载体角运动对旋转捷联惯导误差的影响分析

Influence of Carrier Angular Movement on Navigation Error for Rotating Strapdown Inertial Navigation System

摘要:

旋转捷联惯导系统采用旋转调制误差补偿技术对陀螺仪和加速度计误差进行调制,可以提高系统导航精度。在简要分析旋转调制误差补偿机理基础上,研究了单轴旋转方案中载体常值旋转和周期旋转2种角运动模式对导航误差的影响。结果表明:载体特定角运动对旋转捷联惯导的误差补偿效果有一定影响,且单轴正反转停方案中误差补偿效果所受影响相对较小。

Abstract:

Rotating strapdown inertial navigation system (RSINS) could modulate the gyro and accelerometer error with error rotating compensation method to improve the precision. The error model of the SINS and the mechanism of the error rotating compensation were analyzed. With respect to the single-axial rotating scheme, the influence of the carrier two angular movement models on the navigation precision was investigated. The result showed that the specifically angular movement had large influence on the error compensation results, and the single-axial obverse-reverse-pause rotating scheme had much slighter influence than the continuous rotating scheme.