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An Analysis of Echoes from a Solid Elastic Sphere in Water

Hickling, Robert (1962) An Analysis of Echoes from a Solid Elastic Sphere in Water. California Institute of Technology , Pasadena, CA. (Unpublished)

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It is well-known in sonar work that the pulse form of a direct echo from a target bears little relation to the form of the original signal. This is true even for regularly shaped bodies, such as a sphere. In this paper, the case of a homogeneous elastic sphere in water is examined theoretically and it is shown in comparison with experimental results, that the observed effects originate from vibrations induced in the sphere by the incident sound. Calculated results are presented for a variety of solid materials and it seems that echo forms could possibly provide information about the size and constitution of a sonar target.

Item Type:Report or Paper (Technical Report)
Additional Information:Department of Naval Research Department of the Navy Contract Nonr-220(28). Report No. 85-20.
Funding AgencyGrant Number
Office of Naval Research (ONR)Nonr-220(28)
Record Number:CaltechAUTHORS:20150717-161444531
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:58925
Deposited On:21 Jul 2015 21:41
Last Modified:03 Oct 2019 08:41

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