RING LASER GYROSCOPE OUTPUT OPTICS DETECTION SYSTEM
Assignee
Litton Systems
Filed as: LITTON SYSTEMS, INC., A CORP. OF DE
Filed
Jan 12, 1990
Granted
May 26, 1992
Location
WOODLAND HILLS CA US
Abstract
A ring laser gyroscope output optics detection system, including a rotational sensing system and cavity length control system for a multioscillator ring laser gyroscope, is disclosed herein that can operate with a simple upright symmetric optics mechanism, where the required signal separation is performed fully electronically. In a preferred embodiment, signal separation circuitry is provided which performs a 90° or π/2 radians phase shift to one of a set of heterodyned signals in order to extract the sagnac effect modulated Faraday frequency signals WA and WB. In order to deal with the inherent problems of crosstalk present in a Faraday biased system, alternative signal separation schemes suggest the use of a 45° or π/4 radians phase shift, as well as a 60° or π/3 radians phase shift. Complementary cavity length control schemes are presented in both fixed component and digitally controlled formats.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Apr 3, 1991
Rescinded
May 23, 1991
Duration
1 month
Inventor
- 1ROBERT A. MITCHELL
Technology Domains
Click a domain to browse all patents in this category.
Record Details
- Patent number
- US 5116132
- Application
- 07464164
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
Browse by Assignee
Litton SystemsMore from this assignee
EXTERNAL SCATTER REMOVAL SYSTEM
Litton Systems
PASSIVE FIBER OPTIC PLURAL SECTION SENSOR HAVING MANDREL WOUND REFERENCE AND SENSING ARMS
Litton Systems
APPARATUS AND METHOD FOR CORRECTING RING LASER GYROSCOPE PHASE ERRORS AT TURNAROUND
Litton Systems
RING LASER GYROSCOPE WITH A NON-LOSS INDUCING MODE SUPPRESSION MECHANISM
Litton Systems
CAVITY LENGTH CONTROL APPARATUS FOR A MULTI-OSCILLATOR
Litton Systems
NON-PENDULOUS COUNTER-BALANCED DITHER MECHANISM FOR LASER GYRO
Litton Systems
Related by domain
ARTICLE COMPRISING A UNIPOLAR SUPERLATTICE LASER
LUCENT TECHNOLOGIES INC.
INTRACAVITY QUANTUM WELL PHOTODETECTOR INTEGRATED WITHIN A VERTICAL-CAVITY SURFACE-EMITTING LASER AND METHOD OF OPERATING SAME
CALIFORNIA, UNIVERSITY OF, THE, REGENTS OF, THE
HIGH-PERFORMANCE, LOW-COST INERTIAL GUIDANCE SYSTEM
Charles Stark Draper Lab
BALLISTIC MISSILE REMOTE TARGETING SYSTEM AND METHOD
Charles Stark Draper Lab
ACCELERATION SENSING RING LASER GYROSCOPE
ALLIED-SIGNAL INC. A CORPORATION OF DELAWARE
SPLIT-GAIN MULTIMODE RING LASER GYROSCOPE OUTPUT OPTICS DETECTION SYSTEM
Litton Systems