大型环形laser陀螺laser参数波动的卡尔曼滤波补偿
Compensation of the laser parameters fluctuations in large ring laser gyros: a Kalman filter approach
摘要：
氦氖激光陀螺是目前测量绝对角速度最精确的装置。其性能的限制来自激光器的非线性动力学。根据Lamb半经典理论，我们找到了一组影响系统时间稳定性的临界参数。我们提出了一种方法来估计激光参数的长期漂移，并从旋转测量中过滤掉激光动力学效应。基于激光动力学的微扰解的参数估计过程允许我们应用卡尔曼滤波理论来估计角速度。全面的蒙特卡罗模拟的结果和初步分析的实验数据从环形激光器原型G-Pisa的结果显示和讨论。
英文摘要：
He-Ne ring laser gyroscopes are, at present, the most precise devices for absolute angular velocity measurements. Limitations to their performance come from the non--linear dynamics of the laser. Following the Lamb semi-classical theory, we find a set of critical parameters affecting the time stability of the system. We propose a method for estimating the long term drift of the laser parameters and for filtering out the laser dynamics effects from the rotation measurement. The parameter estimation procedure, based on the perturbative solutions of the laser dynamics, allow us to apply Kalman Filter theory for the estimation of the angular velocity. Results of a comprehensive Monte Carlo simulation and results of a preliminary analysis on experimental data from the ring laser prototype G-Pisa are shown and discussed.
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