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    This study introduces a zero-lock-in ring laser gyroscope that uses a phase wrapping algorithm to eliminate lock-in and quantization errors. Mirror dithering is proposed as an alternative to mechanical dithering for improved performance.

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    Area of Science:

    • * Optical Engineering and Navigation Systems.
    • * Precision Measurement and Inertial Sensing.

    Background:

    • * Ring laser gyroscopes (RLGs) are crucial for navigation but are limited by random walk, quantization noise, and bias stability.
    • * Random walk and quantization noise impact alignment time, while bias stability affects long-term accuracy.
    • * Traditional RLGs often employ mechanical dither to overcome performance limitations.

    Purpose of the Study:

    • * To investigate methods for overcoming performance limitations in ring laser gyroscopes.
    • * To demonstrate the efficacy of a phase wrapping/unwrapping algorithm for error reduction.
    • * To explore alternative dithering techniques for enhanced RLG performance.

    Main Methods:

    • * Implementation of a zero-lock-in ring laser gyroscope design.
    • * Application of a phase wrapping/unwrapping algorithm, commonly used in interferometry.
    • * Analysis of RLG performance without mechanical dither, introducing mirror dithering.

    Main Results:

    • * The phase wrapping/unwrapping algorithm successfully removes lock-in and quantization errors.
    • * A zero-lock-in RLG design is demonstrated to be effective.
    • * Mirror dithering is presented as a viable alternative to mechanical dithering.

    Conclusions:

    • * Phase wrapping/unwrapping algorithms can significantly improve RLG accuracy by mitigating lock-in and quantization errors.
    • * A zero-lock-in RLG design, coupled with mirror dithering, offers a promising approach for enhanced navigation system performance.
    • * The proposed methods address key limitations in current ring laser gyroscope technology.