速率偏频激光陀螺过锁区误差特性分析

分析了速率偏频激光陀螺过锁区的误差特性。根据激光陀螺的闭锁方程,分别从数值模拟和理论分析两种途径对速率偏频激光陀螺过锁区误差特性进行了研究。结果一致表明:速率偏频激光陀螺过锁区的误差与锁区大小成正比,与过锁区的加速度的平方根成反比,与刻度因子的平方根成反比。文中具体给出了速率偏频激光陀螺过锁区的误差方程。过锁区误差为速率偏频激光陀螺的主要误差源。

Analysis on lock-in error characteristic for rate-biased laser gyro

The error characteristic of rate-biased laser gyro passing through lock-in was analyzed.Based on the lock-in equation of laser gyro,the error characteristic of rate-biased laser gyro passing through lock-in was studied by means of numerical simulation and theoretic analysis respectively.The results congruously show that the error of rate-biased laser gyro passing through lock-in is proportional to the lock-in length and inversely proportional to the square root of the acceleration passing through lock-in,and inversely proportional to the square root of scale factor.The error equation of rate-biased laser gyro passing through lock-in was given.Since the error of passing through lock-in is the main error source of rate-biased laser gyro,the error equation is helpful in designing high-accurate rate-biased laser gyro.