激光陀螺捷联惯性导航系统误差分析及仿真计算

Error Analysis and Simulation of Ring Laser Gyro Strapdown Inertial Navigation System

摘要: 激光陀螺随机游走现象的存在，严重影响了捷联惯性导航系统的导航性能。本文用数学分析的方法推导出激光陀螺随机游走造成的系统导航误差标准偏差的解析表达式，以便定量地研究激光陀螺随机游走对系统精度的影响，并提出改进措施。同时按照给定的飞行轨迹和随机游走系数，进行了系统数学仿真计算，对仿真计算结果进行了分析。

Abstract: There is a badly influence of the existence of ring laser gyro’s random walk on the performance of ring laser gyro strapdown inertial navigation system(SINS). In order to quantitatively study the influence of ring laser gyro’s random walk on SINS,an error formula is derived with a mathematical method. Simulation has been done according to the given flight trajectory and the given factor of ring laser gyro’s random walk.The simulation results are analyzed.