WANG Ting-jun, GAO Yan-bin, LI Guang-chun. Compensation technology of angular acceleration error for FOG SINS[J]. 2012, 31(5): 76-78+84. DOI: 10.13873/j.1000-97872012.05.001.
光纤捷联惯导系统角加速度误差补偿技术
摘要
以实验室自行研制的光纤陀螺及其捷联惯导系统为基础
从光纤陀螺的传统标定模型入手
在进行角加速度补偿前
通过与转台激发出的角速度与光纤陀螺测量值做对比
得出系统在有大角加速度的情况下
光纤陀螺测量值与转台实际角速度值会有很大的误差
光纤捷联惯导系统姿态误差会在很短的时间内被放大。角加速度误差补偿后
在有明显角加速度的情况下
光纤陀螺能够准确测量转台的角加速度
捷联惯导系统解算精度明显提高。
Abstract
On the basis of fiber optic gyroscope(FOG)and strapdown inertial navigation system(SINS)
the study starts with traditional calibration model of FOG
comparing angular rate by FOG measurement with angular rate inspired by turntable
it discoveres that there is very large error of angular rate by FOG measurement in the condition of large angular acceleration
and attitude error of SINS is amplified in very short time.After angular acceleration error compensation
FOG can measure angular rate of turntable accurately under the large angular acceleration.The attitude precision of FOG SINS is distinctly improved.