旋转式光纤陀螺惯导系统随机误差抑制技术  

Random error suppression technology of rotating FOG inertial navigation system

作　　者：周斌[1] 王巍[2] 何小飞[2] 

机构地区：[1]北京航空航天大学仪器科学与光电工程学院,北京100191 [2]北京航天控制仪器研究所,北京100854

出　　处：《北京航空航天大学学报》2013年第9期1203-1207,共5页Journal of Beijing University of Aeronautics and Astronautics

基　　金：总装预研资助项目(51309030103)

摘　　要：采用旋转调制技术能够有效降低陀螺常值漂移和加速度计常值零偏对导航系统精度的影响,但其对陀螺随机漂移和噪声几乎没有抑制作用.惯导系统在随机干扰的作用下输出误差将发散,影响系统长时间的导航定位能力.通过对抑制随机干扰误差的阻尼技术进行研究,提出一种具有阻尼特性的旋转式光纤陀螺惯导系统,利用阻尼技术抑制随机干扰对导航系统精度的影响.从仿真结果可以看出,具有阻尼特性的单轴旋转光纤陀螺惯导系统精度提高1倍以上.当系统采用更高精度的惯性仪表时,随机误差的阻尼抑制效果将更明显.The impact of the gyro constant drift and accelerometer constant bias to the inertial navigation system （INS） can be reduced by rotation modulation technology, but the gyro random drift and noise can not be inhibited. The errors of INS will divergence under action of random disturbances, which affects the long- term ability to navigate. The damping technology to inhibit random error interference was concerned, and a damping rotating fiber optic gyro （FOG） inertial navigation system was presented. Using the damping technol- ogy the affect of random noise to navigation system accuracy was suppressed. Simulation results show that the single axis rotating FOG inertial navigation system precision is improved by more than one times with damping technology. When higher precision instrument is adopted, it will be more obvious for suppress effect of random error.

关 键 词：光纤陀螺 随机误差 旋转式惯导系统 阻尼技术 控制方程 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]