Research/Patents/US 5949738
US 5949738

SONAR TARGET SIMULATION

Assignee

Filed

May 1, 1972

Granted

Sep 7, 1999

Location

Abstract

Sonar echoes of length s/c (cos θi +cos θr)+T are slated by transmitting properly timed replicas of an illuminating signal from a number of projectors spaced along a cable of target length s. Because of the length of this cable, magnetic anomaly effects can be simulated by passing a current through a conductor within it.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Sep 2, 1982

Rescinded

Nov 13, 1998

Duration

16 years, 2 months

Inventor

  • 1FRANCIS J. MURPHREE

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