Research/Patents/US 4991144
US 4991144

DOPPLERIZED ECHO REPEATER

Assignee

Filed

Mar 29, 1963

Granted

Feb 5, 1991

Location

Abstract

The present invention relates generally to submarine simulating decoy and particular is a sonar system for receiving the acoustical search pulse from an enemy or other vehicle and converting it into a dopplerized sonar signal which is then broadcast back to the enemy vessel for deception and tactical combat purposes.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Oct 28, 1981

Rescinded

Nov 1, 1990

Duration

9 years

Technology Domains

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records