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Signal processing system for correcting ring laser gyroscope readout

  • US 5,094,537 A
  • Filed: 03/08/1991
  • Issued: 03/10/1992
  • Est. Priority Date: 03/08/1991
  • Status: Expired due to Term
First Claim
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1. A ring laser gyroscope system comprising in combination:

  • a pair of laser beams propagating in opposite directions about a closed-loop path producing an interference pattern of alternating relatively bright and dark regions;

    means for generating a pair of sinusoidal output signals nominally in a quadrature relation in response to movement of said pattern;

    means for correcting a quadrature error in the phase relation between said pair of sinusoidal output signals, andsaid correcting means including means to add to one signal of said pair a portion of the other signal of said pair where the magnitude of said portion is a function of said deviation.

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