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

H - Electricity

01

S

345/10

H01S 3/083 (2006.01) G01C 19/66 (2006.01)

Patent

CA 1259687

ABSTRACT OF THE DISCLOSURE 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 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.

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