Large Resonance Signature in Scattering from Submerged Elastic Targets in the Time and Frequency Domain
Abstract
There are a variety of resonances that can be excited when one scatters a wave from a submerged elastic target. It is usual to detect these resonances by observing the backscattered echoes from either pulses for the time domain case or by varying frequency in small step sizes in the frequency domain case. Many such resonances produce fairly small effects that can get lost in the background in any realistic environment. On the other hand several types of resonances are quite prominent and quite possible can be observed even in a fluctuating environment. Many of these resonances have characteristic return signals and offer a 'tell-tale' event of a particular target. We refer to such characteristic signals as resonance signature. In this study we illustrate a number of resonance signatures and describe the underlying physics or mathematics behind the event. We indicate how these signatures can be useful in target identification.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1991
- Accession Number
- ADA247751
Entities
People
- M. F. Werby
- S. A. Chin-bing
Organizations
- United States Naval Research Laboratory