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High resolution angular sensorSpecifications for the pointing stabilization system of the large space telescope were used in an investigation of the feasibility of reducing ring laser gyro output quantization to the sub-arc-second level by the use of phase locked loops and associated electronics. Systems analysis procedures are discussed and a multioscillator laser gyro model is presented along with data on the oscillator noise. It is shown that a second order closed loop can meet the measurement noise requirements when the loop gain and time constant of the loop filter are appropriately chosen. The preliminary electrical design is discussed from the standpoint of circuit tradeoff considerations. Analog, digital, and hybrid designs are given and their applicability to the high resolution sensor is examined. the electrical design choice of a system configuration is detailed. The design and operation of the various modules is considered and system block diagrams are included. Phase 1 and 2 test results using the multioscillator laser gyro are included.
Document ID
19810022985
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Gneses, M. I. (Raytheon Co. Sudbury, MA, United States)
Berg, D. S. (Raytheon Co. Sudbury, MA, United States)
Date Acquired
September 4, 2013
Publication Date
June 1, 1981
Subject Category
Instrumentation And Photography
Report/Patent Number
NASA-CR-161843
ER81-4177
Accession Number
81N31528
Funding Number(s)
CONTRACT_GRANT: NAS8-31840
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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