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Proceedings Paper

Moments of a wave propagating with dispersion and damping
Author(s): Greg Okopal; Patrick Loughlin
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Paper Abstract

When a wave propagates in a medium with dispersion and damping, different frequencies propagate at different velocities and are attenuated at different rates. Accordingly, the wave changes as it propagates. These propagation effects can negatively impact automatic classification, since what is observed changes from location to location. We examine various moments of a wave, such as duration and bandwidth, which are often used as features for classification, and quantify the effects of dispersion and damping on these moments. We also identify moment-like features that are invariant to dispersion and damping, and thus may offer advantages over ordinary moments as features for classification.

Paper Details

Date Published: 4 May 2009
PDF: 8 pages
Proc. SPIE 7335, Automatic Target Recognition XIX, 733507 (4 May 2009); doi: 10.1117/12.818993
Show Author Affiliations
Greg Okopal, Univ. of Pittsburgh (United States)
Patrick Loughlin, Univ. of Pittsburgh (United States)


Published in SPIE Proceedings Vol. 7335:
Automatic Target Recognition XIX
Firooz A. Sadjadi; Abhijit Mahalanobis, Editor(s)

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