Research/Patents/US 6166689
US 6166689Tier 1 — UAP Program Assignee

ADAPTIVE BEAMFORMER WITH BEAM MAINLOBE MAINTENANCE.

Assignee

Lockheed/Skunk Works

Filed as: LOCKHEED MARTIN CORPORATION

Filed

Aug 12, 1970

Granted

Dec 26, 2000

Location

Bethesda MD (defense contractors)

Abstract

An adaptive beamformer and signal processor for sonar and other signal receptor arrays, in which beamforming is accomplished by correlation feedback loops providing matched weighting across the array. To constrain the adaptive beamformer thus comprised against cancellation of useful signals from a particular angular region, which normally is the beam mainlobe or boresight region, one or more spatial notch filters are interposed within the correlation feedback loops for preventing signal suppression within such angular region.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Aug 3, 1982

Rescinded

Jan 21, 1998

Duration

15 years, 5 months

Inventor

  • 1FRANK R. DICKEY

Sensitive facility: Bethesda MD (defense contractors)

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