Research/Patents/US 5253221
US 5253221

NULL STEERING DEVICE

Assignee

Filed

Jun 17, 1977

Granted

Oct 12, 1993

Location

TX US

Abstract

A device for steering a null in a sonar beam pattern resolves first and snd beam signals into four quadrature components. These components are multiplied in multiplying digital to analog converters by binary number factors, derived in accordance with the desired null angle, to provide analog signals that are combined in a summing amplifier to provide analog output corresponding to acoustic energy received by a beam having a null at the desired angle.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Dec 3, 1981

Rescinded

Apr 23, 1993

Duration

11 years, 4 months

Inventor

  • 1DIXON W. COULBOURN

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