Research/Patents/US 5854677
US 5854677Tier 1 — UAP Program Assignee

RLG OPTICAL NOISE INJECTOR

Assignee

Rockwell International

Filed as: ROCKWELL INTERNATIONAL CORPORATION,

Filed

Aug 31, 1990

Granted

Dec 29, 1998

Location

LAGUNA NIGUEL CA US

Abstract

An RLG OPTICAL NOISE INJECTOR places a random signal on a PZT driving one mirror controlling the optical path length (OPL) of a ring laser gyro (RLG) and the negative of the signal on a PZT driving a second mirror controlling the OPL. The OPL is therefore maintained constant while injecting random noise into the phase of the counterpropagating beams to avoid dynamic lock-in. Static lock-in may also be avoided by superposing an oscillatory signal on the random signal fed to the first PZT and the negative of the oscillatory signal on the random signal fed to the second PZT.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Aug 2, 1995

Rescinded

Jan 21, 1998

Duration

2 years, 5 months

Inventor

  • 1FREDERICK ARONOWITZ

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