Digital sonar system

Patent · Sun Jan 01 00:00:00 EST 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: Univ. of Washington, Seattle, WA (United States)
• 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

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