Research/Patents/US 5485273
US 5485273Tier 2 — Research Body

RING LASER GYROSCOPE ENHANCED RESOLUTION SYSTEM

Assignee

Litton Systems

Filed as: LITTON SYSTEMS, INC.

Filed

Apr 22, 1991

Granted

Jan 16, 1996

Location

PASADENA CA US

Abstract

Disclosed herein is a Ring Laser Gyroscope Enhanced Resolution System comprising, in a preferred embodiment, a sampling frequency modulation phase-locked loop (or "chirp") which is used in combination with the fast filter. Enhanced resolution is achieved by using the fast filter (preferably a moving average digital filter) to gather optically integrated rate data and accumulate this data. During the data gathering process, the accumulated data is sampled at a rate set by a frequency modulated ("chirper") phase-locked loop in order to remove undesirable data due to aliasing effects upon the digital filter. In this manner, an enhanced resolution of the gyroscope angular measurement is achieved.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Sep 13, 1991

Rescinded

Apr 12, 1995

Duration

3 years, 7 months

Inventor

  • 1JOHN G. MARK

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