基于机械抖动激光陀螺仪的动态误差分析

Dynamic Error Analysis Based on the Dithered Laser Gyro

关键词:  捷联惯导系统  机抖激光陀螺  动态误差  建模

Key words:  SINS  Mechanically dithered ring laser gyro  Dynamic error  Modeling

摘要:

机抖激光陀螺仪是目前应用最为广泛的激光陀螺,是实现应用捷联惯导系统进行导航的理想惯性仪表,研究激光陀螺仪的误差因素,并通过软件进行补偿提高其精度,对提高捷联惯导系统的精度具有重要意义。相对于研究已经较为成熟的静态误差,对动态误差的研究仍较少。针对激光陀螺的动态误差,通过分析在动态环境中抖动机构的输出对二频机抖激光陀螺输出的影响,建立了动态误差模型,为激光陀螺动态误差的研究提供了理论储备,具有一定的工程应用价值。

Abstract:

Mechanically dithered ring laser gyroscope, which is most widely used, is the ideal component for strapdown inertial navigation system, thus the research and compensation of laser gyroscope error factors by the software are of great significance for improving the precision of the strapdown inertial navigation systemCompared to static error, the study of dynamic error is still inadequate worldwideFor the dynamic errors of laser gyro, the influence of dithering mechanism output on the mechanically dithered ring laser gyro output in the dynamic environment is analyzed, and the dynamic error model of ring laser gyro is set upThe research finding provides a good reference for the study of the dynamic error of laser gyro and has certain engineering application value.