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Title: Digital sonar system

Abstract

A transponder of an active digital sonar system identifies a multifrequency underwater activating sonar signal received from a remote sonar transmitter. The transponder includes a transducer that receives acoustic waves, including the activating sonar signal, and generates an analog electrical receipt signal. The analog electrical receipt signal is converted to a digital receipt signal and cross-correlated with a digital transmission signal pattern corresponding to the activating sonar signal. A relative peak in the cross-correlation value is indicative of the activating sonar signal having been received by the transponder. In response to identifying the activating sonar signal, the transponder transmits a responding multifrequency sonar signal. 4 figs.

Inventors:
;
Issue Date:
Research Org.:
Univ. of Washington, Seattle, WA (United States)
OSTI Identifier:
131936
Patent Number(s):
5,469,403
Application Number:
PAN: 7-929,881
Assignee:
Univ. of Washington, Seattle, WA (United States)
DOE Contract Number:  
FG06-91ER40614
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 21 Nov 1995
Country of Publication:
United States
Language:
English
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; SONAR; DESIGN; DIGITAL SYSTEMS; SOUND WAVES; ANALOG-TO-DIGITAL CONVERTERS

Citation Formats

Young, K K, and Wilkes, R J. Digital sonar system. United States: N. p., 1995. Web.
Young, K K, & Wilkes, R J. Digital sonar system. United States.
Young, K K, and Wilkes, R J. Tue . "Digital sonar system". United States.
@article{osti_131936,
title = {Digital sonar system},
author = {Young, K K and Wilkes, R J},
abstractNote = {A transponder of an active digital sonar system identifies a multifrequency underwater activating sonar signal received from a remote sonar transmitter. The transponder includes a transducer that receives acoustic waves, including the activating sonar signal, and generates an analog electrical receipt signal. The analog electrical receipt signal is converted to a digital receipt signal and cross-correlated with a digital transmission signal pattern corresponding to the activating sonar signal. A relative peak in the cross-correlation value is indicative of the activating sonar signal having been received by the transponder. In response to identifying the activating sonar signal, the transponder transmits a responding multifrequency sonar signal. 4 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {11}
}