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High resolution ring laser gyroscope readout

  • US 5,493,396 A
  • Filed: 11/30/1993
  • Issued: 02/20/1996
  • Est. Priority Date: 11/30/1993
  • Status: Expired due to Term
First Claim
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1. A readout device for use with a ring laser gyroscope having a first readout sensor and a second readout sensor wherein the first readout sensor and the second readout sensor .produce a periodic signal, the readout device comprising:

  • first sample and hold means attached to a first readout sensor, the first sample and hold means for sampling the first readout sensor and producing a first sample and hold signal indicative of the sampled first readout sensor;

    second sample and hold means attached to the second readout sensor, the second sample and hold means for sampling the second readout sensor and producing a second sample and hold signal indicative of the sampled second readout sensor;

    first flash conversion means attached to the first sample and hold means for receiving the first sample and hold means output and producing a first conversions means output, the first conversion means output being a digital signal indicative of the level of the first sample and hold means output;

    second flash conversion means attached to the second sample and hold means for receiving the second sample and hold means output and producing a second conversions means output, the second conversion means output being a digital signal indicative of the level of the second sample and hold means output;

    signal processing means attached to the first flash conversion means and the second flash conversion means for receiving the first flash conversion means output and the second flash conversion means output over a predetermined period of time and producing a gyro output signal based upon the first flash conversion means output and the second conversion means output wherein a sample signal is provided to the first and second sample and hold means a multiple number of times so that sampling occurs a plurality of times in each cycle of the periodic signal.

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