Signal processing system for correcting ring laser gyroscope readout
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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Abstract
An RLG signal processing system in which RLG quadrature errors are corrected by adding to one signal a portion of the other signal whose magnitude is a function of the magnitude of the quadrature error. Output buffer amplifiers restore the output signal to equal amplitude.
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6 Claims
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1. A ring laser gyroscope system comprising in combination:
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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, and said 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. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification