Readout for a ring laser angular rate sensor

Details Readout for a ring laser angular rate sensor Readout for a ring laser angular rate sensor

1988-03-31

1988-12-13

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1964

Patent

active

047914602

ABSTRACT:
A pair of photodetector output signals are positioned so as to be responsive to the interference pattern produced by the pair of laser beams of the ring laser. The photodetectors are positioned such that the output signals are in phase quadrature. A second pair of signals is derived from the first pair of signals in which the second pair are displaced in phase relative to the first pair and are also in phase quadrature. The two pairs of signals are signal processed to enhance resolution of the ring laser readout.

REFERENCES:
patent: 4504146 (1985-03-01), Morgan
patent: 4529311 (1985-08-01), Morgan et al.
patent: 4533250 (1985-08-01), Callaghan et al.
patent: 4547072 (1985-10-01), Yoshida et al.
patent: 4566794 (1986-01-01), Hanse
patent: 4595293 (1986-06-01), Geen

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