Moments of a wave propagating with dispersion and damping

Greg Okopal; Patrick Loughlin

doi:10.1117/12.818993

4 May 2009 Moments of a wave propagating with dispersion and damping

Greg Okopal, Patrick Loughlin

Proceedings Volume 7335, Automatic Target Recognition XIX; 733507 (2009) https://doi.org/10.1117/12.818993
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

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.

Citation Download Citation

Greg Okopal and Patrick Loughlin "Moments of a wave propagating with dispersion and damping", Proc. SPIE 7335, Automatic Target Recognition XIX, 733507 (4 May 2009); https://doi.org/10.1117/12.818993

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