Share Email Print
cover

Proceedings Paper

Identification of spherical acoustic objects in motion
Author(s): Roger F. Dwyer
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Often in applications it is desired to remotely identify an object from its reflected signature. In active sonar the object is insonified by a transmitted waveform which may be broadband (modulated) or narrowband and the received pressure is processed to localize and identify the object. Identification usually requires a broadband transmitted waveform. In this paper the received pressure time series from spherical acoustic objects in motion that have been insonified by linear frequency modulated waveforms are used to identify the objects. Specifically, the unknown object's unknown Doppler using an unique property of the fourth- order spectrum is extracted and then its transfer function is extracted. The results for five spherical acoustic objects in motion are discussed. Three methods, deconvolution, matched filtering, and fourth-order spectrum deconvolution to extract the object's transfer function are compared.

Paper Details

Date Published: 28 October 1994
PDF: 8 pages
Proc. SPIE 2296, Advanced Signal Processing: Algorithms, Architectures, and Implementations V, (28 October 1994); doi: 10.1117/12.190865
Show Author Affiliations
Roger F. Dwyer, Naval Undersea Warfare Ctr. (United States)


Published in SPIE Proceedings Vol. 2296:
Advanced Signal Processing: Algorithms, Architectures, and Implementations V
Franklin T. Luk, Editor(s)

© SPIE. Terms of Use
Back to Top