Digital sonar system

Patent · 01 January 1995

OSTI ID:870174

Young, Kenneth K ^[1]; Wilkes, R Jeffrey ^[1]

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1. Seattle, WA

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.

• Research Organization: University of Washington
• DOE Contract Number: FG06-91ER40614
• Assignee: Board of Regents of University of Washington (Seattle, WA)
• Patent Number(s): US 5469403
• OSTI ID: 870174
• Country of Publication: United States
• Language: English

Related Subjects

/367/
acoustic
acoustic wave
acoustic waves
activating
active
analog
analog electrical
converted
correlation value
corresponding
cross-correlated
cross-correlation
digital
digital sonar
electrical
generates
identifies
identifying
including
indicative
multifrequency
pattern
peak
receipt
received
receives
relative
remote
responding
response
signal
signal received
sonar
transducer
transmission
transmits
transmitter
transponder
underwater
value
waves