
Christopher J. McCormack, Univ. of Michigan (United States)
Valdis V. Liepa, Univ. of Michigan (United States)
William J. Williams, Univ. of Michigan (United States)

Published in SPIE Proceedings Vol. 2563:
Advanced Signal Processing Algorithms
Franklin T. Luk, Editor(s)

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