Physics
Scientific paper
Jun 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981racy.rept.....g&link_type=abstract
Final Report Raytheon Co., Sudbury, MA. Equipment Div.
Physics
Angular Resolution, High Resolution, Laser Gyroscopes, Phase Locked Systems, Ring Lasers, Systems Analysis, Block Diagrams, Crystal Oscillators, Hubble Space Telescope, Loops, Ring Lasers, Signal Processing, Tiltmeters
Scientific paper
Specifications 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.
Berg D. S.
Gneses M. I.
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